Olive tree cercosporiosis, due to Mycocentrospora cladosporioides (Sacc.) P. Costa ex Deighton, is described, focusing the attention on recent advances in the knowledge of the biology and control. Usually, M. cladosporioides is responsible for severe defoliation of olive trees, but fruits can also be attacked. Contrary to the current belief that only mature leaves are affected by the fungus, attacks have also been observed in 5 to 6 month-old leaves. Moreover, slight differences have been observed in symptoms shown by fruits of cvs Frantoio and Coratina; the ones of Coratina, especially the ripe ones, exhibited a yellow halo around the sunken, dark-brown lesions, which was absent or barely visible in the drupes of cv Frantoio. No specific control measures are recommended and the two copper fungicides treatments usually applied against olive scab are considered effective for disease control. However, results of control trials demonstrate that they are not enough to effectively reduce cercosporiosis, thus suggesting that a different control schedule is necessary, mainly when climatic conditions favour the disease

La cercosporiosi o “piombatura” dell’olivo / Nigro F; Gallone P.; Ippolito A.. - In: INFORMATORE FITOPATOLOGICO. - ISSN 0020-0735. - 12(2003), pp. 13-16???.

La cercosporiosi o “piombatura” dell’olivo

NIGRO, Franco;IPPOLITO, Antonio
2003

Abstract

Olive tree cercosporiosis, due to Mycocentrospora cladosporioides (Sacc.) P. Costa ex Deighton, is described, focusing the attention on recent advances in the knowledge of the biology and control. Usually, M. cladosporioides is responsible for severe defoliation of olive trees, but fruits can also be attacked. Contrary to the current belief that only mature leaves are affected by the fungus, attacks have also been observed in 5 to 6 month-old leaves. Moreover, slight differences have been observed in symptoms shown by fruits of cvs Frantoio and Coratina; the ones of Coratina, especially the ripe ones, exhibited a yellow halo around the sunken, dark-brown lesions, which was absent or barely visible in the drupes of cv Frantoio. No specific control measures are recommended and the two copper fungicides treatments usually applied against olive scab are considered effective for disease control. However, results of control trials demonstrate that they are not enough to effectively reduce cercosporiosis, thus suggesting that a different control schedule is necessary, mainly when climatic conditions favour the disease
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11586/115504
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