The Effects of Manure, Lime and P Fertilizer on N Uptake and Yields of Soybean ( Glycine max (L.) Merrill) in the Central Highlands of Kenya
Mugwe, J. N.
Danga, B. O.
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Soybean (Glycine max (L.)) is one of the most important legume crops being introduced in the CHK (Central Highlands of Kenya) expected to increase yields. However, low levels of soil N (nitrogen) and other plant nutrients and soil acidity are seen as the major causes impairing goal achievement. To evaluate the influence of manure, lime, P (phosphorus) fertilizer and their combination on N uptake and soybean performance, an experiment was conducted in Embu ATC (Agricultural Training College) comprising 9 treatments, arranged in a Randomized Complete Block Design with 4 replicates in plots of 4 m × 4.5 m. The study included manure (0, 5 and 10 t•ha-1), lime (0 and 2 t•ha-1) and P fertilizer (0, 30 and 60 kg•P•ha-1). The treatments significantly influenced N uptake and soybean yields. Both parameters responded well to application of manure both alone or combined to lime and TSP (triple super phosphate). From these it was concluded that organic and inorganic resources have potential to enhance N uptake and soybean and other crops yields in CHK.