Affiliation:
1. Department of Plant Pathology and Mycology , Institute of Forest Ecology of the Slovak Academy of Sciences , Akademická 2, 949 01 Nitra , Slovakia
Abstract
Abstract
Dothistroma needle blight (DNB) is a disease of pine needles. It causes significant defoliation of affected trees; intensive attacks lead to damages of the whole stand. The relationship of trends in disease severity and intensity with climatic variables were studied in three Austrian pine plantations (Jahodná, Kálnica, Litava) during 2014–2018. During the monitoring period, the greatest variability in disease severity was observed in the top third of the crowns, which showed the highest correlation with the variants of the most important climatic conditions (temperature and relative humidity) tested. For the spread of DNB, based on statistical assessment, a higher number of intervals of environmentally favourable climatic conditions is crucial. Both Dothistroma species (D. septosporum and D. pini), which are causal agents of the disease, were identified in Jahodná. In Kálnica and Litava, only D. septosporum was present.
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