EFFICACY OF DIFFERENT INSECTICIDES AGAINST THE GRAM POD BORER (HELICOVERPA ARMIGERA) ON CHICKPEA (CICER ARIETINUM)

摘要

Five insecticides chlorpyriphos 20EC, quinalphos 25EC, monocrotophos 36S1 @ 0.5 kg a.i./ ha, Fenvalerale 20EC @ 0.05 kg.a.i./ha and carbaryl 50WP @ 1.0 kg a.i./ha were evaluated against the gram pod borer (Helicoverpa armigera) on chickpea crop. Threesprays were given first at pod initiation and other two sprays at 15 days intervals after the first spray. All the above cited treatments resulted in significant reduction of damaged pods due to H. armigera (10.74 to 25.20 % damaged pods) as compared to 38.50 % damaged pods in the untreated plots. Out of these insecticides Fenvalerate was found to be the most effective and cheapest against H. armigera.