Irrigation And Drainage Research Project Report No.43

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Date
1984
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Ministry Of Agriculture
Abstract
This report endeavours to address the causative factors of low rice yields at Wamumu Extension, Unit W7 in MWea Irrigation Settlement (MIS). Rice production in the extension ~dates back to the short rains of 1977 from which time the problem of low yields has been of concern to the MIS management and, most important, to the farmers.Right from the beginning soil analysis showed that the soils were low in phosphorus and potassium and recommendations to apply these fertilizers were issued. However, the probleo persisted, although moderate responses to phosphorus and nitrogen fertilizers were realized and none to potassium fertilization. During investigations into the causative factors of rice yields variations in the MWea Irrigation Settlement it was found that "soils of high permeability were associated with low rice yields (Njihia, 1984).
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