Evaluation of the efficacy of new fungicides against powdery mildew (Leveillula taurica) on pepper crop

During the period summer/autumn 2006, the efficacy of 6 new fungicides against the disease development on three pepper cultivars (Kerato, Gemisti, Florinis type), in an artificially inoculated experimental crop in Velestino area, was evaluated. Commencing August 9 super(th), pepper plants were inocu...

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Bibliographic Details
Published in:Phytopathologia mediterranea 2009-08, Vol.48 (2), p.339-339
Main Authors: Vlasakoudis, AI, Pappas, A C, Khah, E M
Format: Article
Language:English
Subjects:
Leveillula taurica
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Summary:During the period summer/autumn 2006, the efficacy of 6 new fungicides against the disease development on three pepper cultivars (Kerato, Gemisti, Florinis type), in an artificially inoculated experimental crop in Velestino area, was evaluated. Commencing August 9 super(th), pepper plants were inoculated on 7 occasions at 3-6 day intervals with a spore suspension (20.000-70.000 spores ml super(-1)). Fungicides were applied twice, 30 day apart and at the recommended doses, commencing the appearance of first disease symptoms (25 days after the 1 super(st) artificial inoculation). The fungicides were evaluated for their effectiveness against both the amount of the disease (frequency, intensity) and the yield (weight, number of developed fruit). Compared to untreated controls, all fungicide applications significantly reduced the disease on the three pepper cultivars. Quinoxyfen gave the best control of the disease followed up by azoxystrobin, boscalid+pyraclostrobin, penconazole spiroxamine and flusilazole. Applications with penconazole and the mixture boscalid+pyraclostrobin, increased significantly the yield whereas, a tendency of reducing the weight and the number of fruits, was noticed in applications with the fungicides quinoxyfen and flusilazole.
ISSN:0031-9465