Journal of FARM SCIENCES, Vol 21, No 2 (2008)

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Utilization of Botanicals and Mycopathogens in the Management of Sucking Pests of Okra

Anitha K.R., B.S. Nandihalli

Abstract


A field experiment was conducted to find out the efficacy of certain botanicals and mycopathogens against okra leafhopper, Amrasca biguttula biguttula (Ishida) and aphid, Aphis gossypii (Glover) at Main Agricultural Research Station (MARS), Dharwad Karnataka during 2006-07. Results revealed that, among botanicals and mycopathogens, neem oil @ 2% was found effective in controlling the leafhopper population (1.41 and 4.11 leafhopper/ 3 leaves at 15 DAS of first and second spray, respectively) while NSKE @ 5% was found effective against aphid (2.10 and 5.22 aphids/ 3 leaves at 15 DAS of first and second spray, respectively). Among biorationals, NSKE proved to be the most economical treatment as realized by highest net returns (Rs. 6,418/ha). NSKE recorded highest C: B ratio of 1: 8.56 which was followed by oxydemeton methyl 25 EC (1: 8.37).

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