Abstract
Under a climate change scenario, vineyards will experience serious challenges in the future. In an attempt to overcome such difficulties, this experiment offers a study on the effect of regulated deficit irrigation as a method for short-term adaptation to climate change in cv. Touriga Francesa, grafted into the rootstock 110R in the Douro region during a three-year period. Water stress on the plant and its effects on canopy, production, and quality of musts were analyzed. Rainfed vines (R0) were compared to three deficit irrigation regimes as a function of estimated crop evapotranspiration (ETc): R25 (25% ETc), R50 (50% ETc), and R75 (75% ETc). Water was applied on a weekly basis whenever predawn water potential showed moderate water stress until 15 days prior to harvest. The results suggest that rainfed plants under these circumstances suffered, in general, a negative impact on vine performance, while moderate water stress had more favorable effects on fruit composition, as well as in yield. Nonetheless, further studies should be conducted as irrigation did not show consistent effects on yield or berry composition.
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Claims 4
Claim · model-written summary
Rainfed vines suffered, in general, a negative impact on vine performance compared with deficit irrigation regimes.
- Taxon
- Vitis vinifera L.
Vitis viniferat0 - Treatment
- rainfede2
- Outcome
- vine performancee1
- Direction
- negative impacte1
- Comparator
- three deficit irrigation regimese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Yield and Quality of Vitis vinifera L., Touriga Francesa”
e1“rainfed plants under these circumstances suffered, in general, a negative impact on vine performance”
e2“Rainfed vines (R0) were compared to three deficit irrigation regimes”
Claim · model-written summary
Moderate water stress had more favorable effects on fruit composition.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- moderate water stresse3
- Outcome
- fruit compositione3
- Direction
- more favorablee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Yield and Quality of Vitis vinifera L., Touriga Francesa”
e3“while moderate water stress had more favorable effects on fruit composition, as well as in yield”
Claim · model-written summary
Moderate water stress had more favorable effects on yield.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- moderate water stresse3
- Outcome
- yielde3
- Direction
- more favorablee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Yield and Quality of Vitis vinifera L., Touriga Francesa”
e3“while moderate water stress had more favorable effects on fruit composition, as well as in yield”
Claim · model-written summary
Irrigation did not show consistent effects on yield or berry composition.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- irrigatione4
- Outcome
- yield or berry compositione4
- Direction
- did not show consistent effectse4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Yield and Quality of Vitis vinifera L., Touriga Francesa”
e4“irrigation did not show consistent effects on yield or berry composition”
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.