EFEITO DE FUNGICIDAS NO CONTROLE DA FERRUGEM DO FEIJOEIRO CAUSADA POR UROMYCES APPENDICULATUS EM CONDIÇÕES DE CAMPO

• Autor(a) principal: Modesto, J. C.
• Data de Publicação: 2022
• Outros Autores: Fenille, R. C., Habermann, G. [UNESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1590/1808-1657v72p2472005; http://hdl.handle.net/11449/236915
• topic: Trifloxystrobin; propiconazole; azoxystrobin; tebuconazole; Phaseolus vulgaris; Trifloxystrobin; propiconazole; azoxystrobin; tebuconazole; Phaseolus vulgaris

The efficacy of fungicides for the controlof bean rust was evaluated, under field conditions. The experiment was conducted in Marília, SP (Brasil), using bean plants of the 'Carioca' group. Three sprayings were applied, each 14 days, with spray volume of 300 liters ha-1, with the following active ingredients: trifloxystrobin + propiconazole (75 mL ha-1), prothioconazole (100 mL ha-1), azoxystrobin (50 g ha-1) + nimbus 0,25% v/v and trifloxystrobin + tebuconazole (50 + 100, 60 + 120 and 75 + 150 mL ha-1). The disease control provided by active ingredients was evaluated on leaves, with its infection index calculated from a 9-degree disease index. All the fungicides and their doses used were efficient in controlling leaf bean rust (Uromyces appendiculatus), reaching more than 90% efficiency. In the control treatment the leaf infection index reached 52% at the third evaluation.