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Studies on the seasonal abundance and control of okra stemfly, Melanagromyza hibisci Spencer (Diptera: Agromyzidae) in India

Published online by Cambridge University Press:  19 September 2011

N. K. Krishna Kumar  and
K. Srinivasan
N. K. Krishna Kumar
Affiliation:
Department of Entomology, IIHR, Hessaraghatta Lake, Bangalore 560089, India
K. Srinivasan
Affiliation:
Department of Entomology, IIHR, Hessaraghatta Lake, Bangalore 560089, India
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Abstract

Incidence of okra stemfly, Melanagromyza hibisci Spencer in India was high (40–60%) in winter months, i.e. during October, November, December and January sowings. Mean maximum and minimum temperature that prevailed 30 days after sowing had significant negative correlation with percentage main stem damage. Carbofuran, phorate, quinalphos and aldicarb, applied at 1 kg per ha reduced damage to main stem at the seedling stage but could not control subsequent damage to petioles. Eurytoma sp., a parasitoid on M. hibisci, had a high density-dependent relationship with its host, and played a significant role in keeping it under control.

Résumé

L'influence de la mouche okra [Melanagromyza hibisci Spencer] sur les tiges des semailles pendant les mois d'hiver c'est-à-dire en octobre, novembre, décembre et janvier est ‘élevé’ de 40–60% de plantes parasitees. La température moyenne maximale et minimale qui prevant 30 jours après les semilles a montre une corrélation négative significative par rapport au pourcentage des dommages sur la tige centrale carbofuran, quinalphos, phorate et aldicarb repandus à raision d'un kilo/hectare, a reduit les dommages sur la tige centrale de la jeune poussé mais n'a en aucune influence sur ceux des pétioles. Eurytoma sp. un parasite de la mouche M. hibisci, très dépendante de son hôte, à joue un rôle significatif pour le contrôler.

Keywords

Seasonal abundanceMelanagromyza hibisciEurytoma sp.granular insecticidesQuantité saisonnièreMelanagromyza hibisciEurytoma sp.insecticides granulaires
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 6 , Issue 4 , August 1985 , pp. 533 - 536
Copyright
Copyright © ICIPE 1985

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References

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