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Efficacy of Aqueous Neem Extracts in the Control of Diamondback Moth, Plutella xylostella (L.) on Cabbage

Published online by Cambridge University Press:  19 September 2011

I. Javaid ,
N. Saifudine ,
L. Tombolane  and
E. Rafael
I. Javaid
Affiliation:
Instituto Nacional de Investigacao Agronomica, Caixa Postal 3658, Maputo, Mozambique
N. Saifudine
Affiliation:
Instituto Nacional de Investigacao Agronomica, Caixa Postal 3658, Maputo, Mozambique
L. Tombolane
Affiliation:
Instituto Nacional de Investigacao Agronomica, Caixa Postal 3658, Maputo, Mozambique
E. Rafael
Affiliation:
Instituto Nacional de Investigacao Agronomica, Caixa Postal 3658, Maputo, Mozambique
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Abstract

The effectiveness of aqueous neem leaf and seed extracts for the control of the diamondback moth (DBM), Plutella xylostella (Linnaeus) (Lepidoptera: Plutellidae) on cabbage was evaluated in field tests at Chokwe, Mozambique and compared with parallel dimethoate + cypermethrin treatments. All the neem treatments recorded significantly higher yield of marketable heads of cabbage and significantly better control of diamondback moth than the commonly used mixture of pyrethroids or the untreated control. The neem seed extracts provided the best control of DBM. The possibility of using neem extracts as part of an integrated pest management system for DBM control in smallholder farms is discussed.

Résumé

A Chokwe au Mozambique, des extraits en solutions aqueuses de feuilles et de fruits de nime ont étee testés pour évaluer leur efficacité de lutte contre la teigne Plutella xylostella (Lepidoptera: Plutellidae) sur le chou en champs, et ils étaient parallèlement comparés aux traitements habituels contre la teigne par utilisation de diméthoate + cyperméthrine. On a enregistré des rendements hautement significatifs en pommes commercialisables de chou pour tous les traitements aux extraits de nime, et un meilleur moyen de contrôle de la teigne par rapport au mélange courante de pyréthroïdes et au témoin absolu. L'article discute des possibilités d'utilisation des extraits de nime en tant qu'une composante du système de lutte intégrée contre la teigne, chez les petits fermiers.

Keywords

diamondback mothPlutella xylostellaneemAzadirachta indicacabbagecypermethrininsecticide resistanceMozambiqueteigne du chouPlutella xylostellanimeAzadirachta indicachoucyperméthrinrésistance aux insecticidesMozambique
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 20 , Issue 2 , June 2000 , pp. 167 - 170
Copyright
Copyright © ICIPE 2000

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References

REFERENCES

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