The effects of plant spacings on cowpea, Vigna unguiculata Walps, insect pests and yields in two sites in Nigeria
1991
Alghali, A.M. (International Institute For Tropical Agriculture, IITA, Ibadan (Nigeria))
An experiment to examine the effects of different plant spacing on cowpea insect numbers and yields was undertaken at two sites in Nigeria. Two varieties, viz. Tvx 3236 and IT84E-1-108 were planted under field conditions at three different plant spacings. Plant spacing did not affect the number of Ootheca beetles, pod-borers, flower thrips and pod sucking bugs. Yield differences were not significant for the spacing regimes and there were no interactions between spacings and insect numbers for yields. Thus, plant spacing may not be an important control tactic in the management of the key cowpea insect pests in Nigeria
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