* College of Agricultural Engineering, Kumulur, Tiruchirappalli, Tamil Nadu.
Pandit Jawaharlal Nehru College of Agriculture and Research Institute, Karaikal - 609 603, U.T. of Pondicherry, India
Online published on 29 October, 2012.
Six native isolates of Trichoderma viride (TV-I, TV-2, TV-3, TV-4, TV-5 and TV-6) obtained from the rhizosphere regions of rice fallow blackgrain of Karaikal district, were screened in vitro against Macrophomina phaseolina causing root rot of ricefailow blackgram. All the native isolates were tested for its antagonistic efficiency against M.phaseolina through dual culture technique. Among the six different native isolates tested, TV-3 was identified as an efficient antagonist which not only inhibited the growth but also reduced the sclerotial size of M. phaseolina.
