Abstract
ABSTRACT Mature ‘Vidal blanc’ and ‘Chardonnay’ (Vitis sp.) grapevines were cluster thinned at different times to determine the influence on vine growth and fruiting. Cluster thinning to one cluster per shoot decreased yield and increased juice soluble solids concentrations. In one three-year study, cane node length (4,8 or 12 nodes) was imposed to develop different canopy densities. There was no interaction between cluster thinning time and cane node length. Clusters produced on longer canes had reduced cluster and berry weight, but cane length had no effect on juice components. A comparison of cluster thinning times from bloom to near veraison on ‘Vidal blanc’ showed the increase in cluster weight and juice pH became greater as time of cluster thinning was delayed. Berry weight reached a maximum when vines were cluster thinned two weeks after bloom. Juice total soluble solids of both ‘Vidal blanc’ and ‘Chardonnay’ was increased equally by all times of cluster thinning. There was no effect of cluster thinning on pruning weight, the distribution or origin of shoots, or leaf mineral levels. These studies show that positive effects on fruit quality occur by cluster thinning wine grapes over the growing season prior to veraison.
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Claims 10
Claim · model-written summary
Cluster thinning to one cluster per shoot decreased grapevine yield
VitisNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mature ‘Vidal blanc’ and ‘Chardonnay’ (Vitis sp.) grapevines were cluster thinned at different times to determine the influence on vine growth and fruiting”
e1“Cluster thinning to one cluster per shoot decreased yield and increased juice soluble solids concentrations”
Claim · model-written summary
Cluster thinning to one cluster per shoot increased juice soluble solids concentrations in grapevines
- Treatment
- Cluster thinning to one cluster per shoote1
- Outcome
- juice soluble solids concentrationse1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mature ‘Vidal blanc’ and ‘Chardonnay’ (Vitis sp.) grapevines were cluster thinned at different times to determine the influence on vine growth and fruiting”
e1“Cluster thinning to one cluster per shoot decreased yield and increased juice soluble solids concentrations”
Claim · model-written summary
Clusters on longer canes (node length 12 nodes or more) had reduced cluster and berry weight
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mature ‘Vidal blanc’ and ‘Chardonnay’ (Vitis sp.) grapevines were cluster thinned at different times to determine the influence on vine growth and fruiting”
e2“Clusters produced on longer canes had reduced cluster and berry weight”
e3“cane node length (4,8 or 12 nodes) was imposed to develop different canopy densities”
Claim · model-written summary
Cane length had no effect on juice components of grapevines
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mature ‘Vidal blanc’ and ‘Chardonnay’ (Vitis sp.) grapevines were cluster thinned at different times to determine the influence on vine growth and fruiting”
e4“cane length had no effect on juice components”
Claim · model-written summary
No interaction was found between cluster thinning time and cane node length in grapevines
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mature ‘Vidal blanc’ and ‘Chardonnay’ (Vitis sp.) grapevines were cluster thinned at different times to determine the influence on vine growth and fruiting”
e5“There was no interaction between cluster thinning time and cane node length”
Claim · model-written summary
Later cluster thinning of Vidal blanc grapevines increased cluster weight and juice pH more
- Material
- Vidal blance6
- Treatment
- time of cluster thinninge6
- Outcome
- cluster weight and juice pHe6
- Direction
- greatere6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mature ‘Vidal blanc’ and ‘Chardonnay’ (Vitis sp.) grapevines were cluster thinned at different times to determine the influence on vine growth and fruiting”
e6“A comparison of cluster thinning times from bloom to near veraison on ‘Vidal blanc’ showed the increase in cluster weight and juice pH became greater as time of cluster thinning was delayed”
Claim · model-written summary
Berry weight of grapevines was maximal when vines were cluster thinned two weeks after bloom
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mature ‘Vidal blanc’ and ‘Chardonnay’ (Vitis sp.) grapevines were cluster thinned at different times to determine the influence on vine growth and fruiting”
e7“Berry weight reached a maximum when vines were cluster thinned two weeks after bloom”
Claim · model-written summary
Cluster thinning had no effect on pruning weight, shoot distribution or origin, or leaf mineral levels
- Treatment
- cluster thinninge2
- Outcome
- pruning weight, the distribution or origin of shoots, or leaf mineral levelse2
- Direction
- no effecte2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mature ‘Vidal blanc’ and ‘Chardonnay’ (Vitis sp.) grapevines were cluster thinned at different times to determine the influence on vine growth and fruiting”
e2“There was no effect of cluster thinning on pruning weight, the distribution or origin of shoots, or leaf mineral levels”
Claim · model-written summary
Juice total soluble solids of Vidal blanc increased equally at all cluster thinning times
- Material
- Vidal blance3
- Treatment
- all times of cluster thinninge3
- Outcome
- Juice total soluble solidse3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mature ‘Vidal blanc’ and ‘Chardonnay’ (Vitis sp.) grapevines were cluster thinned at different times to determine the influence on vine growth and fruiting”
e3“Juice total soluble solids of both ‘Vidal blanc’ and ‘Chardonnay’ was increased equally by all times of cluster thinning”
Claim · model-written summary
Juice total soluble solids of Chardonnay increased equally at all cluster thinning times
- Material
- Chardonnaye3
- Treatment
- all times of cluster thinninge3
- Outcome
- Juice total soluble solidse3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mature ‘Vidal blanc’ and ‘Chardonnay’ (Vitis sp.) grapevines were cluster thinned at different times to determine the influence on vine growth and fruiting”
e3“Juice total soluble solids of both ‘Vidal blanc’ and ‘Chardonnay’ was increased equally by all times of cluster thinning”
The same questions in other papers
cluster · nutrient: content · VitisResults agree
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cluster · quality: sugar starch · VitisResults agree
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- positive
- positive
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See all 14 papers →pruning · quality: sugar starch · VitisResults differ
40 papers in the same direction as this paper · 20 in the opposite direction
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See all 61 papers →pruning · nutrient: content · VitisPositive and negative results
3 papers in the same direction as this paper · 5 in the opposite direction
- positive
- positive
- positive
5 papers more in this group
See all 9 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.