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Response of the IFE brown cultivar of cowpea to plant population during early and late planting seasons



Response of the IFE brown cultivar of cowpea to plant population during early and late planting seasons



Nigerian Journal of Botany 7: 49-54



Cowpea (Vigna unguiclata) cv. Ife Brown was grown on the flat at plant population of ca 27,700. 66,600, 111,100, 166,600 and 200,00 per hectare in May/June (early) and August/September (late) in 1990 and 1991. Plant population did not affect time to 50% flowering in both years but significantly affected the number of branches and fruits per plant, the measurement of which generally declined with increasing plant population. The number of seeds per fruit was only significantly affected by plant population in one instance out of the four plantings. Seed yield per hectare was generally influenced by plant population. A plant population of 166,600 was found to be optimum in the early season while 200,000 plants/ha may be optimum for late season planting. Late season planting yield was generally lower than the yield obtained in early plantings.

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