Vol. 11, Special Issue 7 (2022)

Author(s):
Soheli Sarkar and Ashwani Kumar

Abstract:
The present study was conducted at the Central Research Field (CRF), Department of Entomology, SHUATS, Prayagraj during Rabi 2021-2022. Seven treatments were evaluated against Lipaphis erysimi, i.e., Control (T0), Cypermethrin 25% EC (T1), Verticillium lecanii (2 x 108 spores/ml) (T2), Nisco sixer plus (T3), Neem oil 0.03% EC (T4), Beauveria bassiana 1.5% L (1 x 108 CFU/ml) (T5), Cypermethrin 25% EC + Nisco sixer plus (T6), Profenofos 40%+ Cypermethrin 25% EC (T7) were evaluated against mustard aphid (Lipaphis erysimi). Results revealed that, among the different treatments, the highest per cent population reduction of mustard aphid was recorded in Profenofos 40%+ Cypermethrin 25% EC (71.37%) followed by Cypermethrin 25% EC + Nisco sixer plus (65.08%), Cypermethrin 25% EC (59.79%), Nisco sixer plus (56.82%), Beauveria bassiana (44.10%), Verticillium lecanii (43.58%), Neem oil 0.03% EC (41.17%) was the least effective among all treatments. While, the highest yield 19.69 q/ha was obtained from the treatment Profenofos 40%+ Cypermethrin 25% EC as well as B:C ratio 1: 7.98 was obtained high from this treatment. It was followed by Cypermethrin 25% EC (1: 7.26), Cypermethrin 25% EC + Nisco sixer plus (1: 6.88), Neem oil 0.03% EC (1:5.64), Nisco sixer plus (1: 5.22) Beauveria bassiana (1:4.85), Verticillium lecanii (1: 4.62)., as compared to Control (1: 2.93).