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Effects of Monocrotophos on Insect Damage and Yield of Cowpea (Vigna unguiculata) in Southern Nigeria

Published online by Cambridge University Press:  03 October 2008

S. O. Dina
S. O. Dina
Affiliation:
National Cereals Research Institute, Moor Plantation, PMB 5042, Ibadan, Nigeria
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Summary

The effect of one, two or three applications of monocrotophos at 1120 g ai/ha at weekly intervals was determined on cowpea var. Ife Brown. All regimes were equally effective in grain production in early 1974 but spray applications 35 and 42 days after planting gave the best result in the late crop. Grain production from two applications was not significantly different from three applications in 1975. The control plots in the late season of both years failed, due to moisture stress and lack of pest control measures. It is considered that two sprays at flowering is adequate to forestall a crop failure in this variety.

Type
Research Article
Information
Experimental Agriculture , Volume 13 , Issue 2 , April 1977 , pp. 155 - 159
Copyright
Copyright © Cambridge University Press 1977

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References

REFERENCES

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