Evaluation of Botanical - Insecticide modules against stem borer, brown planthopper and natural enemies in rice

DOI: 10.22161/ijeab.95.35

Abstract:
Field experiment was conducted at Regional Agricultural Research Station, Maruteru, West Godavari (A.P.) during fourrabi seasons of 2019-20to 2022-23 to evaluate botanical-insecticide modules against stem borer and brown planthopper. Significantly superior results were recorded in insecticides alone module, T4 (Chlorantraniliprole 0.4 G @ 1.0 g m-2, Cartap hydrochloride 50% SC @ 2.0 g l-1, Triflumezopyrim 10% SC @ 0.48 ml l-1 applied at 25, 45 and 60 DAT respectively) with 50% ROC, 33% ROC in dead hearts and white ears, respectively in case of stem borer and 94% ROC in brown planthopper population and registered the highest grain yield.Among botanical – insecticide modules, treatment, T2 (Azadirachtin 10000 ppm @ 2.0 ml l-1, Neem oil @ 10.0 ml l-1 and Triflumezopyrim 10% SC @ 0.48 ml l-1 applied at 25, 45 and 60 DAT respectively) is the best against stem borer (26% ROC in dead heart damage & 13% ROC in white ear damage) and brown planthopper (91% ROC in brown planthopper population). Further, T2 is at par with insecticides alone module (T4) in managing stem borer and BPH and recorded the grain yield (6718 kg ha-1) on par with the insecticides alone module (6824 kg ha-1).

Keywords:
botanicals, brown planthopper, insecticides, rice, yellow stem borer

Article Info:
Received: 12 Sep 2024; Received in revised form: 08 Oct 2024; Accepted: 14 Oct 2024; Available online: 20 Oct 2024

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