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DYNAMICS AND INTENSITY OF APLE DISEASE DEVELOPMENT DURING ITS STORAGE

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Author(s): Dario Ivić | Bogdan Cvjetković | Tihomir Miličević

Journal: Poljoprivreda (Osijek)
ISSN 1330-7142

Volume: 12;
Issue: 2;
Start page: 36;
Date: 2006;
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Keywords: apple | post-harvest diseases | fruit rot

ABSTRACT
Post-harvest apple fruit diseases are primarily caused by fungi. The object of this research was to quantify yield loss caused by post-harvest diseases and to determine fungal species responsible for storage rots on the cv. Idared during three months of storage, as well as to compare the development of fungi inoculated on apple fruits in the laboratory conditions. Only fruits with the visible rot symptoms were regarded as "diseased". Total yield loss during all three months of storage was 1.9%. The percentage of diseased fruits increased from the harvest moment to the end of storage. The most frequent cause of post-harvest rot in all assessments was Monilia fructigena. Penicillium species and Botrytis cinerea were present in relatively high percentage. All fungal isolates from diseased fruits caused fruit rot when inoculated on apples and incubated for 28 days at 22°C. On fruits inoculated with the same isolates and incubated at 4°C rot development was slower. Isolates of M. fructigena developed most rapidly on inoculated fruits at 22°C, while the isolates of B. cinerea developed most rapidly at 4°C.
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