Field Efficacy of Virtako 40 WG (Chlorantraniliprole 20% + Thiamethoxam 20%) against Major Insect Pests of Rice

Efficacy of Virtako 40 WG is reported against brown planthopper (BPH) (Nilaparvata lugens); whitebacked planthopper (WBPH) (Sogatellafurcifera), green leafhopper (GLH) (Nephotettix virescens); leaf folder (Cnaphalocrocis medinalis) and stem borer (Scirpophagaincertulas). Two rounds of spraying of various doses of Virtako 40 WG at 10 days interval, starting from 30 days after transplanting when the above insect pests crossed Economic Threshold Level, indicated that @ 100 g ha⁻¹ it recorded the lowest incidence of BPH (0.39 tiller⁻¹), WBPH (1.26 hill⁻¹), GLH (1.77 hill⁻¹), leaf folder (4.33% damaged leaf) and stem borer (2.90% dead heart; 2.55% white ear) of rice, besides recording the highest spider and mirid populations. The untreated control recorded 7.95 BPH tiller⁻¹, 14.59 WBPH hill⁻¹, 11.66 GLH hill⁻¹, 4.23% damaged leaves and 2.90% dead heart and 2.55% white ears, respectively. Virtako 40 WG @ 100 g ha⁻¹ recorded the highest grain yield of 5.70 t ha⁻¹, as against 2.84 t ha⁻¹ in the untreated control.