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Advisor(s)
Abstract(s)
The aim of this research was to test the effects of vineyard soil management practices combined with
deficit irrigation strategies on the performance of the grapevine (Vitisvinifera L.) red variety Tempranillo.
Two soil management practices (soil tillage – ST and permanent resident vegetation – RV) were combined
with three deficit irrigation treatments (regulated deficit irrigation – RDI, partial rootzone drying – PRD
and conventional sustained deficit irrigation – DI) during two growing cycles. Compared to ST, RV reduced
soil water content during spring, inducing a significant reduction in vine vegetative growth, yield and
must titratable acidity. The effects of irrigation treatments were not much pronounced. Only in the second
season RDI showed a significant reduction on vine vegetative growth, yield and must titratable acidity
as compared to PRD and DI whose results were similar to one another.
In a dry area such as ours and a low vigor vineyard, the combination of resident vegetation with deficit
irrigation treatments should be carefully considered as it can reduce yield without any benefits to grape
quality. In this site the conventional deficit irrigation should be preferred to RDI and PRD as it is technically
the simplest deficit irrigation strategy and has enabled an efficient control of vegetative growth without
negative impact on yield and berry composition as compared to the other irrigation treatments
Description
Available at ScienceDirect
Keywords
cover cropping grapevine partial rootzone drying deficit irrigation soil tillage
Pedagogical Context
Citation
"Scientia Horticulturae". ISSN 0304-4238. 129 (2011) 603-612