Optimizing deficit irrigation in Monastrell vines grafted on rootstocks of different vigour under semi-arid conditions

Pascual Romero, Pablo Botía, Elisa Morote and Josefa María Navarro

Agricultural Water Management, 2024, vol. 292, issue C

Abstract: A progressive irrigation reduction was applied during five years (from 2017 to 2021) by using regulated deficit irrigation (RDI) and partial root-zone drying irrigation (PRD) in field-grown mature Monastrell grapevines grafted on five different rootstocks (140Ru, 1103P 41B, 110R, and 161–49C) in the semi-arid wine-growing region of D.O. Bullas, South-Eastern (SE) Spain. The main goal was to adjust the irrigation volume applied during the growing season for each rootstock depending on the drought tolerance/vigour/productivity of the rootstock. Thus, the annual irrigation volume was progressively reduced (from 104 mm year−1 [2017] to 45 mm year−1 [2018‐2019] and 15 mm year−1 [2020‐2021] in the most drought-tolerant, vigorous, and productive rootstocks [1103P, 140Ru], and from 104 mm year−1 [2017] to 74 mm year−1 [2018‐2019] and 58 mm year−1 [2020‐2021] in the less drought-tolerant, vigorous, and productive rootstocks [110R, 161–49C, 41B]. A severe reduction of the irrigation in 140Ru and 1103P substantially reduced vigour, productivity, and berry weight and increased water productivity (WP) (220% and 97%, respectively) and phenolic berry quality (50% and 92%, respectively). Medium/low-vigour rootstocks also had a decrease in vigour, yield, and berry weight in response to an irrigation reduction, enhancing WP (between 17% [41B] and 41% [161‐49C] and phenolic berry quality (between 11% [161–49C] and 46% [110R] With a low water volume DI (53–77 mm year−1), vines grafted on 161–49C delivered the highest berry quality compared to other rootstocks. Physiological changes produced by very low water volume PRD were reflected in a reduced root water and nutrient uptake and leaf gas exchange and a slightly increased technological berry quality compared to RDI. However, PRD did not produce a significant improvement in WP, phenolic concentration, and global berry quality compared to RDI.

Keywords: Berry quality; Climate change; Partial root-zone drying irrigation; Regulated deficit irrigation; Rootstocks; Water stress; Water productivity (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0378377424000040
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:agiwat:v:292:y:2024:i:c:s0378377424000040

DOI: 10.1016/j.agwat.2024.108669

Access Statistics for this article

Agricultural Water Management is currently edited by B.E. Clothier, W. Dierickx, J. Oster and D. Wichelns

More articles in Agricultural Water Management from Elsevier
Bibliographic data for series maintained by Catherine Liu ().