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- W2022161354 abstract "In the typical toposequence (upland, footslope and bottomland) of West Africa's vast interior plains and plateaus, research on rice-based cropping systems has largely been confined to upland and bottomland. This article deals with potential and actual rice production on a coarse sandy footslope with temporarily shallow groundwater in central Ivory Coast. Measured soil physical and hydrological properties were used to simulate the response of upland rice to water supply at different positions of the footslope. Simulation gave a potential production (water and nutrients not limiting) of 5500 kg/ ha and a water-limited yield (nutrients not limiting) of 4950–5500 kg/ha. The beneficial effects of shallow groundwater during the cropping period in overcoming mid-season dry spells are confined to the central and lower parts of the footslope. Measured rice yields were 750 kg/ha (unfertilized) and 1620 kg/ha (NPK fertilizer). Next to a low inherent availability of nitrogen at the research site (0.3 g/kg ), N use efficiency of the rice crop was low (52 kg grain/kg N), and also N fertilizer recovery was low (18%), in spite of its application in three splits. It is argued that leaching and denitrification contributed considerably to losses of N from the cropped land, partly as a result of prolonged humid conditions during the growing period." @default.
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- W2022161354 date "1993-11-01" @default.
- W2022161354 modified "2023-10-18" @default.
- W2022161354 title "Response of upland rice to soil and hydrological conditions on a footslope in central ivory coast" @default.
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- W2022161354 doi "https://doi.org/10.1016/0016-7061(93)90061-o" @default.
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