Abstract

The three Trichoderma spp. viz., Trichoderma harzianum (Z5TH8), T. viride (Z7TV5) and T.virens (Z10TVS10) were isolated from black, red and laterite soils under various pH and temperature ranging from 22-300C. The soils were inoculated with these organisms and incubated upto 180 days under laboratory condition for six months to study the application of neem and pongamia cakes which enhanced the survivability and population in all soil types. In all types of soils, at 30th day of incubation, the population of Z5TH8, Z7TV5 and Z10TVS10 was higher in both neem and pongamia cakeamended soils. The higher population was recorded in neem cake amended soils compared to pongamia amended black soil and laterite soils compared to red soils.

Keywords: Trichoderma, Neem, Pongamia.