Abstract
Microbial biomass N was measured in 16 paddy soils, comprising three soil types, in laboratory incubation and under field conditions. The aim was to determine the effects of organic matter application on microbial biomass N in the soils and N uptake by rice. Biomass N was increased by continuous application of organic matter such as rice straw, cow manure compost and dried cow manure, but remained fairly constant throughout the incubation, in contrast to N mineralization. Nitrogen uptake by rice was proportional to biomass N, although the ratio of N uptake/biomass N varied according to soil type and was decreased by organic matter application.
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© 1997 Kluwer Academic Publishers
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Inubushi, K., Shibahara, F., Hasegawa, K., Yamamuro, S. (1997). Effects of added organic matter on microbial biomass nitrogen dynamics and plant uptake in paddy soils. In: Ando, T., Fujita, K., Mae, T., Matsumoto, H., Mori, S., Sekiya, J. (eds) Plant Nutrition for Sustainable Food Production and Environment. Developments in Plant and Soil Sciences, vol 78. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0047-9_252
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DOI: https://doi.org/10.1007/978-94-009-0047-9_252
Publisher Name: Springer, Dordrecht
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