Field evaluation of newer insecticide molecules and botanicals against pod borers of Red gram

DOI: 10.5958/0976-0571.2015.00048.X    | Article Id: LR-3160 | Page : 260-267
Citation :- Field evaluation of newer insecticide molecules and botanicals against pod borers of Red gram.Legume Research-An International Journal.2015.(38):260-267
S. Sambathkumar*, C. Durairaj, N. Ganapathy and S. Mohankumar sambathagritech@gmail.com
Address : Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore- 641 003, India.

Abstract

Field experiments were conducted during Kharif 2012 to evaluate the efficacy of newer insecticides and botanicals followed by Indoxacarb against pod borers infesting redgram variety CO 6. Among newer insecticides, the significant least incidence of Maruca vitrata was recorded in indoxacarb 15.8 EC @ 75 g a.i./ha (3.1 webbings/ 10 plants) and chlorantraniliprole 18.5 SC 30 g a.i./ha (3.9 webbings/ 10 plants). The minimum larval population of Helicoverpa armigera was recorded in chlorantraniliprole 18.5 SC @ 30 g a.i./ha (9.5 nos./ 10 plants) and indoxacarb 15.8 EC @ 73g a.i/ha (10.3 nos./ 10 plants). Low per cent podfly grain damage (11.7) was recorded in chlorantraniliprole 18.5 SC @ 30 g a.i./ha with the highest yield of 892.2 kg/ha in indoxacarb 15.8 EC @ 75g a.i/ha. Among botanicals and combination of botanicals and indoxacarb spray, least number of Maruca webbings, minimum Helicoverpa larval population (18.3), Helicoverpa pod damage (16.3%) were recorded in Neem soap (10g) followed by indoxacarb (0.5ml) (5.7/ 10 plants) with maximum yield of 732.9 kg/ha in Pongamia soap (10g) followed by indoxacarb (0.5ml).

Keywords

Botanicals Helicoverpa armigera Maruca vitrata Newer insecticides Redgram.

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