Published in Scientific Papers. Series B, Horticulture, Vol. LXVIV, Issue 1
Written by Marko MIHAYLOV, Boyan STALEV
The impact of climate change on the phenological phases of the Pinot Noir variety clone 777 was studied during the period 2022-2023. The plantation was established in 2008 in the land of the village of Nikolaevo, Sliven district, in the southern wine-growing region of Bulgaria. The vines are formed on a one stem cordon with a pruning severity of 6 spurs, at planting distances of 2.4 x 0.9 m and non-irrigated conditions. The climate is transitionally continental with low mountain influence and diverse relief. In 2022, budburst begins in the first ten days of March, lasting about 35 days, flowering varies from 17 to 22 days, veraison occurs from 18 to 23. In 2023 budburst begins in the first ten days of April with a duration of 5 to 9 days, flowering began on June 04, with the standardized variants flowering 9 days longer, veraison is from 20 to 23 days. The grape harvest was carried out in the third ten days of August for 2022 and the first ten days of September for 2023. The difference in phenophases is due to the uneven distribution of rainfalls and unpredictable temperature dynamics.
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