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Effect of fertilizer nitrogen, phosphorus and potassium on yield of corn, Zea mays var. Pioneer 306



Effect of fertilizer nitrogen, phosphorus and potassium on yield of corn, Zea mays var. Pioneer 306



Proceedings of the Caribbean Food Crops Society 7: 334-338



In field trials in the 1968 rainy season, maize Pioneer 306, grown on Onverwagt silty clay, was either unfertilized or given all combinations of 0, 51 or 100 kg N, 0, 13 or 26 kg P and O, 56 or 112 kg K/ha. Increase in n from 0 to 100 kg/ha increased the yield of husked cobs by 3.12 t/ha, with about 60% of the increase being attributable to the first 50 kg N/ha. There was a comparatively small but significant linear response to P, and 40% of the increase was due to the first 13 kg P/ha.

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