Abstract
The impact of mechanical thinning using a machine harvester on yield components and fruit composition of Tempranillo and Grenache (Vitis vinifera L.) vines was investigated. Experiments were conducted in two Spanish vineyards, both trained to a vertical shoot-positioned canopy over two consecutive seasons. The height of the harvester and the position of the bow rods were adjusted so that fruit was removed by the vibration of the canopy caused by the bow rods striking the vine trunks. The Tempranillo was thinned ~10 days before veraison and the Grenache was thinned when 10 to 15% of berries were colored. Mechanical thinning significantly reduced berry number per cluster, cluster weight, and cluster compactness; a similar amount of fruit (~65%) was removed from both varieties. Botrytis incidence was reduced by mechanical thinning of the Grenache in 2007 and was otherwise not affected by thinning treatments. Soluble solid concentration was higher under mechanical thinning treatments over the two seasons in Tempranillo and in 2006 in Grenache, suggesting that damage to the canopy was minimal. Phenolic concentration (both berry and berry fresh weight basis) was higher in fruit from the mechanically thinned vines compared with the control (unthinned) in Tempranillo in 2007 and only on a per berry basis in Grenache in 2006. Mechanical thinning conducted with a machine harvester has the potential to be a cost-effective technique to regulate yield in vineyards with vertical shoot-positioned canopies.
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Claims 9
Claim · model-written summary
Mechanical thinning significantly reduced berry number per cluster, cluster weight and cluster compactness compared with unthinned control.
- Taxon
- Vitis vinifera
Vitis viniferae0 - Treatment
- Mechanical thinninge1
- Outcome
- berry number per cluster, cluster weight, and cluster compactnesse1
- Direction
- reducede1
- Comparator
- control (unthinned)e2
- Setting
- Spanish vineyardse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tempranillo and Grenache (Vitis vinifera L.) vines”
e1“Mechanical thinning significantly reduced berry number per cluster, cluster weight, and cluster compactness”
e2“compared with the control (unthinned)”
e7“Experiments were conducted in two Spanish vineyards”
Claim · model-written summary
Mechanical thinning removed a similar amount of fruit, about 65%, from both varieties.
- Taxon
- Vitis viniferaVitis viniferae0
- Outcome
- a similar amount of fruite3
- Value
- ~65%e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tempranillo and Grenache (Vitis vinifera L.) vines”
e3“a similar amount of fruit (~65%) was removed from both varieties”
Claim · model-written summary
Mechanical thinning reduced Botrytis incidence in Grenache in 2007.
- Taxon
- Vitis viniferaVitis viniferae0
- Material
- Grenachee4
- Treatment
- mechanical thinninge4
- Outcome
- Botrytis incidencee4
- Direction
- reducede4
- Qualifier
- in 2007e4
BotrytisNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tempranillo and Grenache (Vitis vinifera L.) vines”
e4“Botrytis incidence was reduced by mechanical thinning of the Grenache in 2007 and was otherwise not affected by thinning treatments”
Claim · model-written summary
Botrytis incidence was otherwise not affected by thinning treatments.
- Taxon
- Vitis viniferaVitis viniferae0
- Treatment
- thinning treatmentse4
- Outcome
- Botrytis incidencee4
- Direction
- not affectede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tempranillo and Grenache (Vitis vinifera L.) vines”
e4“Botrytis incidence was reduced by mechanical thinning of the Grenache in 2007 and was otherwise not affected by thinning treatments”
Claim · model-written summary
Soluble solid concentration was higher under mechanical thinning in Tempranillo over the two seasons.
- Taxon
- Vitis viniferaVitis viniferae0
- Material
- Tempranilloe5
- Treatment
- mechanical thinning treatmentse5
- Outcome
- Soluble solid concentratione5
- Direction
- highere5
- Setting
- over the two seasonse5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tempranillo and Grenache (Vitis vinifera L.) vines”
e5“Soluble solid concentration was higher under mechanical thinning treatments over the two seasons in Tempranillo and in 2006 in Grenache”
Claim · model-written summary
Soluble solid concentration was higher under mechanical thinning in Grenache in 2006.
- Taxon
- Vitis viniferaVitis viniferae0
- Material
- Grenachee5
- Treatment
- mechanical thinning treatmentse5
- Outcome
- Soluble solid concentratione5
- Direction
- highere5
- Setting
- in 2006e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tempranillo and Grenache (Vitis vinifera L.) vines”
e5“Soluble solid concentration was higher under mechanical thinning treatments over the two seasons in Tempranillo and in 2006 in Grenache”
Claim · model-written summary
Phenolic concentration on a berry and berry fresh weight basis was higher in mechanically thinned Tempranillo vines in 2007.
- Taxon
- Vitis viniferaVitis viniferae0
- Material
- Tempranilloe2
- Treatment
- mechanically thinned vinese2
- Outcome
- Phenolic concentratione2
- Direction
- highere2
- Qualifier
- both berry and berry fresh weight basise2
- Comparator
- control (unthinned)e2
- Setting
- in 2007e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tempranillo and Grenache (Vitis vinifera L.) vines”
e2“Phenolic concentration (both berry and berry fresh weight basis) was higher in fruit from the mechanically thinned vines compared with the control (unthinned) in Tempranillo in 2007 and only on a per berry basis in Grenache in 2006”
Claim · model-written summary
Phenolic concentration on a per berry basis was higher in mechanically thinned Grenache vines in 2006.
- Taxon
- Vitis viniferaVitis viniferae0
- Material
- Grenachee2
- Treatment
- mechanically thinned vinese2
- Outcome
- Phenolic concentratione2
- Direction
- highere2
- Qualifier
- only on a per berry basise2
- Comparator
- control (unthinned)e2
- Setting
- in 2006e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tempranillo and Grenache (Vitis vinifera L.) vines”
e2“Phenolic concentration (both berry and berry fresh weight basis) was higher in fruit from the mechanically thinned vines compared with the control (unthinned) in Tempranillo in 2007 and only on a per berry basis in Grenache in 2006”
Claim · model-written summary
Mechanical thinning with a machine harvester has the potential to be a cost-effective technique to regulate yield in vineyards with vertical shoot-positioned canopies.
- Taxon
- Vitis viniferaVitis viniferae0
- Outcome
- cost-effective technique to regulate yielde6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tempranillo and Grenache (Vitis vinifera L.) vines”
e6“Mechanical thinning conducted with a machine harvester has the potential to be a cost-effective technique to regulate yield in vineyards with vertical shoot-positioned canopies”
The same questions in other papers
pruning · yield · Vitis vinifera (wine grape)Positive and negative results
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- negative
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See all 95 papers →pruning · Botrytis · Vitis vinifera (wine grape)Results agree
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See all 10 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.