Indian Journal of Entomology

The PDF file you selected should load here if your Web browser has a PDF reader plug-in installed (for example, a recent version of Adobe Acrobat Reader).

If you would like more information about how to print, save, and work with PDFs, Highwire Press provides a helpful Frequently Asked Questions about PDFs.

Alternatively, you can download the PDF file directly to your computer, from where it can be opened using a PDF reader. To download the PDF, click the Download link above.

Fullscreen Fullscreen Off


This study evaluates the field efficacy of some biopesticides i.e., azadirachtin 1%EC @ 250, 500 & 750 ml, Bacillus thuringiensis @1500, 2000 & 2500 g, Beauveria bassiana 10%SC @2000, 2250 & 2500 ml and chlorpyriphos 20EC @2500 ml (check)/ ha against the brown plant hopper Nilaparvata lugens (Stål) and white backed plant hopper, Sogatella furcifera (Horváth) in direct seeded rice. The experiment was carried out at the Punjab Agricultural University, Ludhiana and Punjab Agricultural University Regional Research Station, Gurdaspur during 2017-18. It was observed that all tested biopesticides were found significantly effective. Beauveria bassiana @2500 ml/ ha was the most effective, while the maximum costbenefit ratio was obtained with chlorpyriphos 20EC @2500 ml (standard check) followed by azadirachtin 1% EC @250 and 500 ml/ ha. Despite less cost benefits, biopesticides can be safer to environment.

Keywords

Rice, Nilaparvata lugens, Sogatella furcifera, azadirachtin, Beauveria bassiana, field efficacy, cost: benefits, chlorpyriphos
User
Notifications
Font Size