Mustard aphids, Lipaphis erysimi (Homoptera: Aphididae) is a widely distributed serious pest of oil seed crops and vegetables in India, which is parasitized by Diaeretiella rapae in good number at Meerut. Aphids are the tiny global insects, yet these are capable of destroy the crop due to their fast multiplication rate, virus transmission capability and draining the plant sap rapidly. These easily migrate form one crop to another and established colony soon. Its effect is more serious in Northwestern U.P. Among its natural enemies, Diaeretiella rapae, checks its fast multiplication up to some...

This book provides the biology, penetration and emergence behaviour of Hemipteran mermithid, Hexamermis vishwakarma Dhiman that can be used as biological control agents against insect pests (Leptocoris augur) of the Kusam tree. Thus, the entomophilic mermithids offer a promising potential for insect control and these nematodes have been used in different parts of the world as biological insecticides. But, in India, the economic value of mermithids in insect pest control does not appear to have been fully appreciated yet. In India, field trials to control the insect pests utilising these...

Ecological study of plant parasitic nematodes plays an important role in minimizing the infestation of almost all the parasitic forms of phyto nematodes. The nematode population size depends on action and reaction of edaphic factors including the host plant itself. Analysis of relationship between variation in soil parameters and the irregular pattern should lead to an improved understanding of how these organisms interact with the soil environment. In the present work the author has attempted to analyse population dynamics of plant parasitic nematodes infestation Mangifera indica (mango) and...