Vol. 12, Issue 9 (2023)

Author(s):
Shubham Kale, NC Mandawi, Hemlata Sahu and Kusum Thakur

Abstract:
When used in integrated pest management programmes, rotational applications, or in conjunction with other insecticides, botanical pesticides can significantly reduce the use of conventional pesticides. This may result in a reduction in the total amount of pesticides used while potentially mitigating or delaying the emergence of pest populations with resistance. During the Kharif season of 2022, the experiment was carried out at Research and Instructional Farm, SGCARS Jagdalpur. In the evaluation of different botanical insecticides, three sprays of different insecticides at 25, 45 and 60 DAT were applied and the results revealed that T₁ (Combination of Neemazal 1% EC @ 2 ml L^-1, Eucalyptus oil @ 2 ml L^-1 and Cartap hydrochloride 50% SC @ 2 g L^-1) was most effective combination with 45.75% and 48.54% ROC respectively for gall midge and stem borer infestation. This treatment was superior to T₂ (Neemazal 1% EC @ 2 ml L^-1, Neemoil @ 10 ml L^-1 and Triflumezopyrim 10% SC @ 0.48 ml L^-1) having 33.57% and 36.12% ROC and T₃ (Neem baan (Azadirachtin 10000 ppm) @ 2 ml L^-1, Karanj oil @ 10 ml L^-1 and Fipronil 0.3 GR @ 2.5 g/m²) with 29.44% and 30.93% ROC respectively for gall midge and stem borer infestation. The least effective combination was T₄ (Neemazal 1% EC @ 2 ml L^-1, Eucalyptus oil @ 2 ml L^-1 and Neemoil @ 10 ml L^-1) with 29.44% and 30.93% ROC for gall midge and stem borer, respectively but it was superior to T₆ (untreated control). The check treatment T₅ (Chlorantraniliprole 0.4G @ 1 g/m², Cartap hydrochloride 50% SC @ 2 g L^-1 and Triflumezopyrim 10% SC @ 0.48 ml L^-1) had the highest ROC of 69.65% and 72.56% ROC for gall midge and stem borer, respectively.