Compatibility of Entomopathogenic Nematodes (Meghalaya Isolates) with Spray Adjuvants

Investigations were carried out under laboratory condition to evaluate the effect of spray adjuvants viz. Sunflower oil, Glycerol, Tween 20, Triton X-100 and Paraffin liquid at 1% concentration on survival and infectivity of indigenous entomopathogenic nematodes (Steinernema carpocapsae and Heterorhabditis indica) of Meghalaya. Triton X-100 and Tween 20 showed little toxicity and Paraffin liquid and Sunflower oil showed higher toxicity against the IJs of S.carpocapsae (EPN-S-V) and H. indica (EPN-H-II). Infectivity of adjuvant-exposed (Triton-X 100, Tween 20 and Glycerol) infective juveniles of both the isolates was not adversely affected against larvae of G. mellonella.