Combined Use of Nuclear Polyhedrosis Virus with Certain Botanicals for the Control of Helicoverpa armigera on Chickpea


Abstract

Result of field experiments on the control or Helicoverpa armigera (Hbn.) on chickpea (Cicer arietinum L.) with nuclear polyhedrosls virus @ 250 larval equivalents/ha in combination with 10 per cent aqueous extract or leaves or Vitex negundo, Prosopis juliflora, Tagetus patula and Argemone mexicana showed that the botanicals did not increase tbe efficacy of the virus in reducing the larval population. However, a combination of NPV + V. negundo was significantly more effective than virus alone in reducing the damage to flowers and pods. All the botanicals when combined with the virus recorded significantly more number of healthy pods than virus alone. But NPV + V. neguntlo showed higher yield of grain than NPV alone.

Keywords

Helicoverpa armigera, Nuclear Polyhedrosis Virus, Chickpea, Vitex negundo, Prosopis juliflora, Tagetus patula, Argemone mexicana.

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