Evaluation of the efficacy of relative bio-pesticide and insecticides against barley aphid

Abstract

The bio-efficacy of the treatments evaluated against aphid on barley crop showed that lowest population of 2.20, 2.80, 5.73, 12.13, 12.20, 25.70, 30.13 / shoot. was recorded in flubendiamide 480 SC @ 250 ml ha-1, imidacloprid 17.8 SL @ 100 ml ha-1, acetamiprid 20 SP @ 100 gmha-1, chlorantraniliprole 18.5 SC @ 100 gm.ha-1, Metarhizium anisopliae 1×108 CFU/[email protected] g. lit-1, Beauveria bassiana 1×109 CFU/[email protected] g. lit-1 and Azadirachtin 1500 ppm (0.15%EC)3.0 ml.lit-1 respectively and were found statistically at par in their efficacy. The highest aphid population was recorded in untreated control (61.60 Aphids/shoot). The data of seed yield revealed that maximum yield of(50.38 q ha-1)was recorded in the plots treated with in flubendiamide @ 250 mlha-1 followed by imidacloprid @ 100 mlha-1, & acetamiprid @ 100 gmha-1, which gave (50.10 q ha-1& 49.21q ha-1) seed yield, respectively and all these found statistically at pareach other and proved significantly superior over rest of the treatments.