1Department of Entomology, Agricultural College, Bapatla,522101, Andhra Pradesh, India, Acharya N G Ranga Agricultural University, Lam, Guntur 522034, Andhra Pradesh, India
2Department of Plant Pathology, Agricultural College, Bapatla, 522101, Andhra Pradesh, India, Acharya N G Ranga Agricultural University, Lam, Guntur 522034, Andhra Pradesh, India
*Email: ddchowdary3303@gmail.com (corresponding author): ORCID ID 0009-0009-3570-612X
Online published on 1 April, 2025.
A field experiment was carried out during kharif 2020, at the Agricultural College Farm, Bapatla to evaluate the efficacy of some insecticides in combination with neem against rice planthoppers in direct seeded rice crop. The results showed that triflumezopyrim 10.6SC @ 25g a.i. ha-1 was the most effective treatment against both brown planthopper Nilaparvata lugens (Stål) and white backed planthopper Sogatella furcifera (Horváth) with 73.61 and 77.69% reductions over untreated control, respectively at 5 DAT. The other effective treatments were dinotefuran 20SG @ 40 g a.i. ha-1 and pymetrozine 50WG @ 150 g a.i. ha-1 with 70.14 and 66.44% reduction of N. lugens and 71.89 and 69.66% reduction of S. furcifera, respectively over untreated control at 5 DAT. Neem formulation 1500 ppm revealed the lowest efficacy with 34.95 and 36.19% reduction of N. lugens and S. furcifera over the untreated control at 5 DAT.
Direct seeded rice (DSR), Nilaparvata lugens, Sogatella furcifera, Insecticides, Neem formulation, Triflumezopyrim, Dinotefuran, Pymetrozine, Efficacy, Incidence, Population reduction
