Influence of green pruning operations on the degree of shoot maturation and growth vigor in the Storgozia grapevine variety
Yordanka Belberova
, Emil Tsvetanov
Резюме: The present study was conducted at the Experimental Base of the Institute of Viticulture and Enology – Pleven during the period 2014 – 2020. The aim of the research was to analyze the influence of green pruning operations (shoot thinning, cluster thinning, and leaf removal in the cluster zone) on the degree of shoot maturation and the growth vigor of the Storgozia grapevine variety. The results show that the application of green pruning does not directly affect the degree of shoot maturation. The parameters related to maturation and growth vigor varied significantly across the different years of the study, with the control treatments (without green pruning) demonstrating higher absolute values compared to the treatments with applied pruning. The average values of the ratio of mature shoot length to total shoot length (%) were lowest in the control treatment (V0) and the treatment with cluster thinning (V2). This suggests that the absence of green pruning, albeit to a limited extent, prolongs the maturation period of the shoots. Furthermore, vines without applied green pruning exhibited stronger growth, with the most significant differences observed in comparison to the treatments with shoot thinning. Data analysis revealed that shoot growth vigor is significantly influenced by at least one of the studied factors (annual climatic conditions or green pruning practices), with climatic conditions during individual years having a greater and more pronounced impact compared to the applied pruning operations. This study provides valuable insights for optimizing agronomic practices in the cultivation of the Storgosia variety, emphasizing the importance of climatic conditions and the need for an individualized approach when applying green pruning techniques.
Ключови думи: degree of shoot maturation and growth vigor; green prunings; one-year-old mature shoot; Storgozia variety
Цитиране: Belberova, Y., & Tsvetanov, E. (2025). Influence of green pruning operations on the degree of shoot maturation and growth vigor in the Storgozia grapevine variety. Bulgarian Journal of Crop Science, 62(3) 102-112 (Bg).
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| Дата на публикуване: 2025-06-26
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