Abstract
The interaction of mechanized pruning systems and soil organic amending is a way to increase vine productivity. However, since the increase in productivity may have effects on grape composition, this study aims to understand the effects of the interaction between these two practices. Two trial fields were implemented on Shiraz vineyards in 2 different wine regions. Mechanical hedge pruning was compared with hand spur pruning and four different organic amendments were tested: biochar; municipal solid waste compost; cattle manure; sewage sludge. Mechanical pruning reduced grapes total soluble solids and pH and no effects on other parameters. Organic amendments also reduced total soluble solids, especially sewage sludge, and tended to reduce total anthocyanins and total phenols. The effect of the interaction between both factors on grape composition was never significant. A negative relation between yield and total soluble solids was observed, while total acidity had no relation with yield. Total anthocyanins were also negatively related with yield. A positive relation between grapes sugar content and total anthocyanins is reported. The presented results show that the interaction between mechanical pruning and soil organic amending is a powerful tool to increase productivity without significantly affect grapes composition. However, some reduction in some quality parameters show that however mechanical pruning does not significantly affect grape quality, the choice of the organic amendment and its amount, must be done considering the destiny of produced grapes.
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Claims 12
Claim · model-written summary
Mechanical pruning reduced grape total soluble solids.
Not reportedComparator
Verbatim
e0“Mechanical pruning reduced grapes total soluble solids and pH”
Claim · model-written summary
Mechanical pruning reduced grape pH.
Not reportedComparator
Verbatim
e0“Mechanical pruning reduced grapes total soluble solids and pH”
Claim · model-written summary
Mechanical pruning had no effect on other grape composition parameters.
Not reportedComparator
Verbatim
e0“Mechanical pruning reduced grapes total soluble solids and pH and no effects on other parameters”
Claim · model-written summary
Organic amendments reduced grape total soluble solids, especially sewage sludge.
- Taxon
- Syraht0
- Treatment
- Organic amendmentse0
- Outcome
- total soluble solidse0
- Direction
- reducede0
- Qualifier
- especially sewage sludgee0
Not reportedComparator
Verbatim
e0“Organic amendments also reduced total soluble solids, especially sewage sludge”
t0“vineyards of Syrah”
Claim · model-written summary
Organic amendments tended to reduce total anthocyanins and total phenols.
- Taxon
- Syraht0
- Treatment
- Organic amendmentse0
- Outcome
- total anthocyanins and total phenolse0
- Direction
- tended to reducee0
Not reportedComparator
Verbatim
e0“Organic amendments also reduced total soluble solids, especially sewage sludge, and tended to reduce total anthocyanins and total phenols”
t0“vineyards of Syrah”
Claim · model-written summary
The interaction of pruning and amendments had no significant effect on grape composition.
Not reportedComparatorDirection
Verbatim
e0“The effect of the interaction between both factors on grape composition was never significant”
t0“vineyards of Syrah”
Claim · model-written summary
Yield was negatively related to grape total soluble solids.
Verbatim
e0“A negative relation between yield and total soluble solids was observed”
t0“vineyards of Syrah”
Claim · model-written summary
Total acidity had no relation with yield.
Verbatim
e0“total acidity had no relation with yield”
t0“vineyards of Syrah”
Claim · model-written summary
Total anthocyanins were negatively related to yield.
Verbatim
e0“Total anthocyanins were also negatively related with yield”
t0“vineyards of Syrah”
Claim · model-written summary
Grape sugar content was positively related to total anthocyanins.
Verbatim
e0“A positive relation between grapes sugar content and total anthocyanins is reported”
Claim · model-written summary
The authors conclude that combined mechanical pruning and soil organic amending can increase productivity.
- Taxon
- Syraht0
- Treatment
- interaction between mechanical pruning and soil organic amendinge0
- Outcome
- productivitye0
- Direction
- increasee0
Not reportedComparator
Verbatim
e0“the interaction between mechanical pruning and soil organic amending is a powerful tool to increase productivity”
t0“vineyards of Syrah”
Claim · model-written summary
The authors advise choosing amendment type and amount according to the grapes’ intended use.
Verbatim
e0“the choice of the organic amendment and its amount, must be done considering the destiny of produced grapes”
The same questions in other papers
pruning · quality: sugar starch · VitisResults differ
19 papers in the same direction as this paper · 41 in the opposite direction
- positive
- positive
- positive
57 papers more in this group
See all 61 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.