Abstract:
Seed health testing was carried out for four cultivars of Zea mays according
to the rules of ISTA (1966). These recommended rules were dry inspection
and inoculation methods on both blotter and agar media.
The blotter
method proved to be suitable for detection of Fusariumm moniliforme in the
ratio of 33% on seed sample of local variety obtained from Damazin State .
It was the heighst percentage incidence. The incidence of the fungus was
24% in sample from Kassala while the incidence of the fungus was 15% in
cultivar Hudeiba 1 (certified seed)
Other fungi detected were Aspergillus spp,
Drechslera maydie,
Macrophomina phaseolina , Alternaria spp and colletoteichum sp.
The physiological studies on the suitable temperature for growth
of
Fusarium moniliforme proved that pH 7 was the optimum for fungus
growth .
The source of carbon on patoto agar medium sucrose .
The
fungus produced both macro and microconidia in the ratio of 3 - 13%
respectively .
The pathogenicity test revealed that the fungus causes seed rot and damping-
off . Drechslera maydis as detected in the local sample of Damazin State
and cultivar Hudeiba 2 (certified seed) .
The suitable temperature for growth of Fusarium moniliforme as found to be
28 0 C and the suitable medium was potato dextrose agar (PDA).
In the study extract of some plants were used as by-products for control of
Fusarium moniliforme .
These were Proboscidea parvuflora, Ginger and
Ushar ( Calotropis procera).
These by – products gave good promising
results.
ix
It was found to be as an effective agent against the fungus Fusarium
moniliforme
