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Indian Journal of Entomology
Year : 2013, Volume : 75, Issue : 4
First page : ( 320) Last page : ( 324)
Print ISSN : 0367-8288. Online ISSN : 0974-8172.

Ecofriendly pest management against brinjal shoot and fruit borer, Leucinodes orbonalis guenee

 Malsawmzuali, Imtinaro L, Alemla AO M., Neog Pankaj*

Department of Entomology, School of Agricultural Sciences and Rural Development, Nagaland University, Medziphema – 797106, Nagaland

*E-mail: pankaj74neog2011@yahoo.com

Online published on 2 December, 2013.

Abstract

A field experiment was conducted during kharif 2011 to evaluate the efficacy of various ecofriendly insecticides viz., juice of garlic (18g), ginger (9g) and chilli (9g) mixture @ 3ml/lit; ash dust @ 100g and 150g/plant; tobacco extract @ 2ml and 3 ml/lit; neem oil @ 2ml and 3 ml/lit and one synthetic insecticide monocrotophos 36 SL @ 2 ml/lit as standard against brinjal shoot and fruit borer, Leucinodes orbonalis Guenee. Monocrotophos 36 SL @ 2ml/lit was the best reducing mean shoot and fruit infestation of 83.61% and 75.33%, respectively over control as recorded after the 1st and 2nd spraying. Tobacco extract @ 3ml/lit was the 2nd best followed by ash dust @ 150 g/plant. The maximum pest population was recorded in the second week of July with 2.06 larvae/plant in case of shoot and 1.20 larvae/plant in case of fruit infestation. The correlation between infestation and abiotic factors indicates that the minimum temperature, rainfall and relative humidity favoured the infestation (r=0.631, 0.402 and 0.504). There was also positive correlation between the infestation and maximum temperature (r=0.299).

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Keywords

Ash dust, tobacco extract, neem oil, monocrotophos 36 SL, shoot and fruit borer, correlation, brinjal.

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