Vol. 11, Special Issue 6 (2022)

Author(s):
Smriti Yadu and Dr. Jaya Laxmi Ganguli

Abstract:
In the present studies, a species of termite namely Odontotermes redemanni (Wasmann), which were identified by Dr. C.M. Kalleshwara Swamy (Senior Scientist and taxonomist) UAHS, Shivmogga, Karnataka, were selected for the present studies. Four different EPN species namely, Steinernema carpocapsae, S. glaseri, Heterorhabditis indica and H. bacteriophora at concentrations of 1.00 µL, 5.00 µL and 10.00 µL having approximately 75, 150 and 300 IJs-plate^-1 respectively along with untreated control were tested on both workers and soldiers under 5 replications of each EPN. Result indicated that H. indica at 5.00 µL (150 IJs-plate^-1) showed significant performance in killing the termite workers and soldiers termite O. redemanni. Soldiers were more susceptible than workers. The sequence of virulence of EPNs observed was H. indica> S. glaseri> H. bacteriophora> S. carpocapsae for workers and in soldiers. All the EPNs were effective in 5 µL concentration i.e. 150 IJs-plate^-1 but among them, H. indica performed best as it was comparatively more virulent than rest.