Trichoderma spp. possesses most of
the mechanisms responsible for biological
control and plant growth promotion. However,
the activity of Trichoderma spp. in soil is
highly influenced by several factors. Among
all the pesticides used in agriculture, herbicides
stand first and are widely applied to soil as
pre-emergence to manage a variety of weeds2.
However, indiscriminate use of herbicides has
raised several environmental concerns.
Deleterious effects of these herbicides may
affect the population and activity of biocontrol
agent Trichoderma that is primarily soil
inhabitant as well as may also affect the
population of Sclerotium rolfsii. Thus this
study was carried out to find out the effect of
various herbicides on radial growth of
Trichoderma spp. and Sclerotium rolfsii.