Vol. 12, Special Issue 8 (2023)

Author(s):
A Abirami, T Abdul Razak, K Elanchezhyan, N Seenivasan and KG Sabarinathan

Abstract:
Potential of Entomopathogenic nematodes (EPNs) against the larval predator Chrysoperla carnea and parasitoid Trichogramma chilonis were studied. Pathogenicity of isolated EPNs at different concentrations (200, 400, 600, 800, 1000 and 1200 IJs/100 eggs or larva) were tested against different days after treatment. Isolated EPN strain Steinernema sp. found harmless to the different days of parasitized eggs of tricho-card at different concentrations with more than 70 percent adult emergence in all treatments. Additionally, C. carnea demonstrated that mortality was 93.22 percent at higher doses (1200 IJs/larva) compared to 65.35 percent at lower doses (200 IJs/larva). The study illustrated that at lower concentrations, EPNs were less harmful to the natural enemies.