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The efficacy of pirimiphos methyl in crib storage of maize in South Western Nigeria

Published online by Cambridge University Press:  19 September 2011

M. F. Ivbijaro
M. F. Ivbijaro
Affiliation:
Department of Agricultural Extension, University of Ibadan, Ibadan, Nigeria
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Abstract

Pirimiphos methyl when sprayed at dosages of 10 and 15 p.p.m., effectively protects dehusked maize in cribs for 3 months against incipient or cross infestation by stored product insects. Longer storage would however require a reapplication of the insecticide. At 5 p.p.m., pirimiphos methyl is not a protectant against insect infestation of maize stored beyond 1 month.

As insect numbers and grain damage increased, viability of infested maize decreased. Only when grain embryo is damaged or endosperm destroyed can insect infestation prevent grain germination.

Type
Research Article
Information
International Journal of Tropical Insect Science , Volume 1 , Issue 3 , September 1981 , pp. 295 - 296
Copyright
Copyright © ICIPE 1981

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References

REFERENCES

Ivbijaro, M. F. (1978) Guide to the Construction of A Crib. Extension Guide Series No. 1. Joint Programme, University of Ibadan/Bendel State Ministry of Agriculture.Google Scholar
Lahue, D. W. (1975) Pirimiphps methyl as a short term protectant of grain against stored-product insects. J. econ. Ent. 68, 235–236.CrossRefGoogle Scholar
Lahue, D. W. (1976) Pirimiphos methyl: effect on populations of Tribolium confusum and T. castaneum in wheat. J. econ. Ent. 70, 136–137.Google Scholar
Redlinger, L. M. (1976) Pirimiphos methyl as a protectant for farmers stock peanuts. J. econ. Ent. 69, 377–379.CrossRefGoogle Scholar