Long-Term Study of the Crop Forcing Technique on cv. Tempranillo (Vitis vinifera L.) Vines and Suggested Irrigation Strategies to Improve Water Use Efficiency of Forced Vines
Publication date
2024-01-04ISSN
2073-4395
Abstract
Recently, the crop forcing technique (summer pruning that “forces” the vine to start a new cycle) has proven to be effective in delaying the harvest date and increasing must acidity, but also reducing the yield. However, recent information on deficit irrigation strategies combined with the crop forcing technique reveals that the crop forcing technique reduces irrigation water use efficiency. Two experiments were conducted. Experiment 1 was a 4-year trial to test the effect of the forcing pruning date on the phenology, yield, yield components and water requirements when post-veraison water stress is applied. In this experiment, the treatments were unforced vines (UF-RDI) and forced vines with a forcing pruning date about 70 (F1-RDI) and 100 (F2-RDI) days after budburst. The harvest date was delayed 34 (F1) and 66 (F2) days increasing the must acidity and malic acid concentration in the forced treatments. However, both forced treatments had a reduced yield (36% in F1 and 49% in F2) and irrigation water use efficiency (12% in F1 and 65% in F2). Experiment 2 was a 2-year trial in which irrigation was suppressed before the forcing pruning in F1 (F1-Pre) and F2 (F2-Pre) and after veraison. The yield, yield components, must quality and irrigation were compared to forced vines with irrigation suppression only after veraison (F1-RDI and F2-RDI). For the entire experiment, both treatments in which irrigation was suppressed before the forcing pruning reduced the amount of irrigation supplied (10% in F1-Pre and 30% in F2-Pre) with no negative effects on the yield, yield components or must quality when compared to F-RDI treatments.
Document Type
Article
Document version
Published version
Language
English
Subject (CDU)
631 - Agriculture in general
633 - Field crops and their production
Pages
19
Publisher
MDPI
Is part of
Agronomy
Citation
Oliver-Manera, Jordi, Omar García-Tejera, M. Mata, and J. Girona. 2024. “Long-Term Study of the Crop Forcing Technique on Cv. Tempranillo (Vitis Vinifera L.) Vines and Suggested Irrigation Strategies to Improve Water Use Efficiency of Forced Vines.” Agronomy 14 (1): 130. https://doi.org/10.3390/agronomy14010130.
Grant agreement number
MINECO/Programa Estatal de I+D+I orientada a los retos de la sociedad/RTA2015-00089-C02-02/ES/Optimización del riego deficitario en viñas sometidas al forzado de la producción para la mejora de la calidad del vino frente al cambio climático/
Program
Ús Eficient de l'Aigua en Agricultura
This item appears in the following Collection(s)
- ARTICLES CIENTÍFICS [2685]
Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by/4.0/