Vol. 12 (3&4) : May-August, 2021 Issue
Seed extracts of Samadera indica Gaetrn. for the management of pumpkin caterpillar (Diaphania indica Saund.)
REMYA S.a1* and NISHA M. S.b2
aDepartment of Agricultural Entomology bDepartment of Nematology College of Agriculture (Kerala Agric. University), Vellayani - 695522 (Kerala)
Designation : 1Research Scholar *(sremya901@gmail.com), 2Assistant Professor
Subject : Entomology
Paper No. :
Total Pages : 6
Received :
Revised accepted :
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Citation :
Remya, S. and Nisha, M. S., 2021. Seed extracts of Samadera indica Gaetrn. for the management of pumpkin caterpillar (Diaphania indica Saund.). Green Farming. Vol. 12 (3&4): 175-180, May- August, 2021
ABSTRACT
ABSTRACT
Snake gourd, a vegetable commonly grown in Kerala is highly prone to the attack of pumpkin caterpillar (Diaphania indica Saund.). Being a crop generally grown in the homesteads, the pests could be managed only in an ecofriendly manner. Hence, there exist wide prospects for the utilization of botanicals for the management of insects. Niepa bark tree (Samadera indica (Gaertn.)) is one such potential candidate due to the presence of the bitter principle, quassinoids. In this study, we have analyzed the potential of various solvent and aqueous extracts of S. indica seeds in causing feeding deterrence and altering the biology of the pest. Application of acetone extract 57.1 mgg-1, due to the presence of Samaderins A and B offered greater feeding deterrence against the pest, resulted in higher larval mortality and changes in normal biology of the pest.
Key words :
Acetone, Aqueous, Ethanol, Hexane, Samadera indica, Snake gourd
