Abstract:
Eight fungicides of both systemic (Agrizim, Bavistin, Derosal and Mopsin) and non-systemic
(Captaf, Foltaf, Thiride and Rizolex) groups were tested against Macrophomina phaseolina (Tassi) Goid.
inciting charcoal rot in maize. In vitro study showed complete inhibition of growth of the pathogen at a very
low concentration (30 ppm) with Bavistin followed by Mopsin (40 ppm), Agrizim (100 ppm), Rizolex (120
ppm), Derosal (200 ppm), Foltaf (500 ppm), Captaf (600 ppm) and Thiride (1000 ppm). Complete inhibition
of sclerotial germination, however, occurred with Mopsin and Thiride, and the germination was poor to very
poor with the remaining fungicides. Pot culture experiments in 'sick soil' showed that Derosal, Foltaf and
Mopsin were the best in reducing charcoal rot incidence while field experiments in 'sick plot' showed that
Bavistin was the best followed by Mopsin, Derosal and Agrizim
