INFLUENCE OF SOME SUMMER PRUNING ON  THE DYNAMICS OF GROWTH OF SHOOTS IN THE VARIETY SHIROKA MELNISHKA LOZA

The present study aim is to evaluate the influence of different summer (green) prunings on the shoot growth dynamics of the Shiroka melnishka loza variety grown under non-irrigated conditions. Four variants were tested – control (V0), thinning (V1), thinning and secondary shoot removal (V2), and combined summer pruning – thinning, secondary shoot removal and bunch removal (V3). Observations were conducted in 2023–2024 in the area of ​​the village of Harsovo through monthly measurements of shoot length and correlation analysis with temperature and precipitation. The results show that variant V3 leads to the most significant shoot growth, with the average length at the end of the vegetation reaching 209.3 cm in 2024. There is a strong positive correlation between temperature and growth in all variants (R > 0.90), with the highest being in V3. Whereas, precipitation has a lesser effect, especially in vines with reduced yield. The conclusion confirms that the application of combined summer pruning is an effective strategy for stimulating vegetative growth under limited water resources and elevated temperature.