Vol. 10, Special Issue 12 (2021)

Author(s):
SS Ghodke, DG More, DN Fand, SH Gore and DV Bhokse

Abstract:
Investigation was carried out for work out the economic threshold levels of girdle beetle and stem fly on soybean at Department of Agricultural Entomology, College of Agriculture, Latur (Maharashtra) India during kharif 2019. An experiment was conducted to work out the gain threshold, economic injury level, actual economic injury level and economic threshold levels were worked out for girdle beetle and stem fly infesting soybean. The different treatments are constituted based on number of sprays which gave different exposure period to the pests to feed on the soybean crop. The final ETL was determined on the basis of equality of management cost and revenue of soybean yield which was saved from pest damage. For experiment purpose the insecticide used was Chlorantraniliprole 18.5% SC. Based on the equality of management cost and revenue of soybean yield which was saved from pest damage, 12.36 per cent infested plants by girdle beetle was decided as the ETL level. While, 14.29 per cent stem tunneling was decided as the ETL level for stem fly infestation.