The strong inhibitory effect of alachlor
on radial growth of S. rolfsii was reported by
Siddaramaiah et al.,17 and Ekpo and
Mashingaidze4. This is in contrast to our results
where alachlor had no marked inhibition in
radial growth of S. rolfsii. This may be due to
the differences in the strain/isolate of S. rolfsii.
pendimethalin on S. rolfsii, respectively. Ekpo
and Mashingaidze4 reported the inhibitory
effect of metribuzin upon S. rolfsii at 1400
ppm. In case of our study metribuzin has
interestingly stimulated the radial growth of S.
rolfsii but the concentrations selected were
0.18, 0.37, and 0.74 ppm. It is possible that at
lower concentrations metribuzin might be
stimulatory to the growth of S. rolfsii. Kokwal
et al.,9 also concluded that toxicity of herbicides
depends upon concentration and also varies
with fungi to fungi.