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Reema Sharma , R. S. Bhandari

Abstract

In the present study, an attempt was made to control pod and seed borer Caryedon serratus (Olivier) (Coleoptera: Bruchidae) infesting leguminous trees, in the field by systemic insecticides. For this two application methods Soil application and tree injection were tried. In both the methods random block designing was used taking G.B.H. (Girth at Breast Height) into consideration. The doses of insecticides were calculated according to girth class. Treatments were randomly allotted to the trees such that every girth class receives an application. In soil application method Phorate 10 G (organophosphate) was found better than carbofuron (carbamate). In tree injection method, dimethoate 30 EC and monocrotophos 36 EC, were applied and Dimethoate was found more effective.

Keywords

Caryedon serratus, Soil Application, Tree Injection, Phorate, Carbofuron, Dimethoate, Monocrotophos

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Reema Sharma ¹, R. S. Bhandari ¹

Affiliations
1 Maize Entomology Unit Directorate of Maize Research Pusa Campus, New Delhi - 110012, IN

Abstract

Botanical extracts of Acorus calamus L. and Adhatoda vasica Nees. (concentrations used 1%, 0.5% and 0.25%) as well as commercial preparations of Azadirachta indica (Neem) viz. neem oil based Multineem 0.03% EC (concentrations used 0.015%, 0.0075% and 0.00375%) and neem seed kernel based Neemarin 0.15% EC (concentrations used 0.075%, 0.0375% and 0.01875%) were tested against the pest. Tests were carried out on Acacia nilotica seeds with freshly laid eggs, freshly hatched eggs and on treated seeds onto which freshly emerged beetles were released. A. calamus showed the best ovicidal and larvicidal activity causing 100 per cent mortality. It also acted as the best oviposition deterrent. Rest of the botanicals showed more or less similar activities.

Keywords

Acacia Nilotica, Acorus Calamus, Adhatoda Vasica, Neemarin, Multineem.

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