Abstract
‘Vanessa,’ a red seedless table grape, is often recommended for planting in cool climates because berries have excellent color, crisp texture, and flavor. However, in its natural condition ‘Vanessa’ clusters tend to be loose with small berries and frequent shot berries. The application of gibberellic acid (GA) to correct these deficiencies was evaluated for four growing seasons at concentrations of 25 and 50 ppm when berry diameters averaged 3, 5, 7 and 9 mm. GA increased yield, cluster weight, berry weight, fruits soluble solids and juice pH and decreased the number of shot berries per cluster and cluster compactness. Applications of GA at 50 ppm when berries averaged 5 mm in diameter were most effective for increasing berry weight and fruit soluble solids while reducing the occurrence of shot berry. Cane pruning weights recorded for vines over the 4-year period indicate no reduction in vine size as a result of GA applications made directly to clusters.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 5
Claim · model-written summary
GA increased grape yield, cluster weight and berry weight.
VitisNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA increased yield, cluster weight, berry weight, fruits soluble solids and juice pH”
t0“‘Vanessa’ Grapevines”
t1“GA increased”
Claim · model-written summary
GA increased fruit soluble solids and juice pH.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA increased yield, cluster weight, berry weight, fruits soluble solids and juice pH”
t0“‘Vanessa’ Grapevines”
t1“GA increased”
Claim · model-written summary
GA reduced shot berries per cluster and cluster compactness.
- Material
- ‘Vanessa’t0
- Treatment
- GAt1
- Outcome
- number of shot berries per cluster and cluster compactnesse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreased the number of shot berries per cluster and cluster compactness.”
t0“‘Vanessa’ Grapevines”
t1“GA increased”
Claim · model-written summary
GA at 50 ppm applied when berries averaged 5 mm was most effective for increasing berry weight and soluble solids and reducing shot berries.
- Material
- ‘Vanessa’t0
- Treatment
- GA at 50 ppme0
- Outcome
- berry weight and fruit soluble solidse0
- Direction
- increasinge0
- Qualifier
- when berries averaged 5 mm in diametere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applications of GA at 50 ppm when berries averaged 5 mm in diameter were most effective for increasing berry weight and fruit soluble solids while reducing the occurrence of shot berry.”
t0“‘Vanessa’ Grapevines”
t1“GA increased”
Claim · model-written summary
Direct GA cluster sprays did not reduce vine size over four years.
- Material
- ‘Vanessa’t0
- Treatment
- GA applications made directly to clusterse0
- Outcome
- vine sizee0
- Direction
- no reductione0
- Qualifier
- 4-year periode0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cane pruning weights recorded for vines over the 4-year period indicate no reduction in vine size as a result of GA applications made directly to clusters.”
t0“‘Vanessa’ Grapevines”
t1“GA increased”
The same questions in other papers
Gibberellic acid · quality: sugar starch · VitisResults differ
15 papers in the same direction as this paper · 5 in the opposite direction
- negative
- negative
- no effect
17 papers more in this group
See all 21 papers →Gibberellic acid · molecular: metabolites · VitisResults differ
22 papers in the same direction as this paper · 7 in the opposite direction
- negative
- no effect
- no effect
26 papers more in this group
See all 30 papers →Gibberellic acid · growth · VitisResults differ
7 papers in the same direction as this paper · 26 in the opposite direction
- positive
- positive
- positive
30 papers more in this group
See all 34 papers →Gibberellic acid · yield · VitisResults differ
38 papers in the same direction as this paper · 7 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- negative
43 papers more in this group
See all 47 papers →cluster · growth · VitisPositive and negative results
4 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- no effect
2 papers more in this group
See all 6 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.