BIO Web Conf.
Volume 44, 2022CO.NA.VI. 2020 – 8° Convegno Nazionale di Viticoltura
|Number of page(s)||4|
|Section||Vineyard Management, Response to Abiotic Stress and Adaptation to Climate Change|
|Published online||31 January 2022|
Double-Pruning: preventive technique against spring frost damage
Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Borgo XX giugno 74, 06121, Perugia, Italy
2 Dipartimento di Scienze delle Produzioni Vegetali Sostenibili, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29100, Piacenza, Italy
* Corresponding author: email@example.com
The double pruning technique on Sangiovese vines, based on pre-pruning in February and finishing in April, induced a delay of bud break, which is an approach to avoid spring frost damage. The field experiment was conducted on Sangiovese vines mechanically spur-pruned during dormancy in February and manually finished post budburst to test the potential of ‘double-pruning’ approach to prevent the spring frost damage. This technique, associated with the finishing performed when the apical shoots on the mechanically-shortened canes were about 10 cm long, allowed to keep the basal buds in a dormant phase for almost 15 days, extending the resistance period against the spring frosts, particularly important for the cultivars characterized by early bud-break. Yield reduction per vine was -22% due only to the incidence of unsprouted buds, while the grape ripening profile was delayed with an increase of acidity and phenols and a decrease of pH and soluble solids.
© The Authors, published by EDP Sciences, 2022
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