Experiments were carried out in laboratory and greenhouse with the objectives of determining the incidence of Fusarium monilforme in corn seeds, its control by fungicide seed dressing and its effects on seedling emergence. Three hundred and thirteen corn seed samples were analyzed. through the blotter test, during 1993/94, 1994/95, 1995/96 and 1996/97 growing seasons. For controlling F. moniliforme, protectant fungicides (captan, thiram, pencycuron and tolylfluanid), alone or in mixture with broad-spectrum systemic fungicides (carboxin, thiabendazole, carbendazin and methyl thiophanate) were applied on the seeds using water as vehicle at 1.5% at rate. Fusarium moniliforme was detected in 100% of analyzed samples in the four growing seasons, with an average incidence of 56,7%. This fungus can be considered one of the most important pathogen associated with com seeds produced in Mato Grosso do Sul State. The fungicide mixture thiabendazole + captan, thiabendazole + thiram, toiylfluanid + carbendazin and toiylfluanid + methyl thiophanate were the most efficient treatments in the control of F. moniliforme in corn seeds, with potential to eradicate the fungus from the seeds. Significant effect of corn seed treatments with fungicides in relation to seedling emergence was observed, with distinction to mixture of thiabendazole with thirarn and captan as well as of tolylfluanid with carbendazin and methyl thiophanate.