Efficacy of botanical extracts and a chemical pesticide against Helicoverpa armigera infesting oats
Ritesh Kumar, Ishtiyaq Ahad, Sheikh Aafreen Rehman and Stanzin Dorjey
An experiment was carried out in the field at the Faculty of Agriculture, Wadura, North Kashmir during 2015-16 under free choice conditions to evaluate the efficacy of Green leaf extracts against Helicoverpa armigera on oats crop. The results revealed that dichlorvos showed significant results in an increase in pest mortality 28.52, 40.00, 51.33 and 61.71 per cent after 1, 3, 5 and 7 days after treatment (DAT), respectively with 92.53 per cent increase in the mortality over control. This was followed by NSKE 22.34, 35.20, 40.43 and 33.65 per cent after 1, 3, 5 and 7 DAS, respectively with 89.69 per cent increase in the mortality over control. Among the botanicals NSKE was found to be most effective followed by Artemisia annua however, it was found least in case of green leaf extract of walnut.