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Journal of Pharmacognosy and Phytochemistry

Journal of Pharmacognosy and Phytochemistry

Vol. 9, Issue 1 (2020)

Estimation of yield losses and bioefficacy of some novel insecticides against leaf hopper, Amrasca devastans in transgenic cotton

Author(s):

Ramalakshmi V, Lipsa Dash and Deepayan Padhy

Abstract:
Estimation of yield losses and Field efficacy of novel insecticides against leafhoppers on transgenic cotton were assessed during kharif 2011. Estimation of yield losses due to, leafhoppers, in RCH-2BG-II, RCH-2NBt, Tulasi-9BG-II and Tulasi-9NBt under protected and unprotected conditions was done with eight treatments and three replications in Factorial Randomized Block Design. RCH-2 was susceptible and Tulasi-9 was tolerant hybrid against leafhoppers. Among the treatments; Tulasi-9 NBt recorded lowest yield loss (13.13%) and RCH-2NBt recorded highest yield loss (19.99%) followed by Tulasi-9 BG-II and RCH-2 BG-II. The bioefficacy of certain novel insecticides against leafhopper recorded Fipronil 5% SC @50g a.i. ha-1 and fipronil 80% WG @50g a.i. ha-1 were effective in managing leafhopper with a population reduction of 70.9% and 67.6%, respectively.

Pages: 1848-1852  |  678 Views  341 Downloads


Journal of Pharmacognosy and Phytochemistry Journal of Pharmacognosy and Phytochemistry
How to cite this article:
Ramalakshmi V, Lipsa Dash and Deepayan Padhy. Estimation of yield losses and bioefficacy of some novel insecticides against leaf hopper, Amrasca devastans in transgenic cotton. J Pharmacogn Phytochem 2020;9(1):1848-1852.

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