Lalji Prasad , Rajiv Pandey , Israr A. Ansari , Subhash Chandra

Abstract

The cyclic pattern in the population dynamics of defoliators D. eridantis and P. reflexa of Dalbergia sissoo is governed by delayed density-dependent factors and its growth rate. However , environmental variable particularly humidity and temperature are also influencing the population , since theses are directly affecting the parasitism phenomenon.

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Lalji Prasad , Israr A. Ansari

Abstract

The effect of low temperature during cold storage on the survival period, mortality and fecundity of adult Copidosoma varicorne (Nees) was investigated under controlled laboratory conditions of 11.00 ± 1.00°C. Adult longevity was maximum 120 hrs. after 48 hrs. of storage. Specimens stored at 11 ± 1°C temperature increased longevity period which was significant, when compared with control. These studies were carried out during April-June, 1998 to explore the possibility of using C. varicorne as a promising biological control against Shisham defoliator (Dichomeris eridantis Meyr.) in the field including augmentation and innundative release on large scale in future under social forestry programme.

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