Affiliation:
1. All-Russian Research Ya.I. Potapenko Institute for Viticulture and Winemaking – Branch of the Federal Rostov Agricultural Research Centre
Abstract
The purpose of research is to analyze data obtained over two periods of studying the Pinot noir grape variety under the changing climate of Novocherkassk, Rostov Region. Research was carried out at the Don ampelographic collection named after Ya.I. Potapenko according to generally accepted methods in viticulture and GOST standards. Data were analyzed for two five-year observation periods: the first – 1981–1985 and the second – 2016–2020. The interval between periods was 30 years. The periods differed in the method of cultivation and planting pattern. In the first period, the variety was studied in its own root culture with a planting scheme of 2 × 1.5 m, in the second period the bush culture was grafted on the rootstock Berlandieri × Riparia Kober 5BB with a planting scheme of 3 × 1.5 m. During both periods, the variety was studied in a covered culture. Data on agrobiological indicators, productivity, crop condition, and tasting assessment of the wine are presented. The preservation of buds in the covering bank by period was 62.3 and 78.6 %, respectively. The excess of the Pinot noir variety in the second period in terms of average bunch weight was 55 g. The productivity of the shoot was 2.9 times, and the yield was 1.9 times higher than in the first period. The average sugar content in the 1st and 2nd periods was at the level of 21.7–23 g/100 cm3 with a titratable acidity of 8.1–7.8 g/dm3. A comparative analysis of the climatic conditions of the periods showed that in the summer months of the second period there were changes towards an increase in temperature and a decrease in the amount of precipitation. Climate change did not have a negative impact on economic and biological traits. The variety has increased: the percentage of blossom¬ming buds, fruitful shoots, average bunch weight, yield, sugar content in berry juice. The potential for producing wine with good organoleptic properties remains.
Publisher
Krasnoyarsk State Agrarian University
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