Vol. 10, Issue 8 (2021)

Author(s):
G Dhivya and K Kumar

Abstract:
Field trials were conducted during kharif 2018 and rabi 2018-19 with rice variety ADT 45 to determine the bioefficacy of botanicals and insecticides against the stem borer, Scirpophaga incertulas. Results revealed that among all the foliar application, treatment with Rynaxypyr 20 SC @ 150 ml/ha recorded the least percent white ear or dead heart per hill (4.90 to 6.53 and 2.09 to 10.79 per cent/hill) followed by camphor oil @ 1000 ml/ha (4.73 to 6.63 and 2.92 to 11.07 per cent/hill) and superior than the other treatments in field experiment I and II. The effect of these applications was also resulted on the yield attributes, with highest grain yield of 3.43 and 6.64 t/ha was observed in Rynaxypyr 20 SC @ 150 ml/ha treated plot followed by dinotefuran 20 SG @ 200 g/ha (2.50 and 5.82 t/ha) in I and II field experiment.