Efeito da aplicação de lodo de esgoto na severidade da murcha-de-curtobacterium em feijoeiro

• Autor(a) principal: Rodrigues, Ronaldo Bueno [UNESP]
• Data de Publicação: 2006
• Outros Autores: Silva Júnior, Tadeu Antônio Fernandes Da [UNESP], Maringoni, Antonio Carlos [UNESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1590/S0100-54052006000100013; http://hdl.handle.net/11449/212569
• topic: Curtubacterium flaccumfaciens pv flaccumfaciens; Phaseolus vulgaris; plant disease control; Curtubacterium flaccumfaciens pv flaccumfaciens; Phaseolus vulgaris; controle de doença; matéria orgânica

This work was aimed at evaluating the effect of different sewage sludge concentrations (SS) on the reduction of the severity of curtobacterium wilt in bean plants (Pérola cultivar), and on plant development (dry mass of the above-ground part of plants), in two assays under greenhouse conditions. In the first assay, SS doses of 0, 2.5, 5.0, 7.5, and 10% were used. For the second assay, SS doses were 0, 0.5, 1.0, 1.5, 2.0, and 2.5%, incorporated in soil, with previously corrected pH and added with chemical fertilizers at the rate recommended for the crop. Plants that had not been inoculated with the pathogen were maintained in both assays. No efficacy was verified for the different SS doses studied in the assays on the reduction of disease severity symptoms, as well as on dry mass of inoculated plants. Concentrations of SS incorporated to the substrate higher than 5% were toxic to bean plants, reducing dry mass of plants.