INFLUENCE OF SOME CLIMATIC FACTORS UPON POWDERY MILDEW ATTACK IN OAK FORESTS LOCATED IN TRANSYLVANIA

Published in AgroLife Scientific Journal, Volume 6, Number 2
Written by Ilie COVRIG, Camelia OROIAN, Petru BURDUHOS, Ioan OROIAN, Antonia ODAGIU

The threats of diseases against forests, together with climatic factors, are of highest concern worldwide. In common oak, powdery mildew is one of the most harmful diseases. In Romania, it is considered to be produced by Microsphaera abbreviata Peck sin. Erysiphe abbreviata Peck. In our trial, we aimed to test the influence of temperature, air relative humidity, and wind velocity characteristic for two areas in Cluj and Maramureș Counties; we tested their influence on the Microsphaera abbreviata Peck attack upon common oak and we quantified the relationships identified between the mentioned climatic factors and the Microsphaera abbreviata Peck attack degree between May 15th and June 14th 2016.Within that period, the Microsphaera abbreviata Peck attack was reported in both experimental fields. A larger mean attack degree and share of attacked oak trees were found in the experimental forest located in Maramureș County, compared to the reports from the experimental oak forest located in Cluj County. The results of our research emphasized the interrelationships between the considered environmental parameters and the Microsphaera abbreviate Peck attack degree on oak trees. The quantification of these relationships showed stronger values in the experimental field located in Cluj County, compared to the experimental field located in Maramureș County.

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COVRIG I., OROIAN C., BURDUHOS P., OROIAN I., ODAGIU A. 2017, INFLUENCE OF SOME CLIMATIC FACTORS UPON POWDERY MILDEW ATTACK IN OAK FORESTS LOCATED IN TRANSYLVANIA. AgroLife Scientific Journal, Volume 6, Number 2, ISSN 2285-5718, 77-82.


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