Abstract
The global wine industry is shifting towards organic viticulture to reduce dependence on industrial inputs, favoring organic nutrient sources like grape pomace. However, the suitability of grape pomace-based compost and vermicompost in subtropical regions remain unclear. Given the diverse responses of grapevines to fertilization under different climates and soil conditions, field studies are crucial. This research investigated whether these residues, alongside non-industrialized mineral fertilizers, can enhance soil fertility and improve grape yield and quality in subtropical climates. We found that compost and vermicompost exhibit distinct chemical compositions, leading to varied patterns of nutrient release in soils. However, grapevines displayed minimal to negligible responses in terms of leaf tissue levels nutrients. Notably, “Isabella” grapevines displayed a reduction in grape yield with organic fertilizer application and remained unresponsive to mineral fertilization. While there were no substantial alterations in must composition, “Isabella” grapevines demonstrated elevated levels of anthocyanins when cultivated with mineral fertilizer. In contrast, “Chardonnay” grapevines exhibited no changes in both grape yield and quality in response to the various fertilization treatments examined. While organic and mineral fertilizers may have distinct chemical compositions and release patterns, their effectiveness in improving grape yield and quality appears to vary significantly among different grape cultivars.
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Claims 8
Claim · model-written summary
Isabella grapevines had reduced grape yield with organic fertilizer application.
VitisNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1““Isabella” grapevines displayed a reduction in grape yield with organic fertilizer application and remained unresponsive to mineral fertilization”
Claim · model-written summary
Isabella grapevines were unresponsive in grape yield to mineral fertilization.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1““Isabella” grapevines displayed a reduction in grape yield with organic fertilizer application and remained unresponsive to mineral fertilization”
Claim · model-written summary
Isabella grapevines had elevated anthocyanin levels when cultivated with mineral fertilizer.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1““Isabella” grapevines demonstrated elevated levels of anthocyanins when cultivated with mineral fertilizer”
Claim · model-written summary
Must composition was not substantially altered by the fertilization treatments.
- Outcome
- must compositione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“While there were no substantial alterations in must composition, “Isabella” grapevines demonstrated elevated levels of anthocyanins when cultivated with mineral fertilizer”
Claim · model-written summary
Chardonnay grapevines showed no change in grape yield and quality under the fertilization treatments.
- Material
- Chardonnaye1
- Treatment
- various fertilization treatmentse1
- Outcome
- grape yield and qualitye1
- Direction
- no changese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1““Chardonnay” grapevines exhibited no changes in both grape yield and quality in response to the various fertilization treatments examined”
Claim · model-written summary
Grapevines showed minimal to negligible responses in leaf tissue nutrient levels.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“However, grapevines displayed minimal to negligible responses in terms of leaf tissue levels nutrients”
Claim · model-written summary
Compost and vermicompost have distinct chemical compositions, leading to varied patterns of nutrient release in soils.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“We found that compost and vermicompost exhibit distinct chemical compositions, leading to varied patterns of nutrient release in soils.”
e2“Given the diverse responses of grapevines to fertilization under different climates and soil conditions”
Claim · model-written summary
The effectiveness of organic and mineral fertilizers on grape yield and quality varies significantly among grape cultivars.
- Material
- different grape cultivarse1
- Treatment
- organic and mineral fertilizerse1
- Outcome
- effectiveness in improving grape yield and qualitye1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“While organic and mineral fertilizers may have distinct chemical compositions and release patterns, their effectiveness in improving grape yield and quality appears to vary significantly among different grape cultivars”
e2“Given the diverse responses of grapevines to fertilization under different climates and soil conditions”
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