Abstract
Abstract Research on insect pathogenic viruses in India is reviewed. So far, 22 nuclear polyhedrosis viruses, eight granulosis viruses, one cytoplasmic polyhedrosis virus and one entomopox virus have been reported from insect pests, but very few systematic surveys of insect pathogens have been made. Pathology, morphology, bioassay, stability, transmission, safety, field trials, compatability studies and future prospects are among the topics considered. Most studies carried out relate to baculoviruses (nuclear polyhedrosis viruses) of Spodoptera litura (F.) and Heliothis armigera (Hb.), which are considered to be promising control agents for these pests. The baculovirus of Diacrisia obliqua (Wlk.) has recently been tested for safety and is also a promising agent for the control of this pest. There remains a need for intensive research on microbial control of other crop pests, to develop techniques of commercial virus production and utilisation, and to train personnel in microbial control.
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