Vol. 11, Issue 11 (2022)

Author(s):
Sachin Arya, Gaje Singh, DV Singh, Rajendra Singh, Prashant Mishra, Atar Singh, PK Patel and Narne Kavya

Abstract:
The present investigation was carried out on insect pests complex associate with rapseed mustard during Rabi, 2020-21 and 2021-22 at Crop Research Center, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut (U. P.) 250110. The occurrence of four major insects viz. mustard sawfly (Athalia proxima), mustard aphid (Lipaphis erysimi), cabbage butterfly (Pieris brassicae) and painted bug (Bagrada hilaris) caused more damage at different crop growth stage. The maximum incidence of sawfly was recorded during 1st SMW (4.90 grubs/plant), when the crop at vegetative stage, whereas, the aphid population was highest at 7th MSW (101.90 aphid/10 cm terminal twig/plant). The maximum intensity of cabbage butterfly was recorded in 8th SMV (4.60 larvae/plant) and the highest incidence of the painted bug was noticed in the 11th SMV (4.25 bugs/plant). The two predators viz. ladybird beetle and syrphid fly was recorded during the crop period with maximum population of 6.20 grubs/plants and 3.90 grubs/plant at 7th and 8th MSW, respectively.