Effect of different Biopesticides and insecticides treatments on population of natural enemies (coccinelids and spider) in Chickpea (Cicer Arientinum)

Abstract

The present investigation was undertaken to find out suitable and low cost substitute for the management of Helicoverpa armigera (Hubner) on chickpea by using microbials and botanicals. The field trial was laid out in the premises of Insectary, Entomology Section, College of Agriculture, Nagpur, during the rabi season of 2013-14. The experiment was laid out in randomized block design (RBD) with three replications and eight treatments including control (water spray). The observations were recorded on average per cent pod damage caused by Helicoverpa armigera (Hubner) and average grain yield of chickpea. Cumulative effect of various treatment on natural enemies i.e. coccinelids and spiders was studied after 14 days after spraying revealed that the treatment control (water spray) invited highest population of natural enemies to the tune of 1.08 no./plant.