The Evaluation of Trichoderma consortia against Fusarium udum causing wilt of Pigeonpea

Pigeonpea is one of the important pulse crop Madhya Pradesh, a State India. The plant gets infected by pathogen Fusarium udum causing wilt disease, which major constraints in production and productivity pigeonpea. present study aimed to carry out vitro condition assess possible use biocontrol consortia field conditions. Six Trichoderma viz., T1- T. viride + harzianum (JC-I), T2- virens (JC-2), T3:- +T. (JC-3), T4- hamatum (JC-4), T5- (JC-5), T6- (JC-6) T0- Control were evaluated for their antagonistic activity against F. udumunder (JC-4) was found most effective(58.82 %) inhibiting radial growth udum. volatile compound from consortium T5-T. (JC-5) exhibited maximum inhibition (81.84%) sporulation followed T1-T. (JC-I) (55.49% inhibition) . culture filtrate showed 100% test (82.89%) at 5 % concentration. It also observed that with an increase concentration filtrates all species, mycelial proportionally decreased. Trichodema may be tried manage pigeonpea because they worked synergistically gave high impact use.