Abstract
In viticulture, the imposition of managed water deficits is a strategy which has been used to increase both water use efficiency and winemaking quality in arid climates. Partial defoliation early in the season is another innovative practice that may also be used as an aid in regulating yield components and improving fruit quality. The aim of this work was to evaluate the effects of managed water stress and early season partial defoliation on crop yield and quality in two autochthonous (‘Frappato’ and ‘Nero d’Avola’) and two international varieties (‘Syrah’ and ‘Cabernet Sauvignon’) growing in an arid environment. The four treatments were: (i) no leaf removal, un-irrigated, (ii) no leaf removal, irrigated at 30 % of estimated crop evapotranspiration (ETc), (iii) partial leaf removal, un-irrigated, and (iv) partial leaf removal, irrigated at 30 % of estimated ETc. The results confirm the effectiveness of partial defoliation in yield management which leads to smaller clusters. Managed water stress was also an effective strategy for reducing berry size, improving must quality and generally enhancing anthocyanin accumulation.
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Claims 4
Claim · model-written summary
Partial defoliation led to smaller winegrape clusters.
- Taxon
- winegrape
Vitis viniferat0 - Treatment
- partial defoliatione0
- Outcome
- clusterse0
- Direction
- smallere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“winegrape varieties”
e0“partial defoliation in yield management which leads to smaller clusters”
Claim · model-written summary
Managed water stress reduced winegrape berry size.
- Taxon
- winegrapeVitis viniferat0
- Treatment
- Managed water stresse0
- Outcome
- berry sizee0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“winegrape varieties”
e0“Managed water stress was also an effective strategy for reducing berry size, improving must quality and generally enhancing anthocyanin accumulation.”
Claim · model-written summary
Managed water stress improved winegrape must quality.
- Taxon
- winegrapeVitis viniferat0
- Treatment
- Managed water stresse0
- Outcome
- must qualitye0
- Direction
- improvinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“winegrape varieties”
e0“Managed water stress was also an effective strategy for reducing berry size, improving must quality and generally enhancing anthocyanin accumulation.”
Claim · model-written summary
Managed water stress generally enhanced winegrape anthocyanin accumulation.
- Taxon
- winegrapeVitis viniferat0
- Treatment
- Managed water stresse0
- Outcome
- anthocyanin accumulatione0
- Direction
- enhancinge0
- Qualifier
- generallye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“winegrape varieties”
e0“Managed water stress was also an effective strategy for reducing berry size, improving must quality and generally enhancing anthocyanin accumulation.”
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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.