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Residual Effects of Fertilizer and Manure on Dry Beans Phaseolus Vulgaris
(1990) Mbugua, G.W.
Trials on residueal effects of DAP and rock phosphate fertilizers, poultry manure and DAP-poultry manure combination on dry beans were conducted at N.HoRoC., Thika, and in Kandara, Muranga District :in 1985-1986. In 1986,' beans crop grown on previously DAP_fertili~ed and manured plots was better established, more vigorous and yielded higher than where no fertilizer or manure was applied. DAP, poultry manure and DAP-poultry manure combination gave similar yield improvement :indicating that these nutrient sources could be used as alternatives depending on availability. Rock phosphate did not give any yield improvement.