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Summa Phytopathologica

versão impressa ISSN 0100-5405versão On-line ISSN 1980-5454

Resumo

RODRIGUES, Ronaldo Bueno; SILVA JUNIOR, Tadeu Antônio Fernandes da  e  MARINGONI, Antonio Carlos. Effect of sewage sludge application on the severity of curtobacterium wilt in bean plants. Summa phytopathol. [online]. 2006, vol.32, n.1, pp.82-84. ISSN 0100-5405.  https://doi.org/10.1590/S0100-54052006000100013.

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.

Palavras-chave : Curtubacterium flaccumfaciens pv flaccumfaciens; Phaseolus vulgaris; plant disease control.

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