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Summa Phytopathologica

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

Resumo

DEBONA, Daniel et al. Effect of seed treatment with fungicides and acibenzolar-S-methyl in soybean cultivars on Asian rust control and seedlings growth. Summa phytopathol. [online]. 2009, vol.35, n.1, pp.26-31. ISSN 0100-5405.  http://dx.doi.org/10.1590/S0100-54052009000100004.

The influence of acibenzolar-S-methyl (ASM) and fungicides ASM in different doses provided reduction of AUPRC as well as it applied as seed treatment on Asian rust control as well as on growth presented synergism with the fungicides, increasing the control of soybean seedlings were evaluated in a completely randomized efficiency when compared to single applications. Except for ASM experiment with three replications, using the 'Agiara', 'M-soy 8000' applied in the smallest dose, all of the treatments presented control and 'M-soy 8080' soybean cultivars. The treatments were three doses higher than 77 % compared to the control plot. In general, the of ASM (0,05; 0,1 and 0,2 g of a.i. for kg of seeds), ASM (in the dose treatment of seeds with ASM and fungicides resulted in reduction of of 0,1 g of a.i. for kg of seeds) combined to the fungicides flutriafol, the dry weight (DW) in relation to control. The use of ASM associated pyraclostrobin and azoxystrobin, and the isolated application of these with fungicides attempting to delay the infection of Asian soybean as well as a control treated with water. The results showed reduction rust in the initial stages constituted a viable alternative for reduction of Area Under Progress Rust Curve (AUPRC) with the increase of the of primary inoculum, however the occurrence of some phytotoxic dose of ASM in the three cultivars of soybean. The isolated use of effects also must be considerated.

Palavras-chave : acibenzolar-S-methyl; fungicides; seed treatment; Phakopsora pachyrhizi; Glycine max.

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