Food Crops
Permanent URI for this collectionhttp://hdl.handle.net/0/14
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Browsing Food Crops by Subject "Acrisols"
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Item Effects of N fertilisation, bean spatial arrangements and residue on maize performance in a semi-arid area of Kenya(1997) Keter, J.K.A.; Chui, J.N.In Kenya, two sites Kirnutwa and Masii with dystric Nitisol and acrisol, respectively, were used to study the influence of four N rates (0, 25, 50 and 100 kg N ha·I), two spatial arrangements (same and alternate rows) of beans and bean residue on maize performance. Both soil types had low levels of, and applied N significantly increased dry matter yields and seed yields in almost all seasons. The N rate of 25 kg N ha·1 was not adequate for growth, development and seed yield while the effect of rates of 50 and 100 kg N ha· 1 on seed yields did not differ significantly. Yield response to N by inter-cropped maize less than that of sole maize. Higher rainfall resulted in more growth responses to N. Bean spatial arrangement~ altered N requirement by maize for maximum seed yield while bean residue generally improved the effect of applied N on maize performance. Intercropping significantly delayed maize development and reduced dry matter yields, growth and ear weight though not in all seasons. Seed yields were significantly reduced by intercropping in some seasons while in others, they were comparable to that of sole cropping. Thus, in some seasons, total grain yields and land equivalent ratios for the intercropping systems were higher than those of sole cropping. Maize did not perform or respond uniformly to bean spatial arrangements across the sites.
