Abstract
Improving berry skin coloration is one of the major challenges in the tropical and subtropical viticulture. In this paper we aimed to document the effects of girdling at veraison on berry coloration and quality in grapevines on different rootstocks and we assessed the seasonal variations of girdling effects in the subtropical double cropping system. In the first experiment, gird-ling at veraison was tested in 'Kyoho' on 5C rootstocks. In the second experiment, own-rooted 'Kyoho', 5C or 1202C rootstocks were compared. Vines were trained to a horizontal overhead trellis with a single trunk and two short arms. One arm of each vine was girdled at veraison and the other arm served as the control. Girdling at veraison significantly improved skin color of berries from own-rooted vines or 5C rootstocks in the summer cropping cycle but was less effective in the winter cropping cycle. Girdling improved total soluble solids in own-rooted vines in the summer cropping cycle and in vines on 1202C in the winter cropping cycle. Girdling made in the winter cropping cycle did not completely heal until post-bloom in the following spring and reduced length of the fruiting shoot, number of leaves per shoot, and length of inflorescences of the next summer cropping cycle. We concluded that girdling at veraison is a good practice to improve berry color and quality for the summer cropping cycle but is not recommended for the winter cropping cycle.
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Claims 8
Claim · model-written summary
Girdling at veraison significantly improved summer berry skin color in own-rooted vines and was less effective in winter.
- Material
- own-rooted vinese0
- Treatment
- Girdling at veraisone0
- Outcome
- skin color of berriese0
- Direction
- improvede0
- Qualifier
- summer cropping cycle but was less effective in the winter cropping cyclee0
VitisNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Girdling at veraison significantly improved skin color of berries from own-rooted vines or 5C rootstocks in the summer cropping cycle but was less effective in the winter cropping cycle.”
t0“grapevines”
Claim · model-written summary
Girdling at veraison significantly improved summer berry skin color on 5C rootstocks and was less effective in winter.
- Material
- 5Ce0
- Treatment
- Girdling at veraisone0
- Outcome
- skin color of berriese0
- Direction
- improvede0
- Qualifier
- summer cropping cycle but was less effective in the winter cropping cyclee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Girdling at veraison significantly improved skin color of berries from own-rooted vines or 5C rootstocks in the summer cropping cycle but was less effective in the winter cropping cycle.”
t0“grapevines”
Claim · model-written summary
Girdling improved total soluble solids in own-rooted vines in summer.
- Material
- own-rooted vinese0
- Treatment
- Girdlinge0
- Outcome
- total soluble solidse0
- Direction
- improvede0
- Qualifier
- summer cropping cyclee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Girdling improved total soluble solids in own-rooted vines in the summer cropping cycle and in vines on 1202C in the winter cropping cycle.”
t0“grapevines”
Claim · model-written summary
Girdling improved total soluble solids on 1202C in winter.
- Material
- 1202Ce0
- Treatment
- Girdlinge0
- Outcome
- total soluble solidse0
- Direction
- improvede0
- Qualifier
- winter cropping cyclee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Girdling improved total soluble solids in own-rooted vines in the summer cropping cycle and in vines on 1202C in the winter cropping cycle.”
t0“grapevines”
Claim · model-written summary
Winter girdling did not completely heal until post-bloom the following spring.
- Treatment
- Girdling made in the winter cropping cyclee0
- Outcome
- did not completely heal until post-bloom in the following springe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Girdling made in the winter cropping cycle did not completely heal until post-bloom in the following spring”
t0“grapevines”
Claim · model-written summary
Winter girdling reduced fruiting-shoot length, leaves per shoot and inflorescence length in the next summer cycle.
- Treatment
- Girdling made in the winter cropping cyclee0
- Outcome
- length of the fruiting shoot, number of leaves per shoot, and length of inflorescencese0
- Direction
- reducede0
- Qualifier
- next summer cropping cyclee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Girdling made in the winter cropping cycle did not completely heal until post-bloom in the following spring and reduced length of the fruiting shoot, number of leaves per shoot, and length of inflorescences of the next summer cropping cycle.”
t0“grapevines”
Claim · model-written summary
Girdling at veraison is recommended for summer berry color and quality.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We concluded that girdling at veraison is a good practice to improve berry color and quality for the summer cropping cycle but is not recommended for the winter cropping cycle.”
t0“grapevines”
Claim · model-written summary
Girdling at veraison is not recommended for winter cropping.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We concluded that girdling at veraison is a good practice to improve berry color and quality for the summer cropping cycle but is not recommended for the winter cropping cycle.”
t0“grapevines”
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