Monitoring of pod borer, Helicoverpa armigera (Hubner) on chickpea crop through pheromone traps at Kawardha, Chhattisgarh

Abstract

The present investigation entitled “Monitoring of pod borer, Helicoverpa armigera Hubner on chickpea crop through pheromone traps at Kawardha, Chhattisgarh” was conducted during rabi 2016-17 and 2017-18 at Sant Kabir College of Agriculture & Research Station, Kabirdham, Chhattisgarh. Five traps were placed, one trap being positioned in the Centre of the crop and four traps were positioned 20 meters from the edge of each corner side of the crop. The traps were labelled as north, east, south, west and centre traps. The results revealed with mean pooled data, the activity of male moth of H. armigera was noticed during 51st standard week (17-23 Dec.) with 0.49 moths/trap/week which increased gradually and reached its peak (43.45 moths/trap/week) during 6th standard week (5-11 Feb.) and started decreasing from 5th standard week (29-04 Feb.) and reached to a minimum of 1.73 moths/trap/week in 11th standard week (12-19 March). The larval population was minimum in 52nd standard week (24-31 Dec.) with 0.08 larvae/mrl and gradually reached its peak during 6th standard week (5-11 Feb.) with 5.78 larvae/mrl.