Journal of Biopesticides (2012) 5, 196-198

S.M. Chavan, K.H. Kabade and Sushil Kumar (2012)
Laboratory evaluation of different chemical insecticides and biopesticides against larvae of teak skeletonizer, Eutectona machaeralis (Walker)
Journal of Biopesticides 5 (Suppl.), 196-198
Abstract: Studies were carried out during 2010-2011 to evaluate toxicity levels of different insecticides and bio-pesticides against larvae of teak skeletonizer, Eutectona machaeralis (Walker) which is the most pernicious insect-pest of teak. Endosulfan (35 EC 0.07 %), Chlorpyriphos (20 EC 0.05 %), Lambdacyhalothrin (5 EC 0.003 %), Thiamethoxam (25 WG 0.0084 %), Bacillus thuringiensis (Btk) (2 gm/L), Btk (3 gm/L), Beuveria bassiana (2 gm/L), B. bassiana (3 gm/lit) Metarrizium anisopliae (2 gm/L), M. anisopliae (2 gm/L), NSKE (5 %) were tested under laboratory conditions apart from water spray (control) using Completely Randomized Design with three replications each on third instar larvae of E. machaeralis. Observations on mortality of the larvae were recorded at 12 hrs 1, 3 and 7 days after treatment. Among different treatment tested, lambdacyhalothrin recorded cent percent mortality within 24 hrs after application. Chlorpyriphos and endosulfan were found to be the next best treatments for their knock down toxicity within 24 hrs after application. Considering environment safety control measures for conserving natural enemies the biopesticides B. thuringiensis (Btk), B. bassiana, M. anisopliae each with 3 gm/L found to be the best treatment causing 50.77 to 68.07% percent mortality followed by chemical insecticides. The treatments thiamethoxam, B. thuringiensis, B. bassiana, M. anisopliae each with 2 gm/L found to be less effective.
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Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
control - general
Research topic(s) for beneficials or antagonists:
evaluation - screening - selection

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Eutectona machaeralis	Teak (Tectona grandis)	India