Original Articles
Aswini A., Sharmila T., Raaga
Abstract
Biological control agents with ecofriendly approach now a day’s remained as a requisite in crop protection strategy against indiscriminate usage of chemicals. Contemporarily integration of technology made fungal agents potent with broad spectrum control. Hence present work aims at determining the antimycotic ability of Trichodermae species as biocontrol agent in controlled conditions against phyto-pathogens like fusarium and Colletotrichum species. Results revealed that Trichodermae viridae showed maximum inhibition on radial growth of fusarium oxysporiumf.s.p.capsici (76.74±0.4) in dual culture while its volatile metabolites on growth of C.gleosporides (53.3±0.3) and nonvolatile metabolites on C.capsici (70.94±0.6). While Trichodermae harzianum exhibited its maximum potentiality in arresting radial growth of C.capsici at 87.6±0.9 percent in dual culture while 58.6±0.2 reduction by volatile metabolites and over growth at 5% filtrate application by nonvolatile metabolites. From the results it has been illustrated that both Trichodermae species may serve as biological agents and in combination work effectively to control plant diseases with respect to their mode of infection and host pathosystem promoting harmful chemical free agricultural practices.