Infectivity of entomopathogenic nematode against the cabbage butterfly (Pieris brassicae L.) in polyhouse and in field condition

Abstract Background Cabbage butterfly, Pieris brassicae Linnaeus (Lepidoptera: Pieridae), is a major insect pest affecting cole crops worldwide. Excessive applications of chemical-based insecticides have devastating impression over the organisms and environment. Results In this study, entomopathogenic nematode (EPN) Heterorhabditis bacteriophora Poinar strain EUPT-S26 (local isolate) was evaluated for control under polyhouse field conditions. Under conditions, highest mortality 91.6 94.0% observed in plots treated with nematodes suspension 1500 IJs/ml 2000 IJs/ml, respectively. Based on cabbage plant protection H. also applied assays course crop’s productive phase. Data demonstrated from treatments signify concentration (2000 IJs/ml) showed maximum larval least damage percentage 45 ± 1.07% that remained constant until harvesting; resulted productivity Conclusion According to assessed it suggested perform 3 EPNs during vegetative phase at time head formation increase reduce damage. The results approved are an effective alternative butterfly.