It firstly creates yellowish and translucent spots, which they extend, into large brown areas, with a various symptomatology. It mostly grows with a temperature around 18° C, with humidity close to 100% and wet foliage for at least 3 hours. It affects all the green parts of the plant, both young vegetation and less herbaceous tissues.
The preventive treatments are cupric based and can be used the same recommended for Blackspot.
The curative treatments can be broad spectrum fungicides (Dodine), triazoles, cupric, and Fosetyl aluminum. On roses it appears during summer season, after the first flowering, in warm, sultry places, with poor airing.
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