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Ciência e Agrotecnologia

versão impressa ISSN 1413-7054

Resumo

FERREIRA, Josimar Batista et al. Sensibility of Colletotrichum gloeosporioides (coffee blister spot) to different fungicide concentrations. Ciênc. agrotec. [online]. 2009, vol.33, n.spe, pp.2052-2058. ISSN 1413-7054.  https://doi.org/10.1590/S1413-70542009000700059.

With the aim of assessing the effect of selected fungicides on Colletotrichum gloeosporioides, the cause of coffee blister spot, in vitro tests were carried out in the Laboratory of Diagnosis and Control/UFLA, Federal University of Lavras, Brazil. In the in vitro experiments the fungicides were incorporated into malt extract medium (MEA 2%) to evaluate the effect on the fungus growth rate, and concavity slides containing water plus fungicide to assess the conidia germination. The fungicides tetraconazol, triadimenol, chlorothalonil and mancozeb were tested on the mycelial growth inhibition (in the concentrations of 1, 5, 10, 25, 50, 100, 500 and 1.000 mg L-1) and on the inhibition conidia germination (in the concentrations of 1, 5, 10, 25, 50 e 100 mg L-1). The fungicides tetraconazol and triadimenol showed high efficiency on the mycelial growth inhibition. Chlorotalonil and mancozeb showed low efficiency and inefficiency, respectively. As to the germination of conidia, chlorothalonil and tetraconazol demonstrated to be more efficient in low concentrations.

Palavras-chave : In vitro Control; Antracnosis; Coffea arabica.

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