Evaluation of New Molecules for Management of Stem borers on Sugarcane

Abstract

An experiment was conducted at Regional Sugarcane and Rice Research Station, Rudrur during 2011 and 2012, to assess the chemical control of sugarcane stem borers (Chilo infuscatellus and Chilo sachariphagus indicus). Seven insecticides namely, Rynaxypyr 0.4 %G, Spinosad 45 SC, Acephate 75 SP, Chloropyriphos 20 EC, Chloranthriniliprole 18.5 SC, Indoxicarb 14.5 SC, Flubendamide 480 SC and compared with untreated (Check plot) using randomized block design with three replications. Significant differences were noticed among the treatments. The lowest per cent mean cumulative incidence of early shoot borer (11.61) at 45, 60, 90 and 120 days after planting and lowest per cent intensity (1.48) and incidence (1.21) of inter nodal shoot borer was recorded in Chloranthriniliprole 18.5 SC @ 0.36 ml/l of water. Further, the same treatment recorded significantly superior cane yield of 85.05 t/ha, while the untreated control recorded 79.01 t/ha. Among the insecticides, Chloranthriniliprole 18.5 SC @ 0.36 ml/l of water proved superior in checking the stem borer infestation over rest of the insecticides tested.