Abstract
The effects of differential irrigation regimes on vine water status, yield, berry growth and composition, and wine quality parameters were investigated during three consecutive seasons (1999 to 2001) in a mature vineyard planted with Vitis vinifera cv. Bobal/161-49 in Requena (Valencia, Spain). The soil was a deep clay loam, Typic Calciorthid. Plant spacing was 2.45 x 2.45 m and plants were pruned to an open vase with ~12 buds per plant. Treatments consisted of a nonirrigated control (T1) and four irrigation treatments in which water was applied at different levels from flowering until near harvest: T2 (50-50-0), T3 (100-100-0 in 1999–2000 and 0-100-0 in 2001), T4 (100-100-50), and T5 (100-100-100) (where numbers are the percentage of the estimated ETcrop applied, respectively, in each of the periods: flowering to fruit set, fruit set to veraison, and veraison to maturity). The experimental design was a completely randomized block with four replicates and 64 vines per plot. Irrigation increased yield in all seasons mainly because of an increase in berry weight. The concentration of juice soluble solids and titratable acidity was only slightly affected by the irrigation treatment and a similar pattern was observed for the alcoholic content of the elaborated wines. The concentration of malic acid in juice and wines increased significantly with water application, while tartaric acid concentration in wines significantly decreased. However, the concentration of anthocyanins, total phenols, and color intensity of red wines decreased with increasing water application in an inverse pattern to that of berry size. Yield, berry weight, anthocyanins, total phenols, and color intensity of red wines were closely correlated with the water stress integral (which expresses the intensity and duration of stress) calculated from stem water potential determinations.
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Claims 9
Claim · model-written summary
Irrigation increased grape yield in all seasons.
- Taxon
- Vitis vinifera
Vitis viniferae1 - Material
- Bobal/161-49e1
- Treatment
- Irrigatione0
- Outcome
- yielde0
- Direction
- increasede0
- Qualifier
- in all seasonse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation increased yield in all seasons mainly because of an increase in berry weight.”
e1“Vitis vinifera cv. Bobal/161-49”
Claim · model-written summary
Irrigation increased berry weight.
- Taxon
- Vitis viniferaVitis viniferae1
- Material
- Bobal/161-49e1
- Treatment
- Irrigatione0
- Outcome
- berry weighte0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation increased yield in all seasons mainly because of an increase in berry weight.”
e1“Vitis vinifera cv. Bobal/161-49”
Claim · model-written summary
Irrigation only slightly affected juice soluble solids and titratable acidity.
- Taxon
- Vitis viniferaVitis viniferae1
- Material
- Bobal/161-49e1
- Treatment
- irrigation treatmente0
- Outcome
- concentration of juice soluble solids and titratable aciditye0
- Qualifier
- only slightly affectede0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentration of juice soluble solids and titratable acidity was only slightly affected by the irrigation treatment”
e1“Vitis vinifera cv. Bobal/161-49”
Claim · model-written summary
Irrigation only slightly affected wine alcohol content, following a similar pattern to juice properties.
- Taxon
- Vitis viniferaVitis viniferae1
- Material
- Bobal/161-49e1
- Treatment
- irrigation treatmente2
- Outcome
- alcoholic content of the elaborated winese0
- Qualifier
- a similar patterne0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a similar pattern was observed for the alcoholic content of the elaborated wines”
e1“Vitis vinifera cv. Bobal/161-49”
e2“The concentration of juice soluble solids and titratable acidity was only slightly affected by the irrigation treatment”
Claim · model-written summary
Water application significantly increased malic acid concentration in juice and wine.
- Taxon
- Vitis viniferaVitis viniferae1
- Material
- Bobal/161-49e1
- Treatment
- water applicatione0
- Outcome
- concentration of malic acid in juice and winese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentration of malic acid in juice and wines increased significantly with water application”
e1“Vitis vinifera cv. Bobal/161-49”
Claim · model-written summary
Water application significantly decreased tartaric acid concentration in wine.
- Taxon
- Vitis viniferaVitis viniferae1
- Material
- Bobal/161-49e1
- Treatment
- water applicatione2
- Outcome
- tartaric acid concentration in winese0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tartaric acid concentration in wines significantly decreased”
e1“Vitis vinifera cv. Bobal/161-49”
e2“with water application”
Claim · model-written summary
Greater water application decreased red wine anthocyanins, total phenols and color intensity.
- Taxon
- Vitis viniferaVitis viniferae1
- Material
- Bobal/161-49e1
- Treatment
- increasing water applicatione0
- Outcome
- concentration of anthocyanins, total phenols, and color intensity of red winese0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the concentration of anthocyanins, total phenols, and color intensity of red wines decreased with increasing water application”
e1“Vitis vinifera cv. Bobal/161-49”
Claim · model-written summary
Yield and berry weight were closely correlated with the water stress integral.
- Taxon
- Vitis viniferaVitis viniferae1
- Material
- Bobal/161-49e1
- Treatment
- water stress integrale0
- Outcome
- Yield, berry weighte0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield, berry weight, anthocyanins, total phenols, and color intensity of red wines were closely correlated with the water stress integral”
e1“Vitis vinifera cv. Bobal/161-49”
Claim · model-written summary
Red wine anthocyanins, total phenols and color intensity were closely correlated with the water stress integral.
- Taxon
- Vitis viniferaVitis viniferae1
- Material
- Bobal/161-49e1
- Treatment
- water stress integrale0
- Outcome
- anthocyanins, total phenols, and color intensity of red winese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield, berry weight, anthocyanins, total phenols, and color intensity of red wines were closely correlated with the water stress integral”
e1“Vitis vinifera cv. Bobal/161-49”
The same questions in other papers
irrigation · yield · Vitis vinifera (wine grape)Positive and negative results
23 papers in the same direction as this paper · 16 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- positive
37 papers more in this group
See all 41 papers →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.