SciELO - Scientific Electronic Library Online

vol.26 número1Relação entre coberturas vegetais e supressividade de solos a Rhizoctonia solaniInter-relação sexual de Magnaporthe grisea do trigo e de outros hospedeiros índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Fitopatologia Brasileira

versão impressa ISSN 0100-4158
versão On-line ISSN 1678-4677


LUZ, WILMAR C.. Effect of bioprotectors on seed pathogens, seed emergence, and corn yield. Fitopatol. bras. [online]. 2001, vol.26, n.1, pp.16-20. ISSN 0100-4158.

The use of plant bioprotectors constitutes a modern tactic of seed treatment for corn (Zea mays) disease control without environmental hazards. Experiments were carried out under laboratory and field conditions in Passo Fundo, RS, and in Pato Branco, PR, Brazil, aimed at evaluating the effects of seed microbiolization on seed pathogens, seed emergence, and corn yield. In the laboratory, most bioprotectants significantly reduced pathogen recovery from infected corn seeds. In field experiments, in 1997, in Passo Fundo, only Trichoderma harzianum (T-22) significantly increased seedling emergence and corn yield. All bioprotectors significantly improved seed emergence in Pato Branco. Paenibacillus macerans (144), T. harzianum (T-22), Flavimonas oryzihabitans, and Pseudomonas putida biotype B also provided a significant yield increase over untreated control. T. harzianum treatment showed a yield increase of 615 kg/ha over the untreated check. In 1998, in Passo Fundo, P. macerans (144), F. oryzihabitans, and Agrobacterium radiobacter provided the highest increases in seedling germination. All biological treatments, except F. oryzihabitans and Bacillus subtilis, showed significant yield increases. In Pato Branco, Pseudomonas putida biotype B, F. oryzihabitans, and P. putida biotype A (M 970841) provided the best corn seed emergence Paenibacillus. macerans (144), T. harzianum (T-22), F. oryzihabitans, A. Radiobacter, and B. subtilis significantly increased grain yield.Seed microbiolization is a promising technological alternative for corn seed treatment in Brazil.

Palavras-chave : bioproteção; sementes; Zea mays; microbiolização.

        · resumo em Português     · texto em Português     · Português ( pdf )


Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons