Field Efficacy of Nuclear Polyhedrosis Virus of Adisura atkinsoni Moore on Field Beans

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Authors

  • Department of Entomology and Nematology, Indian Institute of Horticultural Research, Bangalore 560 089 ,IN

DOI:

https://doi.org/10.18311/jbc/1987/15383

Keywords:

Adisura atkinsoni NPV, Biological Control, NPV - Insecticide Combination, Field Efficacy.

Abstract

Application of nuclear polyhedrosis virus of Adisura atkinsoni Moore in field bean @ 125 LE/ha along with endosulfan 0.035% twice at 15 days interval significantly reduced the larval population. The virus alone at 250 LE/ha also could reduce the larval population significantly inside the pods but the larval population on the plants (outside the pod) did not vary significantly from that of control. NPV 250 LE/ha + endosulfan at 0.035% as well as endosulfan 0.07% significantly reduced the pod damage and increased the yield when compared to control. Considering the feeding behaviour of A. atkinsoni before and after the application of virus, the importance of assessing the larval infestation inside the pod instead of outside and assessing the yield on seed basis instead of pod basis, is discussed.