Vol. 11, Special Issue 8 (2022)

Author(s):
VK Bhagat, KL Painkra, GP Painkra and PK Bhagat

Abstract:
A field experiment was conducted to evaluate the efficacy of newer insecticides i.e. Thiamethoxam 25% WG (seed treatment), carbofuron 3% CG (nursery treatment alone at 15 DAS), fipronil 0.3% GR (nursery treatment alone at 15 DAS), chlorantraniliprole 0.4% GR (nursery treatment alone at 15 DAS), carbofuron 3% CG (main field alone at 25 DAT), fipronil 0.3% GR (main field alone at 25 DAT), chlorantraniliprole 0.4% GR (main field alone at 25 DAT), Thiamethoxam 25% WG + fipronil 0.3% GR (seed treatment + main field at 25 DAT), Thiamethoxam 25% WG + chlorantraniliprole 0.4% GR (seed treatment + main field at 25 DAT), Thiamethoxam 25% WG + [cartap hydrochloride 4% + fipronil 0.5% CG] (seed treatment + main field at 25 DAT), fipronil 0.3% GR + chlorantraniliprole 0.4% GR (nursery + main field at 25 DAT), carbofuron 3% CG + [cartap hydrochloride 4% + fipronil 0.5% CG] (nursery + main field at 25 DAT) and untreated control against yellow stem borer (Scirpophaga incertulas Walker) on rice during Kharif -2021. The result revealed that the chlorantraniliprole 0.4% GR (main field alone at 25 DAT) was found to be most effective treatment with lower per cent of dead heart and white earhead (2.19 and 2.59%, respectively) followed by fipronil 0.3% GR + chlorantraniliprole 0.4 GR (2.22 and 2.97%, respectively) and thiamethoxam 25% WG + chlorantraniliprole 0.4 GR (2.98 and 3.63%, respectively). Rests of the treatments were moderately effective but significantly superior over untreated control. Whereas in untreated plot recorded maximum number of dead heart and white earhead (7.02% and 7.90%, respectively).