Efficacy of entomopathogenic fungi against chrysanthemum aphid, Macrosiphoniella sanborni (Gillette)

Abstract

An experiment was carried out to evaluate different entomopathogenic fungi against chrysanthemum aphid, Macrosiphoniella sanborni (Gillette) under laboratory conditions at Biocontrol Laboratory, N.M. College of Agriculture, Navsari Agricultural University, Navsari during 2019-20 and 2021-21. The pooled mean corrected percent mortality revealed that among all the entomopathogenic fungi tested at 4g/L, Verticillium lecanii was found superior over the rest of the treatments by recording highest percent mortality (53.66%) of aphids, M. sanborni and it was followed by Metarhizium anisopliae and Beauveria bassiana with 36.84 and 32.61 percent mortality, respectively. The lowest per cent mortality of aphid was recorded by Nomuraea rileyi (25.55%). The chemical check, Dimethoate 30 EC at 1ml/L recorded highest percent mortality of aphids (77.82 %) among all the treatments.