The dose of NPV used for the control of fruit borer Helicoverpa armigera in chick pea is:

Correct option is B

NPV (Nuclear Polyhedrosis Virus) is a biological insecticide used to control lepidopteran pests like Helicoverpa armigera, a major fruit and pod borer in chickpea.
· The unit LE stands for Larval Equivalent, a standard measure of NPV potency.
· For effective control of Helicoverpa armigera in chickpea, the recommended field dose is typically:

· It is best applied during the early larval stages and ideally in the evening hours to improve virus persistence.
�� Therefore, the correct answer is (b) 250 LE/ha.