Abstract
Nitrogen is a key macronutrient for the quantitative and qualitative yield of grapes; in addition, it influences the development and reproduction of grape pests. The multiple effects of different nitrogen rates were investigated on the red berry cultivar ‘Carignano’ and the grape pest Planococcus ficus in a two-year field trial. Different amounts of ammonium nitrate were compared: 0, 80 and 160 Units ha−1 for mineral nitrogen. The amount of nitrogen fertilization supplied influenced the nitrogen status of vines and increased the pruning weight and leaf area, as well as the overall grape yield, by increasing the cluster weight. However, doubling the nitrogen rate did not generally increase the vegetative and productive parameters of grapevines. At harvest, nitrogen supply did not influence the anthocyanin content, tritatable acidity, and soluble solids, although the latter parameter showed a clear, yet not significant, decreasing trend. Planococcus ficus exhibited higher fecundity, survival and shorter development time on grapevines provided with nitrogen, whereas its fertility was unaffected by nitrogen fertilization. Ultimately, nitrogen had a direct and positive effect on grape yield and vine mealybug development, highlighting the importance of integrated cultural and pest control practices to promote grape production.
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Claims 9
Claim · model-written summary
Nitrogen fertilization increased pruning weight and leaf area, as well as overall grape yield
- Taxon
- grapee1
- Material
- Carignanoe1
- Treatment
- nitrogen fertilizatione2
- Outcome
- pruning weight and leaf area, as well as the overall grape yielde2
- Direction
- increasede2
- Setting
- two-year field triale1
Not reportedComparator
Verbatim
e1“The multiple effects of different nitrogen rates were investigated on the red berry cultivar ‘Carignano’ and the grape pest Planococcus ficus in a two-year field trial.”
e2“The amount of nitrogen fertilization supplied influenced the nitrogen status of vines and increased the pruning weight and leaf area, as well as the overall grape yield, by increasing the cluster weight”
Claim · model-written summary
Nitrogen fertilization increased cluster weight, which raised grape yield
- Taxon
- grapee1
- Material
- Carignanoe1
- Treatment
- nitrogen fertilizatione2
- Outcome
- cluster weighte2
- Direction
- increasinge2
- Setting
- two-year field triale1
Not reportedComparator
Verbatim
e1“The multiple effects of different nitrogen rates were investigated on the red berry cultivar ‘Carignano’ and the grape pest Planococcus ficus in a two-year field trial.”
e2“The amount of nitrogen fertilization supplied influenced the nitrogen status of vines and increased the pruning weight and leaf area, as well as the overall grape yield, by increasing the cluster weight”
Claim · model-written summary
Doubling the nitrogen rate did not generally increase vegetative and productive parameters of grapevines
- Material
- Carignanoe1
- Treatment
- doubling the nitrogen ratee3
- Outcome
- vegetative and productive parameterse3
- Direction
- did not generally increasee3
- Setting
- two-year field triale1
VitisNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The multiple effects of different nitrogen rates were investigated on the red berry cultivar ‘Carignano’ and the grape pest Planococcus ficus in a two-year field trial.”
e3“doubling the nitrogen rate did not generally increase the vegetative and productive parameters of grapevines”
Claim · model-written summary
Nitrogen supply did not influence anthocyanin content or titratable acidity at harvest
- Taxon
- grapee1
- Material
- Carignanoe1
- Organ / stage
- At harveste4
- Treatment
- nitrogen supplye4
- Outcome
- anthocyanin content, tritatable aciditye4
- Direction
- did not influencee4
Not reportedComparator
Verbatim
e1“The multiple effects of different nitrogen rates were investigated on the red berry cultivar ‘Carignano’ and the grape pest Planococcus ficus in a two-year field trial.”
e4“At harvest, nitrogen supply did not influence the anthocyanin content, tritatable acidity, and soluble solids, although the latter parameter showed a clear, yet not significant, decreasing trend”
Claim · model-written summary
Soluble solids showed a decreasing trend under nitrogen supply that was not significant
- Taxon
- grapee1
- Material
- Carignanoe1
- Organ / stage
- At harveste4
- Treatment
- nitrogen supplye4
- Outcome
- soluble solidse4
- Direction
- decreasing trende4
- Qualifier
- yet not significante4
Not reportedComparator
Verbatim
e1“The multiple effects of different nitrogen rates were investigated on the red berry cultivar ‘Carignano’ and the grape pest Planococcus ficus in a two-year field trial.”
e4“At harvest, nitrogen supply did not influence the anthocyanin content, tritatable acidity, and soluble solids, although the latter parameter showed a clear, yet not significant, decreasing trend”
Claim · model-written summary
Planococcus ficus had higher fecundity and survival on nitrogen-fertilised grapevines
- Treatment
- nitrogene5
- Interactor
- Planococcus ficus
Planococcus ficuse5pest - Outcome
- fecundity, survivale5
- Direction
- highere5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Planococcus ficus exhibited higher fecundity, survival and shorter development time on grapevines provided with nitrogen, whereas its fertility was unaffected by nitrogen fertilization”
e1“The multiple effects of different nitrogen rates were investigated on the red berry cultivar ‘Carignano’ and the grape pest Planococcus ficus in a two-year field trial.”
Claim · model-written summary
Planococcus ficus had shorter development time on nitrogen-fertilised grapevines
- Treatment
- nitrogene5
- Interactor
- Planococcus ficusPlanococcus ficuse5pest
- Outcome
- development timee5
- Direction
- shortere5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Planococcus ficus exhibited higher fecundity, survival and shorter development time on grapevines provided with nitrogen, whereas its fertility was unaffected by nitrogen fertilization”
e1“The multiple effects of different nitrogen rates were investigated on the red berry cultivar ‘Carignano’ and the grape pest Planococcus ficus in a two-year field trial.”
Claim · model-written summary
Fertility of Planococcus ficus was unaffected by nitrogen fertilization on grapevines
- Treatment
- nitrogen fertilizatione5
- Interactor
- Planococcus ficusPlanococcus ficuse5pest
- Outcome
- fertilitye5
- Direction
- unaffectede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Planococcus ficus exhibited higher fecundity, survival and shorter development time on grapevines provided with nitrogen, whereas its fertility was unaffected by nitrogen fertilization”
e1“The multiple effects of different nitrogen rates were investigated on the red berry cultivar ‘Carignano’ and the grape pest Planococcus ficus in a two-year field trial.”
Claim · model-written summary
Integrated cultural and pest control practices should be promoted for grape production
Verbatim
e6“highlighting the importance of integrated cultural and pest control practices to promote grape production”
The same questions in other papers
fertilization · yield · VitisResults differ
96 papers in the same direction as this paper · 9 in the opposite direction · 1 reporting no difference from an alternative
- positive
- no effect
- no effect
103 papers more in this group
See all 107 papers →nitrogen · quality: sugar starch · VitisPositive and negative results
4 papers in the same direction as this paper · 8 in the opposite direction
- positive
- positive
- positive
9 papers more in this group
See all 13 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.