Mycoparasitic potential of growth promoting Trichoderma strains against phytopathogens

Abstract

Six isolates of Trichoderma asperellum viz. TRS W4, TRP W8, TRS R4, TRS R8, TRP C3 and TRP C4
obtained from rhizosphere and rhizoplane of wheat, rice and chickpea were selected for their growth
promoting efficacy in their native crops. These 06 isolates were tested for their biological control
potential against plant pathogens viz., Rhizoctonia solani (isolates from rice and chickpea), Sclerotinia
sclerotiorum (isolate from chickpea) and Bipolaris sorokiniana (isolate from wheat) under in vitro
conditions. Dual culture studyrevealed that all the Trichoderma isolates along with Th-14, commercial
Trichoderma harzianum strain used as positive control, completely parasitized, i.e. 100% mycelial
parasitiation, the growth of all test plant pathogens.