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Cercosporiosis of olive in Apulia and attempts to control the disease

Author:
Nigro, F., Ippolito, A., Gallone, P., Romanazzi, G., Carmignano, P., Laccone, G.
Source:
Acta horticulturae 2002 no.586 pp. 773-776
ISSN:
0567-7572
Subject:
Mycocentrospora, copper oxychloride, defoliation, disease control, fruits, fungi, groves, leaves, olives, stone fruits, trees, Italy
Abstract:
Severe defoliation of olive trees due to the fungus Mycocentrospora cladosporioides (Sacc.) P. Costa ex Deighton, the causal agent of cercosporiosis, has been observed in Apulia (southern Italy) during the last three years. Although old mature leaves are primarily affected by the fungus, attacks to younger, 4- to 5-month-old leaves, have also been found. Trials aimed at evaluating the effectiveness of different control schedules by using copper oxychloride are in progress. Preliminary results indicate that in cv Leccino four treatments (February, April, end of August and late September) are required to effectively reduce the disease. Cercosporiosis attacks on olive drupes (cvs Coratina, Leccino, and Frantoio) in young and intensive groves were also recorded. Disease symptoms on the fruits varied according to the cultivar and ripening stage.
Agid:
312553