Analyses on the chestnut (Castanea sativa Mill.) plant distributed in the Sheki-Zaqatala region

A severe decline in European chestnut (Castanea sativa Mill.) stands across the Sheki-Zaqatala region of Azerbaijan, driven by chestnut blight (Cryphonectria parasitica) and root/collar rot (Phytophthora spp.), has resulted in 65% mortality and 30% progressive dieback of surviving trees. The study, covering 71 villages at altitudes of 600–1,600 m, found that older trees (50–100 years) were most vulnerable, leading to a 60–70% drop in regional chestnut yield since the 1990s. While C. parasitica was prevalent, Phytophthora was also identified as a significant contributor, particularly in southern villages. The research highlights the need for a combined phytopathological approach to restore these culturally and economically vital stands.

(Ed.). (2026). Analyses on the chestnut (Castanea sativa Mill.) plant distributed in the Sheki-Zaqatala region. Acta Botanica Caucasica. https://doi.org/10.30546/abc.2026.30943