Field potential of Trichogrammatoidea bactrae Nagaraja as an egg parasitiod against pink bollworm, Pectinophora gossypiella (Saunders) in cotton
An experiment was conducted at Regional Agricultural Research Station, Lam, Guntur to evaluate the field efficacy of an egg parasitoid, Trichogrammatoidea bactrae Nagaraja through inundative releases against pink bollworm, Pectinophora gossypiella (Saunders) in cotton for two successive seasons, during kharif 2016â€“17 and 2017â€“18. The mean larval incidence of pink bollworm was significantly lower in T. bactrae released plots with significant reduction in green boll damage and locule damage than untreated control, but significantly higher as compared to insecticide treated plots. Results suggest that the inundative release of T. bactrae achieved sizeable control of pink bollworm, hence it can be integrated with other control measures for sustainable management of pink bollworm.
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