Abstract:
Seed health testing for two cultivars of sorghum bicolor
namely Tabat and Wad Ahmed was carried out according to the
international Rules of Seed Testing Association (ISTA 1966).
The most important isolated fungi were Drechslera
hawaiiensis, Drechslera sp. Fusarium moniliforme, F. solanic, F.
oxysporum, F. semitectum, Alternaria alternate,
Helminthosporium spp. and Marcophomina phaseolina.
Pathogenic propensities for the fungus D. hawaiiensis was
investigated. It was found pathogenic on its host. Physiological
studies revealed that Potato dextrose agar medium was the best.
The optimum temperature for the fungus was 30oC.
Tilt and Biofidan fungicides were tested. Tilt was more
effective.
