Author: G.S. PRASAD AND H.R. RANGANATH

Publishing Date: 2006

E-ISSN: 0255-7576

Volume 24 Issue 1

ABSTRACT:

Studies on the survival and infectivity of Heterorhabditis indica (Andaman isolate) was carried out in laboratory by simulating the abiotic parameters viz., temperature, soil moisture and relative humidity, in sandy loam soil collected from Chidiyatapu, South Andaman, India. It was found that for survival and infectivity of H. indica, 8 % soil moisture and temperature of 24° C at a relative humidity of 100 % was optimum, resulting in maximum infectivity of 75.3 %. Moisture levels above or below 8 % and temperatures above or below 24° C at 100 % relative humidity led to decrease in survival and infectivity of nematodes.