01777naa a2200133 a 450000100080000000500110000800800410001910000190006024500390007926000090011852013560012770000190148377301410150214678122005-03-09       2004    bl ---       0--  u    #d1 aHENNING, A. A.  aMicrobiolization of soybean seeds.  c2004  aSoybean seed tretament with fungicides has increased in Brazil from 5% in 1991 to93% after the 2002/03 growing season. Recently, the use of bioprotectors applied to seeds has raised the interest of international community because the hazards of chemical treatments to the environment and to the rhizobia. In 2004, two biological agents, Biotrich (Trichoderma sp.) at three dosages (2g, 4g and 6g/kg) and Bacillus pumius 28% (5g/kg), Vitavax Thiram (carboxin 50g + thiram 50g) and Maxim XL (metalaxyl 10g + fludioxonil 35g) respectively 2.0mL, 2.5mL and 1.0mL/kg of seed. Seeds of 'BRS 133' soybean cultivar were treated in plastic bags in the laboratory and sown in the field. The experimental design was a randomized complete block design with four replications and the means were separated by the Tukey's test at 5% level of probability. Among the fungicides, the best seedling emergence (78.3%) was achieved with carbendazin (30g i.a.) + thiram (70g i.a.) / 100kg of seeds, followed by carboxin (50g i.a.) + thiram (50g i.a.) and metalaxyl (10g i.a.) + fludioxonil (35g i.a.), with 57.5% and 41.9%. Seedling emergence with bioprotectors varied from 16.4% and 26.7% and were not different from untreated seeds (23.81%). The results showed that bioprotectants did not protect the seed when soil moisture for germination and seedling emergence is low.1 aHENNING, F. A.  tIn: SEMINARIO PANAMERICANO DE SEMILLAS, 19., 2004, Asunción. Conferencias y resumenes de trabajos presentados. Asunción, 2004. p. 330.