Vol. 11, Special Issue 9 (2022)

Author(s):
Shubhra Singh, Himani Gautam, Jatiender Kumar Dubey, Sapna Katna, Ajay Sharma, Gaganpreet Singh Brar and Nisha Devi

Abstract:
Bioefficacy of some insecticides was studied against aphids on bell pepper crop in two consecutive years 2019 and 2020 in the experimental field of Department of Entomology, Dr. Yashwant Singh Parmar University of Horticulture and Forestry Nauni, Solan. The study comprised of various treatments viz., fenazaquin, deltamethrin, dimethoate, ethion and fenpropathrin at less than recommended (x), recommended (X) and double the recommended dose (2X). The results of this study revealed that among all the applied treatments dimethoate @ 400 g a.i. ha^-1 (T₉) was found most effective during both the years followed by fenpropathrin @ 150 g a.i. ha^-1 (T₁₅). However, deltamethrin applied @ 7 g a.i. ha^-1 was the least effective treatment against aphids on bell pepper crop. The percent reduction value in aphid population in the plots treated with dimethoate at the recommended dose @ 200 g a.i. ha^-1 (T₈) was found statistically at par with T_9. Similarly, the percent reduction value in aphid population in the plots treated with fenpropathrin at the recommended dose @ 75 g a.i. ha^-1 (T₁₄) was found statistically at par with T_15.