Directory of Researchers

SUZUKI Takeshi
Graduate School of Agricultural Science / Department of Agrobioscience
Assistant Professor
Agricultural Chemistry
Last Updated :2023/12/12

Researcher Profile and Settings

Affiliation

  • <Faculty / Graduate School / Others>

    Graduate School of Agricultural Science / Department of Agrobioscience
  • <Related Faculty / Graduate School / Others>

    Faculty of Agriculture / Department of Agrobioscience

Teaching

Research Activities

Research Areas

  • Environmental science/Agricultural science / Environmental agriculture

Committee Memberships

  • 日本土壌肥料学会, 土壌教育委員会委員

Awards

  • Oct. 2018 5th Global Summit and Expo on Pollutin Control(conference series llc ltd), Best poster award (5th Global Summit and Expo on Pollutin Control), Improvement of heavy metal phytoextraction by application of metal chelators and plant growth regulators

    茶谷友貴, 鈴木武志, 藤嶽暢英

    International society

Published Papers

  • 山本 佳奈, 鈴木 武志, 前田 瑞晴, 宇都 祐治, 木田 森丸, 藤嶽 暢英

    一般社団法人 日本土壌肥料学会, 05 Sep. 2022, 日本土壌肥料学会講演要旨集, 68, 101 - 101, Japanese

  • 阪上 詩織, 壷田 紘花, 木田 森丸, 鈴木 武志, 藤嶽 暢英

    一般社団法人 日本土壌肥料学会, 05 Sep. 2022, 日本土壌肥料学会講演要旨集, 68, 11 - 11, Japanese

  • 渡邉 幹, 鈴木 武志, 木田 森丸, 藤嶽 暢英

    一般社団法人 日本土壌肥料学会, 05 Sep. 2022, 日本土壌肥料学会講演要旨集, 68, 116 - 116, Japanese

  • Shuji Ueda, Yasuharu Takashima, Yunosuke Gotou, Ryo Sasaki, Rio Nakabayashi, Takeshi Suzuki, Shinji Sasazaki, Ituko Fukuda, Biniam Kebede, Yuki Kadowaki, Maiko Tamura, Hiroki Nakanishi, Yasuhito Shirai

    Japanese Black cattle (Japanese Wagyu) beef is attracting attention for its aroma and marbling, and its handling is increasing worldwide. Here, we focused on the origin discrimination of Wagyu beef and analyzed the nutritional components of Japanese Wagyu (produced in multiple prefectures of Japan), Hybrid Wagyu (a cross between Angus and Wagyu cattle born in Australia and transported to Japan), and Australian Wagyu beef using mass spectrometry (MS). Triple-quadrupole liquid chromatography-MS was used to clarify the molecular species of lipids in Wagyu beef. Fourteen classes of lipids were separated, and 128 different triacylglycerides (TGs) were detected. A simple comparative analysis of these TGs using high-performance liquid chromatography revealed significantly higher levels of triolein (C18:1/C18:1/C18:1; abbreviated OOO) and C18:1/C18:1/C16:1 (OOPo) in Japanese Wagyu. Wagyu elements beef were comprehensively analyzed using inductively coupled plasma (ICP)-MS and ICP-optical emission spectrometry. We found significant differences in the rubidium, cesium, and lithium levels of Japanese and Australian Wagyu beef. On comparing metabolites using gas chromatography-MS, we identified significant differences in the levels of amino acids and other components of the Japanese and Australian Wagyu beef. These results suggest the possibility of determining the origin of Wagyu cattle breeds using MS and genetic discrimination.

    23 Aug. 2022, Metabolites, 12 (9), English, International magazine

    Scientific journal

  • Miho Ohnishi, Riu Furutani, Takayuki Sohtome, Takeshi Suzuki, Shinya Wada, Soma Tanaka, Kentaro Ifuku, Daisei Ueno, Chikahiro Miyake

    In response to decreases in the assimilation efficiency of CO2, plants oxidize the reaction center chlorophyll (P700) of photosystem I (PSI) to suppress reactive oxygen species (ROS) production. In hydro-cultured sunflower leaves experiencing essential mineral deficiencies, we analyzed the following parameters that characterize PSI and PSII: (1) the reduction-oxidation states of P700 [Y(I), Y(NA), and Y(ND)]; (2) the relative electron flux in PSII [Y(II)]; (3) the reduction state of the primary electron acceptor in PSII, QA (1 - qL); and (4) the non-photochemical quenching of chlorophyll fluorescence (NPQ). Deficiency treatments for the minerals N, P, Mn, Mg, S, and Zn decreased Y(II) with an increase in the oxidized P700 [Y(ND)], while deficiencies for the minerals K, Fe, Ca, B, and Mo decreased Y(II) without an increase in Y(ND). During the induction of photosynthesis, the above parameters showed specific responses to each mineral. That is, we could diagnose the mineral deficiency and identify which mineral affected the photosynthesis parameters.

    23 Jun. 2021, Antioxidants (Basel, Switzerland), 10 (7), English, International magazine

    Scientific journal

  • Yumina Tanazawa, Mitsutoshi Tomotsune, Takeshi Suzuki, Hiroshi Koizumi, Shinpei Yoshitake

    Amendment by biochar made by thermal degradation of biomass is expected to enhance carbon sequestration through stimulating carbon assimilation by plants. We clarified the effect of biochar amendment on the photosynthesis of trees in forest ecosystems. Biochar was applied to young oak trees (Quercus serrata) in temperate deciduous forest at rates of 0, 5, 10 and 20 Mg ha−1 in four plots (C0, C5, C10, and C20). The variation in photosynthetic parameters (the maximum photosynthetic rate: Pmax, maximum carboxylation rate: Vcmax and the potential rate of electron transport: Jmax) and leaf traits (the stomatal conductance: gc, leaf mass per area (LMA) and leaf nutrient concentrations) were examined every month during the growing seasons for 3 years. Pmax generally increased in C5 and C10 and did not increase in C20. Similarly, Vcmax and Jmax increased in C5 and C10 and correlated significantly positively with Pmax, suggesting that biochar amendment basically increased the photosynthetic rate through improvements in physiological activities but that there was a maximum useful dosage. We also found that gc, LMA and leaf nutrient (N, Mg, and S) showed significant positive correlations with Pmax, indicating that an increase in photosynthetic rates would be supported by these leaf traits. However, stimulation of photosynthesis became smaller year by year, indicating that the effects of biochar amendment faded gradually. We concluded that biochar amendment basically improved the photosynthesis of oak trees in the forest through the change of all gc, LMA and leaf nutrient concentrations but declined yearly.

    2021, Journal of Forest Research, 26 (2), 116 - 126

    Scientific journal

  • 渡邉 育弥, 芦田 均, 木田 森丸, 鈴木 武志, 藤嶽 暢英

    一般社団法人 日本土壌肥料学会, 01 Sep. 2020, 日本土壌肥料学会講演要旨集, 66, 15 - 15, Japanese

  • Huiqiao Wu, Morimaru Kida, Akiko Domoto, Masayuki Hara, Hitoshi Ashida, Takeshi Suzuki, Nobuhide Fujitake

    We investigated a series of long-term soil samples (1976-2015) collected from a paddy field that underwent a conversion of cropping systems from double cropping to single cropping in 1991, with consistently different fertilization treatments. The fertilization treatments include (i) chemical fertilizer, (ii) chemical fertilizer + rice straw, (iii) chemical fertilizer + cattle manure compost, and (iv) chemical fertilizer + rice straw + fused phosphate + calcium silicate. We extracted dissolved organic matter (DOM) from the soil samples and analyzed it for the concentration of humic substances as well as for optical properties using ultraviolet-visible and excitation-emission matrix (EEM) spectroscopy. Different fertilization treatments did not significantly (P > 0.05) affect DOM and humic substance concentrations, while the soil total carbon (TC) content and DOM concentration consistently increased in the double cropping system and decreased in the single cropping system. The DOM/TC ratio, which is an indicator of the proportion of the labile fraction in TC pool, also showed a similar pattern. These results indicate that cropping systems had a larger effect on DOM concentration than the fertilization treatments. Five fluorescent components identified by parallel factor analysis of EEMs (three humic-like and two protein-like components) showed significant differences in the relative abundances under the different fertilization treatments. The manure compost application resulted in a higher tyrosine-like component relative abundance than the other chemical fertilizer applications. Overall, fertilization affected the DOM composition, while the cropping systems impacted both the concentration and spectroscopic property of paddy soil DOM.

    TAYLOR & FRANCIS LTD, Nov. 2019, SOIL SCIENCE AND PLANT NUTRITION, 65 (6), 557 - 565, English

    Scientific journal

  • Effect of biochar addition on leaf-litter decomposition at soil surface during three years in a warm-temperate secondary deciduous forest, Japan.

    Yukiya Minamino, Nobuhide Fujitake, Takeshi Suzuki, Shinpei Yoshitake, Hiroshi Koizumi, Mitsutoshi Tomotsune

    Nov. 2019, Scientific Reports, 9, 16961, English

    [Refereed]

    Scientific journal

  • HAN BEIBEI, KITAMURA KYOKO, HIROTA MITSURU, SHEN HAIHUA, TAN YANHONG, SUZUKI TAKESHI, FUJITAKE NOBUHIDE

    The characteristics of humus composition are important for understanding the mechanism of carbon storage in the Qinghai–Tibet Plateau. The aim of this study was to characterize the quality of soil organic matter (SOM) in this region. Soil samples from four soil profiles in fenced study sites in the alpine grassland were collected at altitudes of 4200, 4000, 3800, and 3400 m, along the southwest facing slope in the Qilian Mountains. The humus composition and humification degree of the humic acid (HA) were determined by two methods: (1) extraction with 0.5% sodium hydroxide (NaOH) followed by 0.1 M sodium pyrophosphate (Na 4 P 2 O 7 ) (OH-PP method); and (2) treating once with 0.1 M hydrochloric acid (HCl) followed by extracting with 0.5% NaOH (Cl-OH method). Physico-chemical analysis revealed higher exchangeable cation content and higher base saturation ratios could be related to slightly acidic to neutral soils, which could be regarded as calcium (Ca)-rich soils. The amounts of combined-form HAs obtained by HCl pretreatment (HA Cl –HA OH ; ∆HA Cl ) were remarkably higher than those extracted with Na 4 P 2 O 7 (HA PP ), indicating that the combined form of HAs is mainly Ca. In addition, the proportion of HA PP in the total HAs extracted with both NaOH and Na 4 P 2 O 7 (HA OH + HA PP ) obtained in the OH-PP method increased with soil depth and decreasing elevation, indicating that HAs associated with aluminum (Al) and iron (Fe) were distinguished in the subsoils of lower elevation. Therefore, the formation of the organo-mineral complex may contribute to stabilizing SOM in the Qinghai–Tibet Plateau. Moreover, Type A-HA with the highest degree of humification was obtained from the deeper horizons with the Cl-OH method and almost all horizons by extraction with Na 4 P 2 O 7 in the OH-PP method. Further studies using various spectroscopic analyses are necessary to elucidate the chemical properties of SOM in this region.

    Taylor and Francis, Jan. 2019, SOIL SCIENCE AND PLANT NUTRITION, 65 (1), 11 - 19, English

    [Refereed]

    Scientific journal

  • Satoru Hobara, Shoko Fukunaga-Yoshida, Takeshi Suzuki, Shingo Matsumoto, Toru Matoh, Noriharu Ae

    Aluminum (Al) minerals form a strong complex with organic matter (OM) in soil, affecting the stability and degradability of OM and carbon (C) dynamics in soil. However, plant effects on the accumulation of Al minerals (particularly Al hydroxide minerals) that are not crystallized and actually or potentially associated with OM (active Al minerals) in soil have received little attention. Al also interacts with silicon (Si) in soil to form aluminosilicate minerals, and plants remove Si from soil through Si uptake. Plant Si uptake may thus lead to an increase in active Al minerals in soil because of a reduced influence of Si in soil and the resulting reduced formation of aluminosilicate minerals. To test whether plant Si uptake changes active Al minerals in root-zone soil, we performed two cultivation experiments using plants varying in Si uptake and compared changes in soil mineral indices during cultivation, including soil extractable Al concentrations in root-zone soils. In the first experiment, using five plant species varying in Si uptake, plant species with greater Si uptake, in particular grass species, showed higher pH (NaF) and CuCl2-extractable Al in their root-zone soils, suggesting that plant Si uptake increases the amount of active Al in soil. This suggestion was supported by the second experiment, using two types of rice (Oryza sativa), a wild type and a mutant defective for a Si transporter. The results showed that pH (NaF) and extractable Al in root-zone soil decreased under the low-Si-uptake mutant, especially in the vicinity of their roots. These observations suggest that Si uptake by plant roots leads to an increase in active Al minerals, possibly enhancing OM retention and C accumulation in root-zone soil and may partly explain why grassland soils are often rich in C.

    01 Oct. 2016, Geoderma, 279, 45 - 52

    Scientific journal

  • Morimaru Kida, Toshiyuki Ohtsuka, Taku Kato, Takeshi Suzuki, Nobuhide Fujitake

    nonionic macroporous resin, Amberlite (R) XAD-8, or its substitute, Supelite (TM) DAX-8, is used when isolating or quantifying aquatic humic substances (AHS). However, the effect of salinity on the adsorption behavior of AHS onto the resin is yet to be confirmed, rendering the possibility of salinity-induced changes in the values of quantified amounts or characteristics of AHS obtained from a salty system. To verify the results of quantification and isolation of AHS using the resin in different salinity systems, the effect of salinity on such quantitative analyses of AHS has been examined. It has been concluded that the salinity effect is in general trivial and will not hinder comparison of results regardless of sample solution salinity. (C) 2015 Elsevier Ltd. All rights reserved.

    PERGAMON-ELSEVIER SCIENCE LTD, Mar. 2016, CHEMOSPHERE, 146, 129 - 132, English

    [Refereed]

    Scientific journal

  • Effect of Different Exposure Conditions on Degradation Characteristics of Biodegradable Resin Mortar

    Suzuki, M, Kubo, K, Suzuki, T, Sawada, Y, Kawabata, T

    公益社団法人農業農村工学会, Apr. 2015, JIDRE Journal, I_19 - I_24, English

    [Refereed]

    Scientific journal

  • Effect of Different Exposure Conditions on Mechanical Properties of Biodegradable Resin Concrete

    Suzuki, M, Kubo, K, Suzuki, T, Sawada, Y, Kawabata, T

    公益社団法人農業農村工学会, Apr. 2015, IDRE Journal, I_19 - I_24, English

    [Refereed]

    Scientific journal

  • 鈴木麻里子, 鈴木武志, 河端俊典

    コンクリート工学会, Jul. 2014, Concrete Reseach and Technology, Vol.25, 119 - 124, Japanese

    [Refereed]

    Scientific journal

  • SUZUKI MARIKO, KUBO KYOKO, SUZUKI TAKESHI, KAWABATA TOSHINORI

    2014, コンクリート工学論文集(Web), 25, 119-124 (J-STAGE), Japanese

  • Michio Kanechi, Shinya Fujiwara, Naoki Shintani, Takeshi Suzuki, Yuichi Uno

    Rooftop gardening (or green roof establishment) is an urban greening afforestation method that has many environmental, economic, and urban landscaping benefits. For rooftop vegetation, stressful environments that include heat, strong winds, sunshine, and drought prevent many plants from growing well, especially in shallow soil. To establish low cost urban rooftop gardens with a low weight substrate in the summer, we evaluated the green coverage and growth of a suitable groundcover ornamental plant, blue daze (Evolvulus pilosus). Blue daze was used as rooftop vegetation in a shallow substrate (10 cm thick) on the flat rooftop of a four-story building in the middle of Kobe city, Japan, which has a temperate and humid climate. On average, the diurnal maximum temperatures and the total amounts of precipitation during each planting experiment between July and September were 30.8 degrees C and 247 mm in 2008 and 33.2 degrees C and 458 mm in 2009, respectively. Three different types of planting substrates (AS, amended soil, TM, turf mat as a dried-up blocks of sod, and FBA, furnace bottom ash) were tested to determine how they influenced plant cover, flowering, and growth. We evaluated the physical and chemical properties of the substrates that were used to establish the rooftop greeneries. In addition, the economy, ornamental and ecological values, reuse of material, and low rooftop weight burdens of the substrates were evaluated. The greatest blue daze ground cover occurred on the TM substrate (relative to the AS and FBA substrates) approximately three months after transplanting. The blue daze actively bloomed on all substrates throughout midsummer. However, alternate day irrigation largely reduced their shoot growth and flowering relative to daily irrigation. The AS and TM substrates had suitable physicochemical properties for use as planting substrates and had ideal solid, liquid, and vapor phase distributions and high water and nutrient holding capacities. FBA was a poor substrate with very low water and nutrient retention capacities, which resulted in depressed plant growth, especially under low watering conditions. To recycle FBA efficiently as a shallow low-cost planting substrate for rooftop gardening, the addition of coated fertilizers and organic matter to FBA should be considered to improve its water and nutrient holding capacities. (C) 2013 Elsevier GmbH. All rights reserved.

    ELSEVIER GMBH, URBAN & FISCHER VERLAG, 2014, URBAN FORESTRY & URBAN GREENING, 13 (1), 184 - 191, English

    [Refereed]

    Scientific journal

  • Deposited muddy soil reuse technique using industrial waste for reconstruction of small earth fill dams

    Mariko Suzuki, Toshinori Kawabata, Kazunori Uchida, Takeshi Suzuki

    Some problems are encountered when old small earth fill dams are reconstructed in Japan. For example, tons of muddy soil is deposited on the bottom of a pond, and it is difficult to remove muddy soil because of the high water content. Furthermore expensive soil for the impermeable core zone has to be prepared because of a lack of suitable soil materials at the dam sites. In this paper, we proposed the creation of the soil for using muddy soil deposited on the bottom of a pond; old dam body's material of fine-grain fraction lack, fly ash and quicklime, and it was found that improved soil was satisfied with standard value of strength and permeability. It was concluded that this method which using waste material could use as soil for impermeable core zone. Copyright © 2012 by the International Society of Offshore and Polar Engineers (ISOPE).

    2012, Proceedings of the International Offshore and Polar Engineering Conference, 832 - 835

    International conference proceedings

  • Qing-xia Dai, Noriharu Ae, Takeshi Suzuki, Mani Rajkumar, Shoko Fukunaga, Nobuhide Fujitake

    A five-step sequential extraction procedure was developed for the partitioning of soil aluminum (Al) into five fractions: exchangeable, weakly organic bound, strongly organic bound, inorganic non-crystalline and crystalline. The results obtained by the sequential extraction method for Al were compared with those estimated from single extractions using identical operating conditions applied in each individual sequential fraction. The Al content in the extracts was measured by inductively coupled plasma optical emission spectrometry. The results indicated that the first four steps [potassium chloride (KCl), copper chloride (CuCl(2)), sodium pyrophosphate (Na(4)P(2)O(7)), acid ammonium oxalate ((NH(4))(2)C(2)O(4))] in the sequential procedure could be as effective as single extraction methods at estimating exchangeable Al, weakly organic bound Al, strongly organic bound Al, and non-crystalline Al. However, the crystalline Al content by sequential procedure was not in agreement with single extraction procedures. Further, the sequential extractions resulted in more consistent estimates of the aluminum/silicon (Al/Si) molar ratio and allophane and crystalline Al contents than single extractions method. Results of X-ray diffraction on the soil samples confirm the presence of appreciable amounts of at least three types of crystalline minerals, including gibbsite, vermiculite or halloysite. Our result implies that the sequential method can be more reliable in estimating the various Al forms in Andisols.

    WILEY-BLACKWELL, Aug. 2011, SOIL SCIENCE AND PLANT NUTRITION, 57 (4), 500 - 507, English

    [Refereed]

    Scientific journal

  • Kawabata Toshinori, Suzuki Mariko, Uchida Kazunori, Suzuki Takeshi

    Japan has 210,000 earth-fill dams and many of them are located in the Hyogo prefecture. They have distinct zones of dissimilar material, a watertight clay core. The suitable soil materials of impermeable core zone are very important; nevertheless it is difficult for us to secure them near the dam site. It becomes expensive to reconstruct an old earth-fill dam, because the suitable soil materials have to be borrowed in from some distance. In addition, these earth-fill dams have large deposit of muddy soil in the reservoir. Such muddy soil reduced the volume of water kept in the reservoir and declined the quality of water. Though the muddy soil have to be removed, it is not easy to dispose it because of the high moisture content. In this paper, we proposed the using of the soil for impermeable core zone, using materials that should be recycled. It is necessary to be said that the material is not only low cost but also mechanically stable and environmentally friendly. Therefore, we made decision regarding the best mixture proportion based on the results of unconfined compression, and permeability tests.

    IOS PRESS, 2011, DEFORMATION CHARACTERISTICS OF GEOMATERIALS, PTS 1 AND 2, 762 - 765, English

    [Refereed]

    International conference proceedings

  • Creation of the soil for impermeable core zone for earth-fill dams

    Toshinori Kawabata, Mariko Suzuki, Takeshi Suzuki, Kazunori Uchida

    Many earth-fill dams are vulnerable to the disasters, such as earthquakes and typhoons, because they were constructed long time ago. Therefore, prompt reconstructions on these aging dams are required. In the reconstruction, the soil materials for impermeable core zone are required. However, expensive soil for the core zone has to be prepared because of a lack of suitable soil materials at the dam sites. In this paper, we proposed the creation of the soil for impermeable core zone that is made of muddy soil obtained from the bottom of pond, the granulated blast furnace slag, the old banking material, fly ash and quicklime. The zone has to be mechanically stable and low price. As a result, it was found that the specimen made with this method satisfied the standard of strength and permeability that were determined by previous research. It was concluded that this soil created from the waste material could be a replacement for the impermeable core zone. Copyright © 2010 by The International Society of Offshore and Polar Engineers (ISOPE).

    2010, Proceedings of the International Offshore and Polar Engineering Conference, 2, 462 - 466

    International conference proceedings

  • The effect of use of coal clinker ash as revegetation substrate on revegetation woody plants

    SUZUKI Takeshi, SAKA Fumihiko, WATANABE Kunio, IKUMI Yoshio, FUJITAKE Nobuhide, OTSUKA Hiroo

    2009, Journal of the Japanese Society of Revegetation Technology, 35, 325 - 331, Japanese

    [Refereed]

    Scientific journal

  • SUZUKI Takeshi

    Japanese Society of Soil Science and Plant Nutrition, 2008, Japanese Journal of Soil Science and Plant Nutrition, 79 (2), 238 - 238, Japanese

  • Tsujimoto Ryota, NOAMI Yoshino, IKUMI Yoshio, SUZUKI TAKESHI, AE Noriharu

    "Heatphos method" is a technology to recycle phosphorus by adding calcium to heated sewage sludge. In this study, two calcium-rich phosphorus materials air dried or roasted at 700℃ were used as phosphorus fertilizers. These two phosphorus materials were named dried recycled calcium phosphate (dRCP) and roasted recycled calcium phosphate (rRCP), respectively. The monomial efficiencies of dRCP and rRCP were compared with that of single superphosphate (SSP) by the following. 1) The effect of each added phosphorus fertilizer (SSP, dRCP, rRCP) on phosphorus availability on five soil types. 2) The response of three crops [maize (Zea mays L.), soybean (Glycin max L. Merr.), and groundnut (Arachis hypogaea L.)] grown in pots to the three phosphorus fertilizers. 3) Phosphorus adsorptions on the five soil types incubated for six months as evaluated from the three phosphorus fertilizers. Available P measurements show no significant difference among the three fertilizers on Red soil, Gray Lowland soil, Andosol or Non-allophanic Andosol, but the available P of Terrestrial Regosol (pH 8.2) showed that both dRCP and rRCP were inferior to SSP. The effect of dRCP on P uptake by maize was found to be equal to or better than that of SSP in Andosol and Red soil (pH 5.9 and 4.7, respectively) ; however, those of dRCP and especially rRCP were much lower than SSP in the Terrestrial Regosol (pH 8.2). These results indicated that the effect of RCPs may be affected by soil pH. dRCP showed high efficiency in relatively low pH soils ; this result suggests that it is possible to use dRCP as P fertilizer as well as SSP at low pH soil. However, rRCP was less soluble than the other two P sources (SSP and dRCP) because the roasting procedure may develop the crystallinity of calcium phosphate. In Non-allophanic Andosol and Red soil, the influence of incubation on P uptake by crops was different from expectation from P absorption coefficient of soil. It may be necessary to develop a new evaluation method for P adsorption in soil.

    日本土壌肥料学会, May 2007, 日本土壌肥料学会誌, 78 (3), 245 - 252, Japanese

    [Refereed]

    Scientific journal

  • Daichi Asakawa, Hidemasa Mochizuki, Yukiko Yanagi, Takeshi Suzuki, Seiya Nagao, Nobuhide Fujitake

    Aug. 2006, Humic Substances Research, 3, 1 - 10, English

    [Refereed]

    Scientific journal

  • Nazmul A. Khan, Nobuhide Fujitake, Yukio Noda, Takeshi Suzuki, Hiroo Otsuka

    To clarify the formation condition of Type A humic acids (HAs) from plant residues and to contribute to reducing CO, emission, three plant residues were incubated for 0, 25, 50, 100 and 160 days with fresh volcanic ash and water at 90 degrees C to produce humic acid like substances (HALS). The HALS of all incubation samples showed a decrease in log (A(400)/A(600)) values and an increase in A(600)/C values with increasing incubation time. When HALS were classified, only rice straw HALS of 160 days (RS160) belonged to Type A, whereas broad leaf HALS of 160 days (BL160) and Japanese cedar sawdust HALS of 160 days (JCSD160) belonged to Type B. For elemental and nuclear magnetic resonance (NMR) analysis, the HALS samples were prepared according to the International Humic Substances Society (IHSS) method. Data from the elemental composition of all HALS showed high contents (45.98 to 56.55) of carbon (C), low (3.19 to 5.16) hydrogen (H), and low (0.33 to 2.36) nitrogen (N). Carbon content increased in RS and BL, and increased or fluctuated to some extent in the JCSD, whereas H and N contents decreased in all samples as incubation progressed. The H/C and O/C ratios showed a marked decrease, simultaneously the O/H ratio increased, with increased incubation days. These results suggested that oxidation occurred in the incubation system. Although some HALS samples (RS160 and BL160) appeared in the Type A region in both H/C versus O/C and H/C versus O/H diagrams. HALS plotted in the figures of log (A(400)/A(600)) versus A(600)/C, H/C versus O/C and H/C versus O/H diagrams were generally placed out of the area of natural soil HAs. In the case of 1H NMR, the spectral shape of RS, BL and JCSD differed from that of natural soil HAs. Only the 1H NMR spectrum of RS160 was similar to that of Type A soil HA. Changes in the composition of proton species in HALS showed that percentages of aromatic protons (H-ar) increased with increasing incubation. Spectra obtained using C-13 NMR revealed that RS and BL HALS were different from natural soil HAs, whereas RS160 was similar to Type A HA spectra. In the spectra of RS HALS, the signal intensities of carbohydrate C (approximately 74 and 105 p.p.m.) and methoxyl C (approximately 56 p.p.m.) decreased gradually as incubation time progressed, while carboxylic C (approximately 175 p.p.m.) increased. Simultaneously other distinct signals became broad and overlapped each other. As a result, the changes in RS HALS spectra suggested that progress in the modification of lignin and the oxidative degradation of polysaccharide structure, and the spectrum of RS160 became similar to the spectra of Type A HAs. Although the only signal resulting from phenolic C (approximately 150 p.p.m.) still appeared in RS160, the signal intensity decreased and became broader and weaker from RS0 to RS160 with incubation time. Therefore, it was concluded that RS HALS might form a completely similar spectra to the spectra of natural Type A HAs with longer incubation time.

    BLACKWELL PUBLISHING, Jun. 2006, SOIL SCIENCE AND PLANT NUTRITION, 52 (3), 349 - 360, English

    [Refereed]

    Scientific journal

  • Daichi Asakawa, Hidemasa Mochizuki, Yukiko Yanagi, Takeshi Suzuki, Seiya Nagao, Nobuhide Fujitake

    The chemical composition of the hydrophobic acid fraction, which is adsorbed to XAD-8 resin at low pH and desorbed with high pH solution, of water-extractable organic matter in soil probably influences its environmental role and, therefore, it is important to recognize the differences in its chemical composition with season and soil horizon. Hydrophobic acid fractions were collected seasonally in 2004 from Oi, Oe/Oa, A and B horizons of Cambisol and were investigated using elemental analysis, high-performance size exclusion chromatography and ^1H nuclear magnetic resonance (NMR) spectroscopy. Atomic ratios of H/C and O/C decreased with increasing soil depth in winter and summer, suggesting that the hydrophobic acid fraction from lower mineral horizons had lower saturated bond content and carbohydrate content than the fractions from upper organic horizons. Based on high-performance size exclusion chromatography, the molecular weight at peak maximum of the hydrophobic acid fraction decreased significantly with increasing soil depth. The ^1H NMR spectra of the hydrophobic acid fraction showed remarkable changes. The signal intensities of carbohydrate protons (δ 3.0-4.3 p.p.m.) in the hydrophobic acid fraction from organic horizons decreased from winter to summer and increased in autumn, while the signal of aliphatic protons (δ 0-3.0 p.p.m.) increased and decreased. In all seasons of the year, the signal intensities of carbohydrate protons were greater in organic horizons and decreased significantly with depth in mineral soil, but the signal for aliphatic protons increased. Our results demonstrate that season and soil depth influence the chemical composition of the hydrophobic acid fraction of water-extractable organic matter.

    Japanese Society of Soil Science and Plant Nutrition, Jun. 2006, Soil Science and Plant Nutrition, 52 (3), 361 - 370, English

    [Refereed]

    Scientific journal

  • Determining the geographic origin of "Tanbaguro" black coated soybeans (Glycine max) based on their inorganic elemental composition

    Hideki Kosaka, Tomoko Hatanaka, Takeshi Suzuki, Toshio Sugimoto, Isao Hikino, Tadanao Suzuki, Toshiya Toda

    "Tanbaguro" is a local variety of Japanese soybean (Glycine max) that is characterized by large seed size and a black seed coat. We intended to determine a method for determining the geographic origin of Tanbaguro seeds by their inorganic element composition. Seed samples of 48 Tanbaguro varieties and eight "non-Tanbaguro" black soybean varieties cultivated in different years were collected in Japan and China. Eight inorganic elements (Al, Mn, Fe, Ni, Cu, Zn, Sr and Ba) of these samples were estimated using ICP-AES (Inductively coupled plasma atomic emission spectrometer). Significant differences were observed between Japanese and Chinese samples in the contents of four elements (Al, Fe, Cu and Sr). Principal component analysis samples could generally be divided into two groups : those cultivated in Japan and those cultivated in China. Various combinations of inorganic elemental contents were used to perform the linear discriminant analysis (LDA). LDA performed by eight elements classified with a confidence of 96%, and country of origin could be predicted with confidence of 100%. Even when four elements (Al, Mn, Sr and Ba) were used, it was possible to distinguish whether the country of cultivation was Japan or China. LIDA performed by Al and Fe contents, selected by stepwise discriminant analysis, classified and predicted with a confidence of only 89% and 79%. However, since all samples cultivated in China could be correctly classified and predicted, this discriminant model was useful for the screening of samples. Therefore, the applicability of this method for determining the geographic origin of Tanbaguro bean varieties was demonstrated.

    JAPAN SOC FOOD SCIENCE TECHNOLOGY, 2006, JOURNAL OF THE JAPANESE SOCIETY FOR FOOD SCIENCE AND TECHNOLOGY-NIPPON SHOKUHIN KAGAKU KOGAKU KAISHI, 53 (6), 344 - 353, Japanese

    [Refereed]

    Scientific journal

  • Effect of Fe, Mn or Al compounds on humification of three types of plant residues during thermal incubation

    SA Bulosan-Atendido, T Suzuki, N Fujitake, H Otsuka

    The effect of three inorganic minerals on the humification of three types of plant residues was determined by employing a model thermal incubation experiment. The plant residues consisiting of rice (Oryza sativa) straw, broadleaf tree (a mixture of oak/beech, Quercus serrata, Q. dentata, Q. acutissima etc.) sawdust and Japanese cedar (Cryptomeria japonica) sawdust were each mixed with Fe, Mn and Al in the form of hydroxides, oxides and sulfates. Humic materials were extracted after incubation and their composition was analyzed using a mixed solution of 0.02 M Na4P2O7 and 0.1 m NaOH. The pH values of the samples after a longer duration of the incubation period were all less than 5.0, with the lowest value of 2.16 for a sample incubated with Al-2(SO4)(3), except for the values of the samples incubated with MnO2, which ranged from 4.75 to 6.0. The Delta logK values decreased with the increase of the duration of the incubation period, whereas the RF values increased, as well as the amount of humus extracted (HE) and percentage of humic acid (PQ). Whereas most of the samples were identified as Type B and Type Rp humic acids, Type A humic acid was formed in all the plant residues incubated with Al-2(SO4)(3), FeO(OH) and MnO2 after <= 180 d of incubation period. Moreover, the degree of humification of the plant residues was observed in the order of broadleaf tree>rice straw>Japanese cedar. It can be concluded that the inorganic compounds Al-2(SO4)(3), FeO(OH) and MnO2 contributed to the acceleration of the humification process of plant residues during the thermal incubation. The effect of Al-2(SO4)(3) may be associated with the increase in the reactivity with other components in the system due to its high solubility, whereas FeO(OH) and MnO2 may be involved in a reduction-oxidation reaction during the incubation. The browning and/or blackening of the plant residues were similar to the production of melanoidin which led us to consider that the mechanism involved in the study was similar to that of the Maillard reaction.

    JAPANESE SOC SOIL SCIENCE PLANT NUTRITION, Dec. 2005, SOIL SCIENCE AND PLANT NUTRITION, 51 (7), 925 - 933, English

    [Refereed]

    Scientific journal

  • Method for estimating the content of the chloroform-extractable green fraction (CEGF) in HCl-DMSO extract of soils

    T Kobayashi, D Asakawa, Y Yanagi, T Suzuki, M Watanabe, H Ohta, N Fujitake

    Chloroform-extractable green fraction (CEGF) was detected in the supernatant obtained by alkali precipitation from the HCl-dimethylsulfoxide (DMSO) extract of Pg-rich soil. In the alkaline solution, the color of CEGF was green and CEGF showed strong Pg-like absorption bands. Ultraviolet and visible (UV-VIS) spectral analysis and gel chromatography on Sephadex G-50 were performed to compare several properties between CEGF and Pg. CEGF, which was purified by gel chromatography on Bio-Beads SX-1, displayed strong absorption bands at 609, 562, 445 and 280 nm in the alkaline solution. These absorption bands were almost similar to those of Pg. Furthermore, the UV-VIS spectrum of CEGF in the organic solvents showed a similar characteristic pattern of 4,9-dihydroxyperylene-3,10-quinone (DHPQ), which was considered to be a chromophore of Pg. Based on the results of gel chromatography on Sephadex G-50, CEGF mainly consisted of two fractions, corresponding to the G(2) and G(3) fractions of Pg. These results indicated that the method for extracting CEGF from Pg-rich soil in the present study was easy and selective and that CEGF was one of the components of, or a closely related substance to Pg. A colorimetric method for the estimation of the CEGF content in soils was developed. The calibration curve of CEGF was linear over a wide range of contents from 2.75 to 220 mg L-1. The CEGF content in twelve samples of various soils was examined. CEGF was detected in all the soil sampled (5 orders) including three samples (3 orders) where Pg was not detected, and the content ranged from 0.07 to 1.66 g kg(-1) (dry soil). Therefore, the method for estimating the CEGF content in soils developed in the present study was found to be suitable for various soil orders and it was assumed that CEGF occurred in various soil orders.

    TAYLOR & FRANCIS LTD, Oct. 2005, SOIL SCIENCE AND PLANT NUTRITION, 51 (6), 779 - 786, English

    [Refereed]

    Scientific journal

  • T Suzuki, Y Ikumi, S Okamoto, Watanabe, I, N Fujitake, H Otsuka

    Swollen chips made from trees felled during clear-cutting were composted with various organic and inorganic materials in an aerobic composting reactor for 5 months and then piled for 5 months. The organic materials included chicken feces, urea, nitrogenous lime (calcium cyanamide, manure), and material rapidly composted from food garbage in 24-h bacterial fermentation, while the inorganic materials were coal ash and volcanic ash. In this paper, we first attempt to estimate the quality and degree of maturity of each compost from its chemical properties. Furthermore, we try to calculate the maturity of the fermented wood chip composts from their mixture ratio of the initial materials by multiple linear regression analysis. We measured changes in the ON ratio, nitrate nitrogen (NO3-N) content, percentage of humic acid in the alkali soluble fraction (PQ),-cation exchange capacity, pH, and EC during the composting period. The degrees of maturity of the composts were estimated via a plant growth test using Chinese cabbage. We found that the CN ratio, NO3-N concentration, and PQ were suitable for estimating the degree of maturity of wood chip composts. For maturity, the CN ratio should be less than 14, the PQ more than 66.2, and the NO3-N concentration more than 853 mg kg(-1). We devised an equation to estimate the degree of maturity after 10 months by a multiple linear regression analysis from the mixing ratio of wood chips and the co-composted materials. From the multiple linear regression analysis, the above three indices of compost maturity could be estimated from the mixing ratio of the initial materials. This equation should enable us to determine the degree of compost maturity after 10 months based on the initial mixing ratio. (C) 2004 Elsevier Ltd. All rights reserved.

    ELSEVIER SCI LTD, Nov. 2004, BIORESOURCE TECHNOLOGY, 95 (2), 121 - 128, English

    Scientific journal

  • 井汲 芳夫, 八幡 有紀, 鈴木 武志, 藤嶽 暢英, 大塚 紘雄

    An attempt to create a soil amendment containing Type A humic acid-like substances was done by means of thermal incubation of a mixture of rice straw (RS) and coal fly ash (CFA). The specific objectives of the study are the following: 1) To make an effective use of CFA, a by-product of coal-fired power stations, and 2) To fix carbon in the soil for a long term period as Type A humic acids which are known to be hard to decompose. Optimal incubation conditions to create Type A humic acid-like substances were examined. Furthermore, the chemical properties of the created samples were analyzed. The results obtained can be summarized as follows: 1) It was found that among the three temperature conditions imposed (60, 75 and 90℃), 90℃ was the most suitable for the progress of humification, and that a water supply was very necessary. 2) Since the humic acid-like substances extracted from the incubated sample showed a high degree of humification at the pH range of 3-4, the increase in the degree of humification of the humic acid-like,substances may be accelerated by maintaining a low pH condition during incubation. 3) The highest RF value was observed in the mixture with a dry weight ratio of 1:1 (CFA:RS) after 180 d incubation at 90℃ with water. The 〓logK and RF values of the humic acid-like substances extracted with the mixed solution (pH 7) of 0.1 mol L^<-1> Na_4P_2O_7 and 0.1 mol L^<-1> H_4P_2O_7 was 0.686 and 94.2 respectively, and these humic acid-like substances corresponded to Type A humic acids. 4) The yields of Type A humic acid-like substances from the incubated mixture of CFA and RS (dry weight ratio of 1:1 and 1:2) were estimated to be at least 13.6% and 14.6% of the carbon contents of the samples at the start of the incubation, respectively. 5) The contents of nutrients, such as nitrogen and phosphorus in the incubated sample were smaller than those reported for other soil amendments such as rice straw compost. Therefore, additional application of nitrogen and phosphate fertilizers would be needed in the actual scene for agronomical application of this soil amendment.

    Japanese Society of Soil Science and Plant Nutrition, 2004, 日本土壌肥料学会誌, 75,641-649 (6), 641 - 649, Japanese

    Scientific journal

  • Humification of three plant residues with Sakurajima volcanic ash as influenced by phosphate addition and low pH condition

    Bulosan-Atendido SA, Suzuki Takeshi, Otsuka H, Fujitake Nobuhide, ISHIBASHI T

    The influence of phosphate addition and low pH condition on humification of three plant residues were determined by performing model thermal incubations of the plant residues rice straw (Oryza sativa), broadleaf sawdust (Kashiwa, Quercus dentate), and coniferous sawdust (Japanese cider, Cryptomeria japonica) with Sakurajima volcanic ash. Four experimental set ups were prepared: (Group 1) plant residues only; (Group 2) plant residues with Sakurajima volcanic ash; (Group 3) plant residues with Sakurajima volcanic ash and Na_2HPO_4; and (Group 4) plant residues with Sakurajima volcanic ash and Na_2HPO_4 with the pH adjusted to 5. Humic acids were extracted using a mixed solution of 0.02 M Na_4P_2O_7 and 0.1 M NaOH. Extractable Fe and Al oxides were determined using three different extraction methods: dithionite-citrate-bicarbonate (DCB), acid-oxalate (TAMM), and Na-pyrophosphate (NaPP). The pH values obtained for Group 1 samples ranged from 2.75 to 6.21; Group 2 samples were from 3.74 to 4.78; Group 3 samples were near neutral or alkaline, ranging from 6.93 to 7.59; and the values for Group 4 samples ranged from 5.38 to 6.28. The ΔlogK values decreased with longer incubation times while the RF values increased. Group 3 samples showed a decrease in RF values compared to Group 2. Type A humic acids were produced only from Group 2 samples derived from rice straw and broad leaf sawdust after about 120 incubation days. The amounts of the Fe and Al from all types of extraction methods decreased in Groups 3 and 4 indicating a possible binding up of these components with phosphate ions. It can be concluded that addition of Na_2HPO_4 increased the pH of the system and at the same time lowers the solubility of Fe and Al present in the Sakurajima volcanic ash. However, adjusting the pH to 5 to maintain lower pH conditions, has slightly increased the solubility of Fe and Al. Therefore, the higher the amount of extractable Fe and Al, the higher the RF values indicating a faster humification process. The relatively small amounts of Fe and Al in higher pH values and their reaction with phosphate rendered these components ineffective in hastening the humification process. Based on the correlation analysis, Al was more effective in hastening the humification process than Fe.

    Japanese Society of Pedology, 2004, ペドロジスト, 48 2 72-82 (2), 72 - 82, English

    [Refereed]

    Scientific journal

  • Characterization of humic substances in variuous soils and waters by 13C NMR spectroscopy.

    FUJITAKE Nobuhide, KHAN N A, YANAGI Y, ASAKAWA D, SUZUKI Takeshi, KODAMA H, NAGAO S, TANI M

    2004, In Humic Substances and Soil and Water Encironment: Proceedings 12th International meeting of IHSS, Sao Pedro, Sao Paulo, Brazil, Editors: L. Martin-Neto et al., 386-388, English

    International conference proceedings

  • Changes in structural properties of humic substances transformed by enzymatic reeactions.

    YANAGI Y, KITAYAMA K, SUZUKI Takeshi, FUJITAKE Nobuhide

    2004, In Humic Substances and Soil and Water Encironment: Proceedings 12th International meeting of IHSS, Sao Pedro, Sao Paulo, Brazil, Editors: L. Martin-Neto et al., 425-427, English

    International conference proceedings

  • Relation of chemical properties of soil humic acids to decolorization by white rot fungi ? Coriolus consors.

    YANAGI Y, HAMAGUCHI H, TAMAKI H, SUZUKI T, OTSUKA H, FUJITAKE Nobuhide

    2003, Soil Sci. Plant Nutri., 49,347-353, English

    Scientific journal

  • Properties of soil humic substances in fractions obtained by sequential extraction with pyrophosphate solutions at different pHs.

    FUJITAKE Nobuhide, STRYNAR M. J, YANAGI Y, SUZUKI T, OTSUKA H

    The FT-IR and ^1H NMR spectra of humic acids, which were obtained from four soils of different types (a Fibric Histosol, Dystric Cambisol, Umbric Andosol, and buried Umbric Andosol) by sequential extraction with pyrophosphate solutions at different pH values (i.e. at pH 3, 5, 7, 9, 11, and 13), were measured. The shape of the IR spectra for each humic acid depended on the differences in the soil origin rather than the pH values. The IR spectra of humic acids in the Histosol and Cambisol showed typical absorption associated with lignin. The humic acids in the Andosol and buried Andosol were characterized by the disappearance of the absorption assigned to aliphatic C-H and the prominence of the absorption attributed to aromatic C=C and COOH groups. The humic acids in the Histosol and Cambisol showed aliphatic properties compared with those in the Andosol and buried Andosol. As the pH values of the extractant increased, the absorption strength of the bands attributed to aliphatic and amide groups increased and those to carboxylic groups decreased. The XH NMR spectra were broadly divided into five regions, namely aromatic (H_), methoxyl (H_), and aliphatic protons a (H_α, β(H_β), and γ(H_γ) to aromatic rings, while the proportion of each proton species was estimated. The proportion of H_ in all the humic acids, except for the humic acids at pH 3 in the Histosol and the Andosol, decreased with the increase of the pH values. The increase of the ratio of H^ to Har with the increase of the pH values, was more conspicuous in the following order: Cambisol > Andosol > Histosol and buried Andosol. Based on the results obtained in this study and the results from repeated analysis of the particle size distribution by gel permeation chromatography conducted in Fujitake et al. (.Soil Sci. Plant Nutr., 44: 253-260, 1998), a model representation of the relationship between the proton composition and particle size in taking account of the differences in the properties of humic acids among soil types and extraction pH values, was illustrated.

    Japanese Society of Soil Science and Plant Nutrition, 2003, III. FT-IR and 1H NMR spectra ofhumic acids, 49,347-353 (3), 347 - 353, English

    Scientific journal

  • Optimization of a methylation procedure to obtain chloroformsoluble humic acids.

    FUJITAKE Nobuhide, STRYNAR M. J, MISHIMA T, TSUKAMOTO M, YANAGI Y, SUZUKI T, OTSUKA H, DEC J, BOLLAG J-M

    It will be important in future analyses of humic acids (HAs) by various chromatographic and spectrometric methods to obtain high yields of methylated HAs. A derivatization procedure for permethylation of HAs was evaluated in relation to the yield of the chloroform-soluble fraction. The procedure involved a 3 h incubation of HAs (50 mg) with methylsulfinyl carbanion (MSC) obtained by mixing petroleum-purified NaH with anhydrous dimethylsulfoxide (DMSO), followed by incubation with methyl iodide (CH_3I). Ten HAs isolated from different Japanese and American soils (three Andisols, four Inceptisols, one Histosol, one Alfisol, and one Ultisol) were used to optimize this procedure. Optimum derivatization was achieved within the first 6 h after the addition of MSC and CH_3I; further incubation (up to 24 h) did not result in significant changes in the yield of the chloroform-soluble fraction (60-100%). For most HAs, the maximal yields of chloroform-soluble fractions were obtained at concentrations of 10 mM for MSC and 13 mM for CH_3I.

    Japanese Society of Soil Science and Plant Nutrition, 2003, Soil Sci. Plant Nutri., 49,453-457 (3), 453 - 457, English

    Scientific journal

  • Studies of complex formation between anthraquinones and metal ions by electrospray ionization mass spectrometry

    R Arakawa, A Sasao, T Abura, T Suzuki, N Fujitake

    The metal complexation of the hydroxyanthraquinones, chrysotalunin, chrysophanol and their derivatives, with Al3+, Ni2+ and Zn2+ was studied by electrospray ionization mass spectrometry (ESI-MS). The results showed that chrysophanol and its derivatives form metal complexes with Al3+, Ni2+ and Zn2+ ions, but chrysotalunin does not. Among the metal ions, Al3+ was found to form the complexes most easily.

    IM PUBLICATIONS, 2001, EUROPEAN JOURNAL OF MASS SPECTROMETRY, 7 (6), 467 - 471, English

    [Refereed]

    Scientific journal

  • Properties of soil humic substances in fractions obtained by sequential extraction with pyrophosphate solutions at different pHs - II. Elemental composition and UV-VIS spectra of humic acids

    N Fujitake, A Kusumoto, M Tsukamoto, Y Noda, T Suzuki, H Otsuka

    Humic acids (HAs) obtained from four different soils by sequential extraction with pyrophosphate solutions at different pH values (i.e. at pH 3, 5, 7, 9, 11, and 13), were examined by ultraviolet and visible (UV-VIS) spectroscopy and elemental analysis. UV-VIS spectra from 230 to 700 nm were measured, and absorbance coefficients of 1% humic acid solutions at 600 nm (E-600(1%)) and Delta log K were calculated. The shape of the spectra of humic acids depended on the soil types rather than on the pH values. The E-600(1%) values were higher in the neutral region, and lower in the alkaline region, for each pH value they decreased in the following order: buried Andosol > Andosol > Histosol greater than or equal to Cambisol. The Delta log K values for each pH value were higher in the following order: Histosol > Cambisol > buried Andosol greater than or equal to Andosol. Although the linear correlation was found to be significant between the E-600(1%)) and Delta log K values, the relation between these optical properties and pH values differed among the soil types. However, in the neutral region, the higher E-600(1%) values of humic acids from buried Andosol and Andosol and the lower Delta log K values of humic acids from Cambisol and Histosol suggest that the humification degree was higher in the neutral region. Data of elemental composition and atomic ratios were obtained for each humic acid. The H/C ratios in the four soils increased gradually with increasing pH values from 5 to 13, and those for each pH value were commonly higher in the following order: Cambisol > Histosol > Andosol > buried Andosol. The O/C and O/H ratios decreased with increasing pH values. The results of the H/C versus O/C diagram suggested that decarboxylated humic acids were extracted at the higher pH values. A highly significant correlation coefficient was obtained between the H/C and O/H ratios (r = -0.891***), Results showing that the decrease of the pH values corresponded to the order of the humic acids in the correlation curve in the H/C versus O/H diagram suggest that the humic acids with a higher content of unsaturated bonds and a higher degree of oxidation were extracted at the lower pH values within the range from 5 to,13.

    JAPANESE SOC SOIL SCIENCE PLANT NUTRITION, Jun. 1999, SOIL SCIENCE AND PLANT NUTRITION, 45 (2), 349 - 358, English

    [Refereed]

    Scientific journal

  • Horizontal distribution of main hydroxyanthraquinones in soil

    T Suzuki, N Fujitake, Y Oji

    Six hydroxyanthraquinones (chrysophanol, chrysotalunin, microcarpin, physcion, 7,7'-biphyscion, and hinakurin) present in the samples of 26 surface soils were quantitatively analyzed, and the contents of HAQs in soil types were compared. The soil samples had been collected from 19 Umbric Andosols and seven Distric Cambisols, and the Andosols were further subdivided into those with allophanic soil materials (exchange acidity (y(1))<5 mL 100 g(-1)) and non-allophanic soil materials (y(1)greater than or equal to 5 mt 100 g(-1)). The following results were obtained. (1) It was determined quantitatively for the first time that chrysotalunin was the major hydroxyanthraquinone in many soils. (2) The amounts of major dimeric hydroxyanthraquinones (chrysotalunin, 7,7'-biphyscion, and microcarpin) in non-allophanic soil materials were significantly larger than those in allophanic soil materials. As the contents of chrysotalunin in Andosols were positively correlated with y(1), which was reported to be positively correlated with aluminum toxicity and exchangeable aluminum in soil, it is suggested that toxic aluminum may be involved in the production of soil hydroxyanthraquinones.

    TAYLOR & FRANCIS LTD, Jun. 1999, SOIL SCIENCE AND PLANT NUTRITION, 45 (2), 297 - 306, English

    [Refereed]

    Scientific journal

  • Takeshi Suzuki, Nobuhide Fujitake, Yoko Ueda, Yoshikiyo Oji

    The vertical distribution of main soil hydroxyanthraquinones (HAQs) in the soil profiles of five Japanese Andosols, one Japanese Gambisol, and one Nepalese Gambisol was analyzed quantitatively, using high performance liquid chromatography and thin Bayer chromatography with a two stage development accompanied by scanning densitormetry. The results were as follows: The vertical distribution patterns of chrysophanol (CIPL) and its dimers in Andosols profiles shewed maximum contents in the middle past of the surface horizon. The vertical distribution of physcion (PYS) and its dimers in soil profiles showed various patterns in each profile. AdditionaBPy, we investigated the vertical distribution of HAQs in AndosoPs under a Miscanthus sinensis grassland, and in an adjacent successional red pine (Pinus densiflora) forest at Sugadaira, Central Japan. En the surface soil (0–15 cm), the contents of the dimers of CPL (microcarpin and chrysotalunin) slightly increased and those of the dimers of PPS (7,7′-biphyscion and Rinakurian) showed a remarkable increase in the succession, whereas the contents of monomeric HAQs (CBL and PYS) slightly decreased suggesting preferential production of dimeric HAQs below a depth of 15 em in the forest Andosol. The dimers of CPL and the dimers sf PPS exhibited diRerent structures, vertical distribution patterns, and changes in the contents in Andosols in the secondary succession. Therefore, it was assumed that dimeric reaction processes of CPL may be different from those of PYS, if dimeric reactions had occurred in soil. © 1999, Taylor & Francis Group, LLC.

    1999, Soil Science and Plant Nutrition, 45 (3), 551 - 561, English

    [Refereed]

    Scientific journal

  • Properties of soil humic substances in fractions obtained by sequential extraction with pyrophosphate solutions at different pHs I. Yield and particle size distribution

    N Fujitake, A Kusumoto, M Tsukamoto, M Kawahigashi, T Suzuki, H Otsuka

    Humic (HAs) and fulvic acids (FAs) were obtained from A horizons of four different soils (a Fibric Histosol, Dystric Cambisol, Umbric Andosol, and buried Umbric Andosol) by the sequential extraction with pyrophosphate solutions at different pHs (i.e. at pH 3, 5, 7, 9, 11, and 13). The yield of the FAs from the four different soils decreased with the increase in pH values from 3 to 7, and then, increased or remained constant with pH values from 9 to 13. The distribution pattern of the yield of HAs differed among the four soils, and the total yield for HAs extracted at pH values extending from the acid to neutral region (3-7) was equal to or higher than that in the alkaline region (9-13), except for the Histosol. In particular, the yield of buried Andosol HAs at pH values of 3, 5, and 7 was remarkably high, ca. 25-30% of total HAs with pyrophosphate extractants. Sequential extraction with the pyrophosphate solutions gave sufficient amounts of HAs extracted for wide-ranging pH values extending from the acid to alkaline region to compare the properties of individual HAs based on the difference in pH values. Particle size distribution analysis of each HA determined by gel permeation chromatography (GPC) suggested that the proportion of components with a larger particle size differed among the HAs extracted from the four soils for the same pH value. It is, however, interesting to note that the proportion of components of HAs with a larger particle size in the four different soils increased gradually and regularly with the increase of the pH value. These results suggest that this sequential extraction technique is suitable for obtaining a series of HAs differing in particle size.

    JAPANESE SOC SOIL SCIENCE PLANT NUTRITION, Jun. 1998, SOIL SCIENCE AND PLANT NUTRITION, 44 (2), 253 - 260, English

    [Refereed]

    Scientific journal

  • Predomination of dimers over naturally occurring anthraquinones in soil

    N Fujitake, T Suzuki, M Fukumoto, Y Oji

    Four bianthraquinones and two monoanthraquinones were isolated as the major soil anthraquinones from a volcanic ash soil in Japan. They were identified as a new natural product 5,5'-biphyscion (named hinakurin) (3) and five known compounds, chrysotalunin (1), (-)-7,7'biphyscion (2), microcarpin (4), chrysophanol (5), and physcion (6) using MS, 1D NMR, and 2D NMR techniques. Although the dimers (1-4) are rarely found as natural products, they, along with 5 and 6, were ubiquitous and predominant over other anthraquinones in various soils from Japan and Nepal.

    AMER CHEMICAL SOC, Feb. 1998, JOURNAL OF NATURAL PRODUCTS, 61 (2), 189 - 192, English

    [Refereed]

    Scientific journal

  • Quantitative determination of the main hydroxyanthraquinones in soils by TLC with two-stage development

    T Suzuki, N Fujitake, Y Oji, T Takahashi

    The separation and quantitation of the five main hydroxyanthraquinones in soils has been performed by TLC with two development steps and densitometric scanning. The five hydroxyanthraquinones were completely resolved both from each other and from other accompanying compounds and were quantified hy densitometry in reflectance mode at a sample wavelength of 445 nm and a reference wavelength of 540 nm. The detection limit of the method was in the lower nanogram range (5-10 ng) and the peak area response was linearly dependent on quantity in the range 1-300 ng.

    SPRINGER HUNGARICA KIADO KFT, Jan. 1996, JPC-JOURNAL OF PLANAR CHROMATOGRAPHY-MODERN TLC, 9 (1), 48 - 51, English

    [Refereed]

    Scientific journal

MISC

  • 強酸性土壌における溶存有機物の三次元蛍光分析手法の開発

    渡邉育弥, 芦田均, 木田森丸, 鈴木武志, 藤嶽暢英

    2020, 日本土壌肥料学会講演要旨集(Web), 66

  • The Long-term Dynamics and Spectroscopic Characteristics of Dissolved Organic Matter in Paddy Soil Converted from Rotation to Monoculture under Different Fertilization Treatments

    GO Keikyo, KIDA Morimaru, DOMOTO Akiko, DOMOTO Akiko, ASHIDA Hitoshi, SUZUKI Takeshi, FUJITAKE Nobuhide

    2018, 日本土壌肥料学会講演要旨集, 64

  • P3-2-8 生分解性レジンコンクリートの分解制御方法の検討(ポスター,3-2 土壌生物の応用と制御,2015年度京都大会)

    鈴木 武志, 所谷 百恵, 鈴木 麻里子, 久保 京子, 河端 俊典, 藤嶽 暢英

    一般社団法人日本土壌肥料学会, 09 Sep. 2015, 日本土壌肥料学会講演要旨集, (61), 45 - 45, Japanese

  • P7-2-5 各種資材の土壌施用による丹波黒の連作障害の軽減方法の検討(ポスター,7-2 土壌改良資材,2015年度京都大会)

    川西 あゆみ, 川上 澄, 加藤 拓, 藤嶽 暢英, 鈴木 武志

    一般社団法人日本土壌肥料学会, 09 Sep. 2015, 日本土壌肥料学会講演要旨集, (61), 151 - 151, Japanese

  • 8-1-39 リン酸欠乏と高二酸化炭素濃度条件が2種類のルーピンとトマトの重金属吸収能力に与える影響(8-1 環境保全,2014年度東京大会)

    川西 あゆみ, 鈴木 武志, 藤嶽 暢英, Neumann Gunter, Romheld Volker

    一般社団法人日本土壌肥料学会, 09 Sep. 2014, 日本土壌肥料学会講演要旨集, (60), 152 - 152, Japanese

  • P2-1-4 ドイツBaden-Wurttemberg州の農耕地の腐植酸の化学構造特性に耕作が与える影響(ポスター,2-1 土壌有機・無機成分の構造・機能・ダイナミクス,2014年度東京大会)

    西村 望, 鈴木 武志, Demyan Scott, 藤嶽 暢英, 加藤 拓, Cadish George, Muller Trosten

    一般社団法人日本土壌肥料学会, 09 Sep. 2014, 日本土壌肥料学会講演要旨集, (60), 25 - 25, Japanese

  • P22-6 Combined application of plant growth regulators and metal chelators for the improvement of heavy metal phytoextraction

    Rajikumar Mani

    Japanese Society of Soil Science and Plant Nutrition, 07 Sep. 2010, Abstracts of the meeting, the Society of the Science of Soil and Manure, (56), 172 - 172, English

  • 15 植物によるアルミニウムの吸収の観点から土壌中のアルミニウムの分画定量法の検討(関西支部講演会,2009年度各支部会)

    戴 清霞, 鈴木 武志, 阿江 教治

    一般社団法人日本土壌肥料学会, 07 Sep. 2010, 日本土壌肥料学会講演要旨集, (56), 283 - 283, Japanese

  • 16 菌根菌非着生作物であるチンゲンサイが利用する有機態窒素の量的把握(関西支部講演会,2009年度各支部会)

    杉澤 恵利香, 土井 直人, 高本 美幸, 吉田 泰一郎, 鈴木 武志, 阿江 教治

    一般社団法人日本土壌肥料学会, 07 Sep. 2010, 日本土壌肥料学会講演要旨集, (56), 284 - 284, Japanese

  • 17 導管液に存在するD-アミノ酸の由来について : 土壌中の有機態窒素(PEON)に対する作物の反応(関西支部講演会,2009年度各支部会)

    土井 直人, 吉田 泰一郎, 杉澤 恵利香, 高本 美幸, 鈴木 武志, 阿江 教治

    一般社団法人日本土壌肥料学会, 07 Sep. 2010, 日本土壌肥料学会講演要旨集, (56), 284 - 284, Japanese

  • 11-13 ツバキ科などを含む樹木根(圏)が土壌アルミニウムの形態に及ぼす影響(11.植物の有害元素,2010年度北海道大会)

    戴 清霞, 阿江 教治, 鈴木 武志, Rajkumar Mani, 藤嶽 暢英, 福永 祥子

    一般社団法人日本土壌肥料学会, 07 Sep. 2010, 日本土壌肥料学会講演要旨集, (56), 79 - 79, Japanese

  • P21-1 石炭灰(クリンカアッシュ)の緑化用土としての利用方法の確立2 : 3年間の実証試験から(ポスター紹介,21.緑化技術,2009年度京都大会)

    鈴木 武志, 渡辺 郁夫, 原 昌久, 坂 文彦, 井汲 芳夫, 大島 祥子, 阿江 教治

    一般社団法人日本土壌肥料学会, 15 Sep. 2009, 日本土壌肥料学会講演要旨集, (55), 164 - 164, Japanese

  • 12-9 2007年の丹波篠山地方で栽培された丹波黒で多発した種子の裂皮の出現程度に及ぼす窒素施与条件の影響(12.植物の代謝成分と農作物の品質,2009年度京都大会)

    杉本 敏男, 宇野 雄一, 鈴木 武志, 森本 良太, 中塚 雅也, 白石 斎聖, 阿江 教治, 増田 亮一, 伊藤 一幸

    一般社団法人日本土壌肥料学会, 15 Sep. 2009, 日本土壌肥料学会講演要旨集, (55), 105 - 105, Japanese

  • 6 Heatphos法によって作成された人工リン鉱石(乾燥品)およびこれに由来する加工リン酸肥料の水稲(Oryza sativa L.)への肥効(関西支部講演会,2008年度各支部会)

    新免 唯, 梅谷 章人, 鈴木 武志, 阿江 教治

    一般社団法人日本土壌肥料学会, 15 Sep. 2009, 日本土壌肥料学会講演要旨集, (55), 292 - 292, Japanese

  • 2-22 植物のケイ酸吸収能力の差が新鮮火山灰のアルミニウム富化に及ぼす影響について(2.土壌有機・無機化学,2009年度京都大会)

    福永 祥子, 阿江 教治, 鈴木 武志, 馬 建鋒, 間藤 徹, 藤嶽 暢英

    一般社団法人日本土壌肥料学会, 15 Sep. 2009, 日本土壌肥料学会講演要旨集, (55), 26 - 26, Japanese

  • 19-2 Heatphos法により作製した人工リン鉱石乾燥品の特異な施肥効果の解明(19.肥料および施肥法,2008年度愛知大会)

    梅谷 章人, 野網 よしの, 井汲 芳夫, 鈴木 武志, 阿江 教治

    一般社団法人日本土壌肥料学会, 09 Sep. 2008, 日本土壌肥料学会講演要旨集, (54), 144 - 144, Japanese

  • 19-1 Heatphos法により作製した人工リン鉱石のリンの形態および乾燥品に含まれる有機物の形態(19.肥料および施肥法,2008年度愛知大会)

    鈴木 武志, 梅谷 章人, 阿江 教治

    一般社団法人日本土壌肥料学会, 09 Sep. 2008, 日本土壌肥料学会講演要旨集, (54), 144 - 144, Japanese

  • 24 可給態窒素の土壌中での蓄積様式(関西支部講演会,2007年度各支部会)

    尾崎 恵太, 鈴木 武志, 阿江 教治

    一般社団法人日本土壌肥料学会, 09 Sep. 2008, 日本土壌肥料学会講演要旨集, (54), 310 - 310, Japanese

  • 4-1 植物の栄養特性が鉱物の風化に及ぼす影響(4.土壌物理化学・鉱物,2007年度東京大会)

    辻本 涼太, 小河 甲, 鈴木 武志, 阿江 教治

    一般社団法人日本土壌肥料学会, 22 Aug. 2007, 日本土壌肥料学会講演要旨集, (53), 29 - 29, Japanese

  • 4 Heatphos 法による人工リン鉱石の施肥効果について (予報) : 土壌吸着試験およびポット栽培試験から(関西支部講演会, 2005年度各支部会講演要旨)

    辻本 涼太, 野網 よしの, 熊山 佳博, 鈴木 武志, 阿江 教治

    一般社団法人日本土壌肥料学会, 05 Sep. 2006, 日本土壌肥料学会講演要旨集, (52), 291 - 291, Japanese

  • P21-1 石炭灰 (クリンカアッシュ) の緑化用土としての利用方法の確立 : 金属類の挙動および緑化樹木への影響(21. 緑化技術, 2006年度秋田大会講演要旨)

    坂 文彦, 鈴木 武志, 渡辺 郁夫, 井汲 芳夫, 阿江 教治

    一般社団法人日本土壌肥料学会, 05 Sep. 2006, 日本土壌肥料学会講演要旨集, (52), 160 - 160, Japanese

  • Properties of Humic Acid Like Substances (HALS) created from sugar and amino acid with volcanic ash by thermal incubation

    Khan Nazmul Ahsan, Fujitake Nobuhide, Suzuki Takeshi, Otsuka Hiroo

    Kobe University, Mar. 2006, Memoirs of the Graduate School of Science and Technology, Kobe University. A, 24, 11 - 22, English

  • 中性のピロリン酸Na溶液で抽出可能なPEON様物質の蓄積様式の推定

    尾崎恵太, 阿江 教治, 鈴木 武志, 小山 洋一, 飯島 克昌

    一般社団法人日本土壌肥料学会, 2006, 土肥要旨集, 52, 127 - 127, Japanese

  • P20-6 石炭灰を投入したイナワラおよび木質系堆肥の堆肥化時における化学成分の経時的変化とその堆肥特性(ポスター紹介,20.土壌改良資材,日本土壌肥料学会 2005年度大会講演要旨集)

    鈴木 武志, 井汲 芳夫, 渡邊 郁夫, 藤嶽 暢英, 大塚 紘雄

    一般社団法人日本土壌肥料学会, 06 Sep. 2005, 日本土壌肥料学会講演要旨集, (51), 162 - 162, Japanese

  • 浅川 大地, 望月 秀将, 柳 由貴子, 鈴木 武志, 藤嶽 暢英

    一般社団法人 日本土壌肥料学会, 2005, 日本土壌肥料学会講演要旨集, 51 (0), 18 - 18, Japanese

  • 石炭灰の緑化用土としての特性と緑化樹木に与える影響(21. 緑化技術, 2004年度大会講演要旨集)

    坂 文彦, 鈴木 武志, 渡邊 郁夫, 村尾 洋一, 井汲 芳夫, 藤嶽 暢英, 大塚 紘雄

    一般社団法人日本土壌肥料学会, 14 Sep. 2004, 日本土壌肥料学会講演要旨集, (50), 163 - 163, Japanese

  • A型腐植酸様物質を含む土壌改良資材の創出 (第三報) : 木質炭素源と石炭灰を用いたA型腐植酸様物質の創出とその分解特性(20. 土壌改良資材, 2004年度大会講演要旨集)

    井汲 芳夫, 鈴木 武志, 藤嶽 暢英, 大塚 紘雄

    一般社団法人日本土壌肥料学会, 14 Sep. 2004, 日本土壌肥料学会講演要旨集, (50), 159 - 159, Japanese

  • 小林 孝行, 浅川 大地, 柳 由貴子, 鈴木 武志, 渡邊 眞紀子, 太田 寛行, 藤嶽 暢英

    一般社団法人 日本土壌肥料学会, 2004, 日本土壌肥料学会講演要旨集, 50 (0), 20 - 20, Japanese

  • 望月 秀将, 浅川 大地, 鈴木 武志, 大塚 紘雄, 石井 弘明, 金澤 洋一, 藤嶽 暢秀

    一般社団法人 日本土壌肥料学会, 2004, 日本土壌肥料学会講演要旨集, 50 (0), 21 - 21, Japanese

  • Reactivity of enzymes to humic substances

    Y Yanagi, K Kitayama, T Suzuki, H Otsuka, N Fujitake

    PERGAMON-ELSEVIER SCIENCE LTD, Sep. 2003, GEOCHIMICA ET COSMOCHIMICA ACTA, 67 (18), A558 - A558, English

    Summary international conference

  • 2-2 フルボ酸メチル誘導体の作成とそのHPSEC分析について(2.土壌有機・無機化学)

    三島 武寿, 鈴木 武志, 大塚 紘雄, 藤嶽 暢英

    一般社団法人日本土壌肥料学会, 20 Aug. 2003, 日本土壌肥料学会講演要旨集, (49), 14 - 14, Japanese

  • 2-7 Effect of Phosphate and pH on humification of Three Plant Residues with Fresh Volcanic Ashes

    Atendido Socorro

    Japanese Society of Soil Science and Plant Nutrition, 20 Aug. 2003, Abstracts of the meeting, the Society of the Science of Soil and Manure, (49), 16 - 16, English

  • 2-8 A型腐植酸様物質を含む土壌改良資材の創出(第三報) : 創出したA型腐植酸様物質の化学構造特性(2.土壌有機・無機化学)

    鈴木 武志, 井汲 芳夫, 吉田 淳平, 藤嶽 暢英, 大塚 紘雄

    一般社団法人日本土壌肥料学会, 20 Aug. 2003, 日本土壌肥料学会講演要旨集, (49), 16 - 16, Japanese

  • 22-13 神戸市周辺のため池に存在する水中有機物の特性および類型化(22.環境保全)

    福森 郁哉, 平井 恵子, 鈴木 武志, 藤嶽 暢英, 大塚 紘雄

    一般社団法人日本土壌肥料学会, 20 Aug. 2003, 日本土壌肥料学会講演要旨集, (49), 167 - 167, Japanese

  • 17-2 和歌山県田辺市周辺のウメ園における土壌マンガン含量について(17.園地・施設土壌肥よく度)

    大塚 紘雄, 中村 誠, 小林 紀彦, 辻本 正直, 鈴木 武志, 藤嶽 暢英

    一般社団法人日本土壌肥料学会, 20 Aug. 2003, 日本土壌肥料学会講演要旨集, (49), 134 - 134, Japanese

  • 2-13 Effect of Different Forms of Inorganic Materials on Humification of Various Plant Residues

    Atendido Socorro

    Japanese Society of Soil Science and Plant Nutrition, 25 Mar. 2002, Abstracts of the meeting, the Society of the Science of Soil and Manure, (48), 9 - 9, English

  • 2-14 Comparison of Inital Stage of Humic Acid Formation from Various Plant residues and nonhumic model substances.

    Khan Nazmul

    Japanese Society of Soil Science and Plant Nutrition, 25 Mar. 2002, Abstracts of the meeting, the Society of the Science of Soil and Manure, (48), 9 - 9, English

  • 2-7 各種腐植物質の^<13>C NMR特性(2.土壌有機・無機化学)

    濱口 誠司, 藤嶽 暢英, 柳 由貴子, 清田 拓郎, 鈴木 武志, 大塚 紘雄

    一般社団法人日本土壌肥料学会, 25 Mar. 2002, 日本土壌肥料学会講演要旨集, (48), 7 - 7, Japanese

  • 21-15 各種副資材を投入した伐採木チップ堆肥の特性(21.土壌改良資材)

    鈴木 武志, 岡本 昌太郎, 渡邊 郁夫, 井汲 芳夫, 藤嶽 暢英, 大塚 紘雄

    一般社団法人日本土壌肥料学会, 25 Mar. 2001, 日本土壌肥料学会講演要旨集, (47), 191 - 191, Japanese

  • 23-16 神戸市周辺のため池に存在する水中懸濁物質(SS)の有機物特性(23.地域環境)

    高橋 俊郎, 奥津 有紀, 鈴木 武志, 藤嶽 暢英, 大塚 紘雄

    一般社団法人日本土壌肥料学会, 25 Mar. 2001, 日本土壌肥料学会講演要旨集, (47), 203 - 203, Japanese

  • 2-16 A型腐植酸を含む土壌改良資材の創出(第二報) : 木質炭素源(チップ材)と石炭灰を用いたA型腐植酸の創出(2.土壌有機・無機化学)

    井汲 芳夫, 周 恵中, 籏持 和洋, 審 浩年, 鈴木 武志, 藤嶽 暢英, 大塚 紘雄

    一般社団法人日本土壌肥料学会, 25 Mar. 2001, 日本土壌肥料学会講演要旨集, (47), 14 - 14, Japanese

  • 2-13 pH別逐次抽出法で得られた腐植酸の特性 : ^<13>C NMRとSECについて(2.土壌有機・無機化学)

    藤嶽 暢英, 楠本 敦子, 濱口 誠司, 鈴木 武志, 大塚 紘雄

    一般社団法人日本土壌肥料学会, 25 Mar. 2001, 日本土壌肥料学会講演要旨集, (47), 13 - 13, Japanese

  • 2-15 メチル化処理の利用による腐植酸の研究 : IV平均分子量と分子量分布について(2.土壌有機・無機化学)

    藤嶽 暢英, 塚本 真由子, 三島 武寿, 鈴木 武志, 大塚 紘雄

    一般社団法人日本土壌肥料学会, 25 Mar. 2001, 日本土壌肥料学会講演要旨集, (47), 14 - 14, Japanese

  • 13-3 六甲山に分布する火山灰土の存在(13.土壌生成・分類)

    迫村 竜也, 鈴木 武志, 藤嶽 暢英, 大塚 紘雄

    一般社団法人日本土壌肥料学会, 25 Mar. 2000, 日本土壌肥料学会講演要旨集, (46), 117 - 117, Japanese

  • 2-23 糸状菌による腐植酸の褐色に及ぼす粘土の影響(2.土壌有機・無機化学)

    柳 由貴子, 牧野 佐知子, 藤嶽 暢英, 鈴木 武志, 大塚 紘雄

    一般社団法人日本土壌肥料学会, 25 Mar. 2000, 日本土壌肥料学会講演要旨集, (46), 17 - 17, Japanese

  • 2-15 各種植物遺体と新鮮火山灰の反応に基づく腐植酸のスペクトル特性(2.土壌有機・無機化学)

    野田 幸雄, 藤嶽 暢英, 鈴木 武志, 大塚 紘雄

    一般社団法人日本土壌肥料学会, 25 Mar. 2000, 日本土壌肥料学会講演要旨集, (46), 13 - 13, Japanese

  • 2-16 A型腐植酸を含む土壌改良資材の創出(第一報) : イナワラから石炭灰を用いたA型腐植酸の創出(2.土壌有機・無機化学)

    井汲 芳夫, 八幡 有紀, 鈴木 武志, 藤嶽 暢英, 大塚 紘雄

    一般社団法人日本土壌肥料学会, 25 Mar. 2000, 日本土壌肥料学会講演要旨集, (46), 13 - 13, Japanese

  • 10 湿原および池沼水中の腐植物質の特徴付け(関西支部講演会)

    奥津 有紀, 高橋 俊郎, 藤嶽 暢英, 鈴木 武志, 大塚 紘雄

    一般社団法人日本土壌肥料学会, 25 Mar. 2000, 日本土壌肥料学会講演要旨集, (46), 325 - 325, Japanese

  • Occurrence of Smectite on the Pumice Surface Derived from Taal Volcano in the Phillppines

    SUZUKI Takeshi, OTSUKA Hiroo, BABIERA Victorciti B., BRIONES Angelina M., FUJITAKE Nobuhide, OHTA Takeshi, ATENDIDO Socorro A. B.

    The pumice layer was derived from the northwest fringe of Taal Volcano somma in Kaybagal, Tagaytay City in the Philippines. It has a gravel diameter of 3 to 5 centimeters (cm). The pumice gravel has a yellow surface color and a black inner color. These were observed using an optical microscope and scanning electron microscope (SEM). The chemical and mineralogical constituents were determined using a electron probe micro analyzer (EPMA), and X-ray diffraction apparatus. The results obtained from the optical microscope and SEM showed bubbles in the black or inner part of the pumice, while the surface showed weathered fine particles. Some of the bubbles observed were also partly weathered. The X-ray diffraction pattern showed smectite as the predominant mineral in the yellow surface layer, while amorphous materials were predominate in the black inner part. We speculate that smectite of the pumice may result from the weathering of amorphous glass in the inner part of pumice.

    Japanese Society of Pedology, 30 Jun. 1999, ペドロジスト, 43 (1), 22 - 27, English

Books etc

  • 地域固有性の発言による農業・農村の創造(中塚雅也 編)

    SUZUKI TAKESHI

    Others, 筑波書房, Mar. 2018, Japanese, 第5章 土壌の地域固有性と人との関わり,pp.57-67 第9章 地域伝統の応報による農法による持続可能な土作りの可能性 pp107-118

    Scholarly book

  • 農村の土壌, 土壌の観察 農村で学ぶはじめの一歩 農村入門ガイドブック,中塚雅也編

    SUZUKI TAKESHI

    Others, 昭和堂, 2011, Japanese

    Textbook

  • 土をどう教えるか -現場で役立つ環境教育教材- 土壌教育委員会編

    SUZUKI TAKESHI

    Others, 古今書院, 2009, Japanese

    General book

Presentations

  • The effect of coal bottom ash as revegetation substrate on revegetation woody plants and environment - pilot scale experiment

    SUZUKI TAKESHI, 井汲 芳夫, 坂 文彦, 渡辺郁夫, 藤嶽暢英, 阿江教治

    5th Global Summit and Expo on Pollutin Control, Oct. 2018, English, prague, International conference

    Poster presentation

  • Improvement of heavy metal phytoextraction by application of metal chelators and plant growth regulators

    茶谷友貴, SUZUKI TAKESHI, 藤嶽暢英

    5th Global Summit and Expo on Pollutin Control, Oct. 2018, English, prague, International conference

    Poster presentation

  • 薦池大納言種子のサイズに影響を与える要因の探索 ―土壌理化学性およびアズキ種子の無機元素組成― (第2報)

    SUZUKI TAKESHI, 山口 創, 村瀬未希子, 福島寛子, 明神貴広, 藤嶽暢英

    日本土壌肥料学会, Sep. 2018, Japanese, 日本大学, Domestic conference

    Poster presentation

  • 侵略的外来生物の肥料化に関する研究

    茶谷友貴, SUZUKI TAKESHI, 友常満利, 藤嶽暢英

    日本土壌肥料学会, Sep. 2017, Japanese, 仙台市, Domestic conference

    Poster presentation

  • 各種資材の土壌施用による丹波黒の連作障害の軽減方法

    SUZUKI TAKESHI, 川西あゆみ, 川上 潔, 山口 創, nbuhide fujitake

    日本土壌肥料学会, Sep. 2017, Japanese, 仙台市, Domestic conference

    Poster presentation

  • 薦池大納言種子のサイズに影響を与える要因の探索-土壌理化学性およびアズキ種子の無機元素組成

    SUZUKI TAKESHI, 村瀬未希子, 福島寛子, 山口 創, 藤嶽暢英

    日本土壌肥料学会, Sep. 2016, Japanese, 佐賀大学, Domestic conference

    Poster presentation

  • 生分解性レジンコンクリートの分解制御方法の検討

    SUZUKI TAKESHI, TOKOROTANI MOMOE, SUZUKI MARIKO, KUBO KYOKO, KAWABATA TOSHINORI, FUJITAKE NOBUHIDE

    日本土壌肥料学会京都大会, Sep. 2015, Japanese, 日本土壌肥料学会, 京都大学, Domestic conference

    Poster presentation

  • 各種資材の土壌施用による丹波黒の連作障害の軽減方法の検討

    KAWANISHI AYUMI, KAWAKAMI KIYOSHI, KATO TAKU, FUJITAKE NOBUHIDE, SUZUKI TAKESHI

    日本土壌肥料学会京都大会, Sep. 2015, Japanese, 日本土壌肥料学会, 京都大学, Domestic conference

    Poster presentation

  • The characteristic of substrates for roof kitchen garden -Commercial and brand-new recycled substrates-

    SUZUKI TAKESHI, KUMAGAWA AKIKO, FUJITAKE NOBUHIDE

    XIX INQUA Congress, Aug. 2015, English, International Union for Quaternary Research, 名古屋国際会議場, International conference

    Oral presentation

  • 重金属を収着させた非晶質および結晶性粘土コロイドに対するフルボ酸の収脱着特性

    加藤 拓, 﨑山 敦史, SUZUKI TAKESHI, FUJITAKE NOBUHIDE

    日本腐植物質学会, Nov. 2014, Japanese, 日本大学, Domestic conference

    Oral presentation

  • スコットランド地方の有色河川水におけるフミン物質濃度と溶存元素濃度の関係

    山野 智子, 佐藤 元, 園田 碧, SUZUKI TAKESHI, 加藤 拓, FUJITAKE NOBUHIDE

    日本腐植物質学会, Nov. 2014, Japanese, 日本大学, Domestic conference

    Poster presentation

  • ドイツBaden-Wurttemberg州の農耕地の腐植酸の化学構造特性に耕作が与える影響,日本土壌肥料学会東京大会

    西村 望, SUZUKI TAKESHI, Scott Demyan, FUJITAKE NOBUHIDE, 加藤 拓, George Cadish, Trosten Muller

    日本土壌肥料学会, Sep. 2014, Japanese, 東京農工大学, Domestic conference

    Poster presentation

  • C/N比の異なる堆肥の連用が土壌腐植酸の量的変化に及ぼす影響

    加藤 拓, 近藤 美由紀, 飯村 康夫, 池羽 正晴, SUZUKI TAKESHI, FUJITAKE NOBUHIDE

    日本土壌肥料学会, Sep. 2014, Japanese, 東京農工大学, Domestic conference

    Oral presentation

  • 水分量の異なる環境下における生分解性樹脂コンクリートの曲げ強度変化

    KAWABATA TOSHINORI, SUZUKI TAKESHI, SUZUKI MARIKO

    H26年度農業農村工学会大会, Aug. 2014, Japanese, 新潟, Domestic conference

    Oral presentation

  • Composting woody wastes with coal ashes by piling method: Chemical properties changes and influence of adding coal ashes

    SUZUKI TAKESHI, 井汲 芳夫, 渡邊 郁夫, 出口美恵子, 中村 誠, 藤嶽 暢英, 大塚 紘雄

    The First 3R International Scientific Conference on Material Cycles and Waste Management, Feb. 2014, English, 京都大学, International conference

    Poster presentation

  • 生分解性樹脂コンクリートの劣化速度に関する一考察―4ケ月土中養生―

    鈴木麻里子, 久保京子, 秦栄三, 中村誠, 吉村睦, 鈴木武志, 河端俊典

    農業農村工学会大会講演会講演要旨集, Sep. 2013, Japanese, Domestic conference

    Others

  • 生分解性コンクリートの劣化による圧縮強度変化および加水分解性に関する一考察

    鈴木麻里子, 久保京子, 秦栄三, 中村誠, 吉村睦, 鈴木武志, 河端俊典

    農業農村工学会大会講演会講演要旨集, Sep. 2013, Japanese, Domestic conference

    Poster presentation

  • 灰屋で作製した焼土を用いた施肥方法が丹波黒の生育に与える影響

    SUZUKI TAKESHI, KITABA Akiko, Fumi KONDO

    日本土壌肥料学会名古屋大会, Sep. 2013, Japanese, 日本土壌肥料学会, 名古屋大学, Domestic conference

    Poster presentation

  • 丹波黒(Glycine max)種子成分に及ぼす施肥方法の影響

    IRIKAWA Souta, SUZUKI TAKESHI, MIYAKE Chikahisa, SUGIMOTO Toshio

    日本土壌肥料学会, Sep. 2012, Japanese, 鳥取大学, Domestic conference

    Poster presentation

  • Deposited Muddy Soil Reuse Technique Using Industrial Waste for Reconstruction of Small Earth fill Dams

    Suzuki M, Kawabata T, Uchida K, Suzuki T

    -, Jun. 2012, English, International conference

    Oral presentation

  • Mechanical behavior of blended geo-materials for impermeable core zone of small earth-fill dams using recycled materials

    Kawabata T, Suzuki M, Uchida K, Suzuki T

    International Symposium on Deformation Characteristics of Geomaterials, Deformation Characteristics of Geomaterials, Vol.2, Hanrimwon Co.,Ltd., Sep. 2011, English, International conference

    Oral presentation

  • 土壌中からリン酸系溶液で抽出される有機態窒素の生成およびその蓄積様式の考察

    高本美幸, SUZUKI TAKESHI, 阿江 教治, 杉澤恵利香

    日本土壌肥料学会関西支部会, Dec. 2010, Japanese, 神戸, Domestic conference

    Oral presentation

  • ツバキ科などを含む樹木根(圏)が土壌アルミニウムの形態に及ぼす影響

    戴 清霞, 阿江 教治, SUZUKI TAKESHI, Rajkumar Mani, 藤嶽 暢英, 福永 祥子

    日本土壌肥料学会2010年度北海道大会, Sep. 2010, Japanese, 日本土壌肥料学会, 北海道, Domestic conference

    Oral presentation

  • Combined application of plant growth regulators and metal chelators for the improvement of heavy metal phytoextraction

    MANI Rajikumar, 戴 清霞, SUZUKI TAKESHI, 藤嶽 暢英, 阿江 教治

    日本土壌肥料学会2010年度北海道大会, Sep. 2010, Japanese, 日本土壌肥料学会, 北海道, Domestic conference

    Poster presentation

  • Creation of the Soil for Impermeable Core Zone for Earth-fill Dams

    Kawabata T, Suzuki M, Suzuki T, Uchida K

    20th Int. Conf. of ISOPE, Jun. 2010, English, International conference

    Oral presentation

  • 導管液に存在する D- アミノ酸の由来について=土壌中の有機態窒素( PEON )に対する作物の反応=

    土井直人, 吉田泰一郎, 杉澤恵利香, 高本美幸, SUZUKI TAKESHI, 阿江 教治

    日本土壌肥料学会関西支部会, Dec. 2009, Japanese, 高知大学, Domestic conference

    Oral presentation

  • 植物によるアルミニウムの吸収の観点から土壌中のアルミニウムの分画定量法の検討

    戴 清霞, SUZUKI TAKESHI, 阿江 教治

    日本土壌肥料学会関西支部会, Dec. 2009, Japanese, 高知大学, Domestic conference

    Oral presentation

  • 菌根菌非着生作物であるチンゲンサイが利用する有機態窒素の量的把握

    杉澤恵利香, 土井直人, 高本美幸, 吉田泰一郎, SUZUKI TAKESHI, 阿江 教治

    日本土壌肥料学会関西支部会, Dec. 2009, Japanese, 高知大学, Domestic conference

    Oral presentation

  • 石炭灰(クリンカアッシュ)の緑化用土としての利用方法の確立2-3年間の実証試験から

    SUZUKI TAKESHI, 渡邊 郁夫, 原 昌久, 坂 文彦, 井汲 芳夫, 大島 祥子, 阿江 教治

    日本土壌肥料学会, Sep. 2009, Japanese, 京都大学, Domestic conference

    Poster presentation

  • 植物のケイ酸吸収能力の差が新鮮火山灰のアルミニウム富化に及ぼす影響について

    福永 祥子, 阿江 教治, SUZUKI TAKESHI, 馬 建鋒, 間藤 徹, 藤嶽 暢英

    日本土壌肥料学会2009年度京都大会, Sep. 2009, Japanese, 日本土壌肥料学会, 京都, Domestic conference

    Oral presentation

  • ブレンドしたため池コア用土の溶出成分特性に関する検討

    内田一徳, 斉田洋之, 河端俊典, 岩出郁美, 鈴木麻里子, 鈴木武志

    地盤工学研究発表会発表講演集, Aug. 2009, Japanese, Domestic conference

    Others

  • Heatphos法によって作成された人工リン鉱石(乾燥品)およびこれに由来する加工リン酸肥料の水稲(Oryza sativa L.)への肥効

    新免 唯, 梅谷 章人, SUZUKI TAKESHI, 阿江 教治

    日本土壌肥料学会関西支部会, Dec. 2008, Japanese, 徳島大学, Domestic conference

    Oral presentation

  • 石炭クリンカアッシュの緑化用土としての利用

    SUZUKI TAKESHI, 渡邊 郁夫, 原 昌久, 坂 文彦, 井汲 芳夫, 大島 祥子, 阿江教治

    ELR福岡三学会合同大会, Sep. 2008, Japanese, 福岡大学, Domestic conference

    Poster presentation

  • Heatphos法により作製した人工リン鉱石乾燥品の特異な施肥効果の解明

    梅谷 章人, 野網 よしの, 井汲 芳夫, SUZUKI TAKESHI, 阿江教治

    日本土壌肥料学会, Sep. 2008, Japanese, 名古屋市立大学, Domestic conference

    Oral presentation

  • Heatphos法により作製した人工リン鉱石のリンの形態および乾燥品に含まれる有機物の形態

    SUZUKI TAKESHI, 梅谷章人, 阿江教冶

    日本土壌肥料学会, Sep. 2008, Japanese, 名古屋市立大学, Domestic conference

    Oral presentation

  • ニュウーファウンドランド島西部における森林再生阻害に関する研 究(第2報)-火事後の土壌断面と肥沃度の経時的変化

    SUZUKI TAKESHI, Mallik U. Azim

    日本土壌肥料学会, Sep. 2007, Japanese, 明治大学, Domestic conference

    Oral presentation

  • 中性のピロリン酸Na溶液で抽出可能なPEON様物質の蓄積様式の推定

    尾崎恵太, 阿江教治, SUZUKI TAKESHI, 小山洋一, 飯島克昌

    日本土壌肥料学会, Sep. 2006, Japanese, 秋田県立大学, Domestic conference

    Oral presentation

  • 石炭灰(クリンカアッシュ)の緑化用土としての利用方法の確立 -金属類の挙動および緑化樹木への影響-

    坂 文彦, 鈴木 武志, 渡辺 郁夫, 井汲 芳夫, 阿江 教治

    日本土壌肥料学会, Sep. 2006, Japanese, 秋田県立大学, Domestic conference

    Poster presentation

  • 土壌および周辺沢中の水溶性腐植物質の構造特性 季節による変動

    浅川 大地, 望月 秀将, 柳 由貴子, 鈴木 武志, 藤嶽 暢英

    土肥学会, 2005, Japanese, 日本土壌肥料学会, 島根, Domestic conference

    Oral presentation

  • 石炭灰を投入したイナワラおよび木質系堆肥の堆肥化時における化学成分の経時的変化とその堆肥特性

    鈴木 武志, 井汲 芳夫

    土肥学会, 2005, Japanese, 日本土壌肥料学会, 島根, Domestic conference

    Oral presentation

  • Heatphos法による人工リン鉱石の施肥効果について(予報)~土壌吸着実験およびポット試験から~

    辻本 涼太, 野網 よしの, 熊山 佳博, 鈴木 武志, 阿江 教治

    土肥学会関西支部会, 2005, Japanese, 未記入, 京都, Domestic conference

    Oral presentation

  • A型腐植酸様物質を含む土壌改良資材の創出(第三報)木質炭素源と石炭灰を用いたA型腐植酸様物質の創出とその分解特性

    井汲 芳夫, 鈴木 武志, 藤嶽 暢英, 大塚 紘雄

    日本土壌肥料学会, 2004, Japanese, 日本土壌肥料学会, 福岡, Domestic conference

    Oral presentation

  • 木質廃棄物とケイフンから作成した堆肥の腐熟化に伴う腐植酸様物質の化学構造特性の変化

    鈴木 武志, 吉田 淳平, 藤嶽 暢英, 大塚 紘雄

    日本腐植物質学会第20回講演会, 2004, Japanese, 日本腐植物質学会, 千葉, Domestic conference

    Oral presentation

  • 無機元素・アントシアニン分析による丹波黒(ダイズ)の産地判別

    小阪 英樹, 畠中 知子, 鈴木 武志, 杉本 敏男, 津川 兵衛, 曳野 亥三夫, 鈴木 忠直, 戸田 登志也

    日本食品科学工学会51回大会, 2004, Japanese, 日本食品科学工学会, 岩手大学, Domestic conference

    Oral presentation

  • 無機元素・アントシアニン分析による丹波黒(ダイズ)の産地判別

    小坂 英樹, 戸田 登志也, HATANAKA TOMOKO, SUZUKI TAKESHI, SUGIMOTO TOSHIO, 曳野 亥三夫, 鈴木 忠直

    日本食品科学工学会大会, 2004, Japanese, Domestic conference

    Oral presentation

  • 土壌中の腐植酸褪色菌の菌数ならびに褪色活性の測定

    余田 香里, 柳 由貴子, 鈴木 武志, 藤嶽 暢英

    日本土壌肥料学会, 2004, Japanese, 日本土壌肥料学会, 福岡, Domestic conference

    Oral presentation

  • 土壌からHCI-DMSOで抽出される緑色色素について

    小林 孝行, 浅川 大地, 柳 由貴子, 鈴木 武志, 渡邊 眞紀子, 太田 寛行, 藤嶽 暢英

    日本土壌肥料学会, 2004, Japanese, 日本土壌肥料学会, 福岡, Domestic conference

    Oral presentation

  • 石炭灰の緑化用土としての特性と緑化樹木に与える影響

    坂 文彦, 鈴木 武志, 渡辺 郁夫, 井汲 芳夫, 藤嶽 暢英, 大塚 紘雄

    日本土壌肥料学会, 2004, Japanese, 日本土壌肥料学会, 福岡, Domestic conference

    Oral presentation

  • 水溶性腐植物質の動態と構造特性

    浅川 大地, 望月 秀将, 鈴木 武志, 石井 弘明, 金澤 洋一, 藤嶽 暢英

    日本腐植物質学会第20回講演会, 2004, Japanese, 日本腐植物質学会, 千葉, Domestic conference

    Oral presentation

  • リター及び土壌中の水溶性腐植物質の採取法についての検討

    望月 秀将, 浅川 大地, 鈴木 武志, 大塚 紘雄, 石井 弘明, 金澤 洋一, 藤嶽 暢英

    日本土壌肥料学会, 2004, Japanese, 日本土壌肥料学会, 福岡, Domestic conference

    Poster presentation

  • フルボ酸退色研究における固定化Laccaseの利用

    北山 慶一, 柳 由貴子, 鈴木 武志, 藤嶽 暢英

    日本腐植物質学会第20回講演会, 2004, Japanese, 日本腐植物質学会, 千葉, Domestic conference

    Oral presentation

  • カナダニューファンドランド島西部における森林再生阻害に関する研究-森林土壌と攪乱後のヒース土壌の土壌断面と肥沃土の変化

    鈴木 武志, MALLIK A U

    日本土壌肥料学会, 2004, Japanese, 日本土壌肥料学会, 福岡, Domestic conference

    Oral presentation

  • Soil profiles and fertility of Kalmia dominated heath and continuous black spruce (Picea mariana) forest in eastern Newfoundland.

    SUZUKI Takeshi, MALLIK A U

    International Symposium on Allelopathy Research and Application., 2004, English, 未記入, Shanshui, Guandong, China., International conference

    Oral presentation

  • 分取HPSEC で得られた腐植酸の粒子サイズ別画分の構造特性

    清田 拓郎, 藤嶽 暢英, 柳 由貴子, 鈴木 武志, 大塚 紘雄

    日本腐植物質学会第19回講演会講演要旨集, Nov. 2003, Japanese, 日本腐植物質学会, 佐賀大学, Domestic conference

    Oral presentation

  • 土壌からHCl-DMSOで抽出される緑色色素について

    小林 孝行, 浅川 大地, 柳 由貴子, 鈴木 武志, 大塚 紘雄, 渡辺 眞紀子, 太田 寛行, 藤嶽 暢英

    日本腐植物質学会第19回講演会講演要旨集, Nov. 2003, Japanese, 日本腐植物質学会, 佐賀大学, Domestic conference

    Oral presentation

  • 酵素処理による腐植酸およびフルボ酸の特性変化

    柳 由貴子, 北山 慶一, 清田 拓郎, 鈴木 武志, 大塚 紘雄, 藤嶽 暢英

    日本腐植物質学会第19回講演会講演要旨集, Nov. 2003, Japanese, 日本腐植物質学会, 佐賀大学, Domestic conference

    Oral presentation

  • 神戸市周辺のため池に存在する水中有機物の特性および類型化

    福森 郁哉, 平井 恵子, 鈴木 武志, 藤嶽 暢英, 大塚 紘雄

    日本土壌肥料学会2003 年度大会講演要旨集, 2003, Japanese, 日本土壌肥料学会, 神奈川, Domestic conference

    Oral presentation

  • 糸状菌の褪色作用に対する腐植の安定性

    柳 由貴子, 余田 香里, 渡辺 眞紀子, 鈴木 武志, 大塚 紘雄, 藤嶽 暢英

    日本土壌肥料学会2003 年度大会講演要旨集, 2003, Japanese, 日本土壌肥料学会, 神奈川, Domestic conference

    Oral presentation

  • Effect of phosphate and pH on humification of three plant residues with fresh volcanic ashes

    SOCCORO Atendido, 鈴木 武志, 藤嶽 暢英, 大塚 紘雄

    日本土壌肥料学会2003 年度大会講演要旨集, 2003, Japanese, 日本土壌肥料学会, 神奈川, Domestic conference

    Oral presentation

  • A 型腐植酸様物質を含む土壌改良資材の創出(第三報)-創出したA 型腐植酸様物質の化学構造特性

    鈴木 武志, 井汲 芳夫, 吉田 淳平, 藤嶽 暢英, 大塚 紘雄

    日本土壌肥料学会2003 年度大会講演要旨集, 2003, Japanese, 日本土壌肥料学会, 神奈川, Domestic conference

    Oral presentation

Association Memberships

  • 廃棄物学会

  • 日本緑化工学会

  • 日本腐植物質学会

  • 日本ペドロジー学会

  • 日本土壌肥料学会

Research Projects