| Issue |
BIO Web Conf.
Volume 44, 2022
CO.NA.VI. 2020 – 8° Convegno Nazionale di Viticoltura
|
|
|---|---|---|
| Article Number | 02004 | |
| Number of page(s) | 4 | |
| Section | Vineyard Management, Response to Abiotic Stress and Adaptation to Climate Change | |
| DOI | https://doi.org/10.1051/bioconf/20224402004 | |
| Published online | 31 January 2022 | |
Double-Pruning: preventive technique against spring frost damage
1
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: l.giord94@gmail.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
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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