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Possibility of Detecting Species from the Phytophthora Genus in the Rhisosphere Soil of oak Trees Using Visual Crown Assessment

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Tkaczyk M. , Milenković I. , Kubiak K. A.

Prace Instytutu Lotnictwa

2014

tom Nr 4 (237) December 2014

92--101

This paper explains biological background of the project. Oak decline in Polish stands in recent years has become a serious problem. Symptoms of disease like thinning crowns, yellowing of the leaves or the appearance of dark exudates on the trunks are observed. Such symptoms are characteristic for pathogenic organisms of the genus Phytophthora. Identification and confirmation of the presence of these pathogens is difficult. That is why we have tried to estimate the presence of pathogens in the rhizosphere soil in oak stands on the basis of visual assessment of crowns trees with symptoms typical of Phytophthora infection.