Vol. 11, Special Issue 12 (2022)

Author(s):
RK Kalyan and Deepika Kalyan

Abstract:
The experiment was conducted to evaluate the bio efficacy of different doses of Cyantraniliprole 7.3% w/w + Diafenthiuron 36.4% w/w SC as foliar spray against pest complex of okra at Agricultural Research Station- Banswara (Rajasthan) during the year 2019-20 and 2020-21. The trial was laid out in randomized block design (RBD) with ten treatments i.e. Cyantraniliprole 7.3% w/w + Diafenthiuron 36.4% w/w SC @ 500, 625 & 700 ml; Cyantraniliprole 10.26% OD @ 600 ml; Diafenthiuron 50% WP @ 600g; Pyriproxyfen 5% + Fenpropathrin 15% EC @ 750 ml; Fenpropathrin 30% EC @ 340 ml; Tolfenpyrad 15% EC @ 1000 ml ha^-1; untreated check and Cyantraniliprole 7.3% w/w + Diafenthiuron 36.4% w/w SC @ 1500 ml ha^-1 (only for phytotoxicity test) replicated three times. The observations recorded at different days after sprays of insecticides depicted the lowest mean population of jassids (2.67 & 2.39/3 leaves/plant), whiteflies (3.27 & 2.89/3 leaves/plant) during the year 2019-20 and 2020-21, respectively) in Cyantraniliprole 7.3% w/w + Diafenthiuron 36.4% w/w SC @ 700 ml ha^-1 with overall highest reduction during the year 2019-20 and 2020-21 over control. It was followed by Cyantraniliprole 7.3% w/w + Diafenthiuron 36.4% w/w SC @ 625 ml ha^-1. The minimum larval population (Helicoverpa armigera) and fruit damage (Erias) was also recorded in Cyantraniliprole 7.3% w/w + Diafenthiuron 36.4% w/w SC @ 700 ml ha^-1 with highest fruit yield during both the years, followed by Cyantraniliprole 7.3% w/w + Diafenthiuron 36.4% w/w SC @ 625 ml ha^-1.