Vol. 11, Special Issue 8 (2022)

Author(s):
Dasari Surekha, Dr. M Venkataiah, Dr. N Rama Gopala Varma and Dr. T Kiran Babu

Abstract:
A field study was conducted at ARI main farm, PJTSAU, Rajendranagar, Hyderabad during kharif 2021 to evaluate the bio-efficacy of newer insecticides and fungicides alone and in combination against leaf folder and grain discolouration in rice. Among the different chemicals tested, 5 treatments viz., T2 tetraniliprole (8.71%), T1 chlorantraniliprole (8.89%), T3 cartap hydrochloride (9.23%), T12 tetraniliprole + (tebuconazole + trifloxystrobin) (9.27%) and T11 tetraniliprole + (azoxystrobin + Difenoconazole) (9.96%) recorded lowest incidence compared to control (20.90%) and were proved to be effective against leaf folder. Whereas highest incidence was recorded in T4 (26.37%) on par with T5 (25.80%) and T6 (23.67%). While, significantly lowest per cent of discolored grains were recorded in T6, tebuconazole + trifloxystrobin (22.18%) which is on par with T12, tetraniliprole + (tebuconazole + trifloxystrobin) (23.68%) T5, azoxystrobin + difenoconazole (24.90%) and T15, cartap hydrochloride + (tebuconazole + trifloxystrobin) (24.98%). Whereas, highest per cent discolored grains were noticed in untreated control (T16) 63.40% followed by T3, cartap hydrochloride 42.20%.