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논문 기본 정보

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(University of Nigeria) (CSIR-Soil Research Institute, Ghana) (University of Nigeria) (University of Nigeria) (Kinki University, Japan)
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한국토양비료학회 한국토양비료학회 학술발표회 초록집 20th WORLD CONGRESS OF SOIL SCIENCE
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    초록·키워드

    Lowland soils in most of tropical Africa harden during the dry season, but the agronomic implications of suchhardening for sawah systemsare unknown.Sawah, an Indonesian word, as currently used in sub-Saharan Africa refers to a bund-demarcated, puddled and leveled lowland field of a high-yielding rice variety under regulated flooding and routine fertilization. Dry-season hardening of lowland soils was simulated in 2010 and 2011 and its effects, and those of water regime during rice growth, on sawah soil hydrophysical condition and rice performance were evaluated under glasshouse conditions in Nara, Japan.The soil for 2010, a sandy loam, was typical of tropical African lowland soils (total carbon, 9.07 g kg^-1), whereas that for 2011, a sandy clay loam, was typical of Japanese soils (total carbon, 33.93 g kg^-1). Both the dry-season hardened soils (DHS) and all-season moistened soils (AMS) were manually puddled and young seedlings of Japonica transplanted. Each of DHS and AMS was placed under three water regimes namely optimal (WR_o), sub-optimal (WR_s), and poor water regimes (WR_p). Plants were grown wi ... 전체 초록 보기

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