Effects of Monocrotophos on Insect Damage and Yield of Cowpea (Vigna unguiculata) in Southern Nigeria
- 1 January 1977
- journal article
- research article
- Published by Cambridge University Press (CUP) in Experimental Agriculture
- Vol. 13 (2) , 155-159
- https://doi.org/10.1017/s0014479700007754
Abstract
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.This publication has 2 references indexed in Scilit:
- Field Tests with Insecticides to Control Maruca testulalis and Other Pod-boring Insects of Cowpea in Southern NigeriaJournal of Economic Entomology, 1976
- Observations on the bionomics of Laspeyresia ptychora Meyr. (Lepidoptera, Eucosmidae) infesting cowpea in NigeriaBulletin of Entomological Research, 1965