Bio-Efficacy of Various Antagonists Against the Pathogen Alternaria alternata of Mango in vitro by Dual Culture Technique

Trichoderma viride (Sardarkrushinagar isolate) was observed as potential antagonist agent against A. alternata, followed by T. viride (Hyderabad) and T. viride (Anand). Ten different known antagonists were screened in vitro for their antagonism to A. alternata by dual culture method. Among the antagonist tested, Trichoderma viride (Sardarkrushinagar) was found as potential antagonist which showed the maximum mycelial inhibition (90.20%) of A. alternata in vitro and followed by T. viride (Hyderabad) (86.05%) and T. viride (Anand) (82.91%).