Bio-efficacy of Different Botanical Extracts on Aphis craccivora in Black Gram
Asian Research Journal of Agriculture · pp. 282–287 · Published 26 Sep 2024
10.9734/arja/2024/v17i4526Abstract
The studies on “Bio-efficacy of botanical extracts against Aphis craccivora in black gram was carried out in the Department of Entomology, Faculty of Agriculture, Annamalai University, Chidambaram, Tamil Nadu. The black gram aphid, Aphis craccivora Koch. (Hemiptera: Aphididae), is one of the major devastating and cosmopolitan-sucking pests in Blackgram. Bio-efficacy of Pongamia pinnata leaf extract 5 % and 10 %, Annona squamosa leaf extract 5% and 10%, Andrographis panniculata leaf extract 5% and 10% and Catharanthus roseus leaf extract 5% and 10% with Azadirachtin as a standard check it was evaluated on 3rd instar nymphs of Aphis craccivora on topical bioassay and feeding bioassay. In which C. roseus leaf extracts of 5% and 10% has shown the highest mortality rate on par with Azadirachtin 5% which is kept as a standard check.
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