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Studies on the Seasonal Abundance and Control of Okra Stemfly, Melanagromyza Hibisci Spencer (Diptera: Agromyzidae) in India

  • N. K. Krishna Kumar
  • K. Srinivasan
Research Article

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.

Key Words

Seasonal abundance Melanagromyza hibisci Eurytoma sp. granular insecticides 

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 parasitées. 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 répandus à raision d’un kilo/hectare, a réduit 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.

Mots Clefs

Quantité saisonnière Melanagromyza hibisci Eurytoma sp. insecticides granulaires 

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Copyright information

© ICIPE 1985

Authors and Affiliations

  • N. K. Krishna Kumar
    • 1
  • K. Srinivasan
    • 1
  1. 1.Department of EntomologyIIHRBangaloreIndia

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