• Abul Faiz
• Dr. Rezina Ahmed

Abstract : This study was carried out to determine the insecticidal effect of three plant leaf extract as a part of utilization of bio- resources as bio-pesticide to minimize the chemical insecticidal hazard against four selected insect pests on black gram. The experiment was done in a random block design in a black gram field without any interference. The aqueous leaf extract of Ipomea fistulosa , Annona reticulata and Polygonum hydropiper were prepared according to traditional knowledge and tested for its pesticidal (anti-feedant) activity against the insect pests such as Aphids (Aphis craccivora), Apion clavipes, Maruca testulalis and leaf weber (Omiodes indicata) in a field . From the experiment it is found that both anti-feedant activity and lethal effect of the extracts on the insects were significant and the results indicated that Ipomea fistulosa and Annona reticulata was more effective. This study may lead to further investigation and in the development of eco-friendly pest management techniques.

Annona reticulata, bio-intensive pest management, bio-resource, black gram, insect pests, Ipomea fistulosa, leaf extract, Polygonum hydropiper.

"Bio-intensive Management of Insect Pests on Blackgram", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.400-406, April-2019, Available :http://www.jetir.org/papers/JETIR1904561.pdf

"Bio-intensive Management of Insect Pests on Blackgram", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp400-406, April-2019, Available at : http://www.jetir.org/papers/JETIR1904561.pdf