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Pesquisa Agropecuária Brasileira

Print version ISSN 0100-204XOn-line version ISSN 1678-3921


PIRES, Larissa Leandro; BRAGANTINI, Cláudio  and  COSTA, Jefferson Luís da Silva. Storage of dry bean seeds coated with polymers and treated with fungicides. Pesq. agropec. bras. [online]. 2004, vol.39, n.7, pp.709-715. ISSN 1678-3921.

Coating seeds with polymers associated with chemicals is used to promote a better fixation of seed treatment products, and therefore minimizing toxic hazards. The objective of this work was to verify the effect of four-month storage on quality of dry bean (Phaseolus vulgaris L.) seed coated with polymers, and treated with fungicides. Bean seeds were inoculated by immersion in a suspension of Colletotrichum lindemuthianum (5x105 conidia/mL), applied under vacuum. After the inoculation, seeds were treated with different types of fungicides: wettable powder, dry powder and concentrated suspension, applied either mixed or prior to polymer coating. Two different types of PVA paint were used as coating agent. Seed quality was evaluated through germination, vigor and pathological tests. Germination of coated and treated seeds was not affected during the storage period. The association of coating and a wettable powder treatment showed a higher germination percentage after two months of storage. The formulations wettable powder and concentrated suspension promoted a better control of the pathogens.

Keywords : Phaseolus vulgaris; coating; seed treatment.

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