Stable carbon isotope ratios of water-extractable organic carbon affected by application of rice straw and rice straw compost during a long-term rice experiment in Yamagata, Japan
Nguyen-Sy, Toan, Cheng, Weiguo, Kimani, Samuel Munyaka, Shiono, Hiroyuki, Sugawara, Reo, Tawaraya, Keitaro, Watanabe, Toru, Kumagai, Katsumi
Published in Soil science and plant nutrition (Tokyo) (02.01.2020)
Published in Soil science and plant nutrition (Tokyo) (02.01.2020)
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Changes in the soil C and N contents, C decomposition and N mineralization potentials in a rice paddy after long-term application of inorganic fertilizers and organic matter
Cheng, Weiguo, Padre, Agnes T., Sato, Chizuru, Shiono, Hiroyuki, Hattori, Satoshi, Kajihara, Akihiko, Aoyama, Masakazu, Tawaraya, Keitaro, Kumagai, Katsumi
Published in Soil science and plant nutrition (Tokyo) (03.03.2016)
Published in Soil science and plant nutrition (Tokyo) (03.03.2016)
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Long-term application of fused magnesium phosphate and calcium silicate change soil chemical properties, C decomposition and N mineralization in a single rice paddy field of Northeastern Japan
Tang, Shuirong, Nguyen-Sy, Toan, Cheng, Weiguo, Sato, Chizuru, Tawaraya, Keitaro, Shiono, Hiroyuki, Kumagai, Katsumi
Published in Soil science and plant nutrition (Tokyo) (02.01.2022)
Published in Soil science and plant nutrition (Tokyo) (02.01.2022)
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Changes in the pH, EC, available P, SOC and TN stocks in a single rice paddy after long-term application of inorganic fertilizers and organic matters in a cold temperate region of Japan
Cheng, Weiguo, Padre, Agnes T., Shiono, Hiroyuki, Sato, Chizuru, Nguyen-Sy, Toan, Tawaraya, Keitaro, Kumagai, Katsumi
Published in Journal of soils and sediments (01.07.2017)
Published in Journal of soils and sediments (01.07.2017)
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Evaluation of silicon availability in fertilizers by water-resin extraction method and adequate recommendations for Si application based on available Si in fertilizers and soils
Sato, Y.(Yamagata-ken. Agricultural Experiment Station (Japan)), Kumagai, K, Nakagawa, F, Nagasawa, K
Published in Nippon dojō hiryōgaku zasshi (05.10.2005)
Published in Nippon dojō hiryōgaku zasshi (05.10.2005)
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Relationship between values of soil available silicic acid measured by different phosphate buffer extraction methods
Kumagai, K.(Yamagata-ken. Agricultural Experiment Station (Japan)), Sato, Y, Nakagawa, F, Nagasawa, K
Published in Nippon dojō hiryōgaku zasshi (05.06.2005)
Published in Nippon dojō hiryōgaku zasshi (05.06.2005)
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Effect of water management and rice plant growth on methane emission from rice paddy fields in a cold district of Japan
Kumagai, K. (Yamagata-ken. Agricultural Experiment Station (Japan)), Konno, Y, Togashi, M
Published in Nippon dojō hiryōgaku zasshi (05.10.2000)
Published in Nippon dojō hiryōgaku zasshi (05.10.2000)
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Paddy rice cultivation method by a coated fertilizer and animal manure compost that 50% reduced a quantity of use of nitrogen fertilizer
Nakagawa, F. (Yamagata-ken. Agricultural Experiment Station (Japan)), Kumagai, K, Konno, Y, Yamaguchi, K
Published in Nippon dojō hiryōgaku zasshi (05.08.2001)
Published in Nippon dojō hiryōgaku zasshi (05.08.2001)
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Influence of soil moisture content on methane production
Kumagai, K. (Yamagata-ken. Agricultural Experiment Station (Japan)), Konno, Y
Published in Nippon dojō hiryōgaku zasshi (05.10.1998)
Published in Nippon dojō hiryōgaku zasshi (05.10.1998)
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Methane emission from rice paddy fields after upland farming
Kumagai, K. (Yamagata-ken. Agricultural Experiment Station (Japan)), Konno, Y
Published in Nippon dojō hiryōgaku zasshi (05.08.1998)
Published in Nippon dojō hiryōgaku zasshi (05.08.1998)
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Nitrogen release property of coated urea applied to upland field in cool region, and its utilization to wheat and soybean
Togashi, M. (Yamagata-ken. Agricultural Experiment Station (Japan)), Kumagai, K, Nakano, K, Ueno, M, Tanaka, N
Published in Nippon dojō hiryōgaku zasshi (05.06.1995)
Published in Nippon dojō hiryōgaku zasshi (05.06.1995)
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