Intervention effectmodel-written summary

Foliar fertilizers increased grape fruit hardness, vitamin C and sugar content.

A claim from Effect of Foliar Fertilizer on Grape Quality · 2011

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Foliar fertilizers increased grape fruit hardness, vitamin C and sugar content.

Taxon
grapet0
Treatment
foliar fertilizerse1
Outcome
hardness,vitamin C,sugar contente0
Direction
increasede0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

Verbatim

e0

“hardness,vitamin C,sugar content,sugar-acid were increased”

✓ located verbatim in the source · abstract, characters 301–359
t0

“Grape”

✓ located verbatim in the source · title, characters 31–36
e1

“sprayed with several foliar fertilizers”

✓ located verbatim in the source · abstract, characters 54–93

Title

Effect of Foliar Fertilizer on Grape Quality

Yaozhao Xu Northern Horticulture 2011

Other claims from this paper (4)

Record rev-2dcbb12b2f5df1c8ab3ab46ee777a889720a6cceb11c742dc6fbc13a696efe73 · schema claims-v0.9 · position 2 in the model’s answer

application · quality: sugar starch · VitisPositive and negative results

39 papers: 34 positive, 5 negative or no effect

33 papers in the same direction as this claim · 5 in the opposite direction

  1. no effect
    Sprays did not negatively affect berry firmness, TSS and acidity.

    Effect of pre-harvest calcium chloride and ethanol spray on quality of 'El-Bayadi' table grapes during storage · 2015

    Opposite direction

  2. negative
    Chronic weekly sprays at pH 2.75 reduced berry soluble solids only in the cultivars de Chaunac and Ives.

    Effects of Acid Rain on Grapevines · 1983

    Opposite direction

  3. negative
    With Cropmax at 2.5 mL L-1, grape acidity remained high.

    Effects of exogenous growth regulators on agrobiological, technological and physiological characteristics of an interspecific grapevine cultivar · 2022

    Opposite direction

  4. negative
    Foliar urea decreased dormant vine TNC.

    Growth and Fruiting of Young `Concord' Grapevines in Relation to Reserve Nitrogen and Carbohydrates · 2004

    Opposite direction

  5. no effect
    Bacillus lateosporus foliar spray did not influence grape Brix degree or fruit enlargement.

    Fruit color improvement by Bacillus lateosporus in grapes. · 2007

    Opposite direction

  6. positive
    A 50 ml∙L-1 humic acid foliar spray significantly increased grapevine total soluble solids.

    Yield, berry quality and physiological response of grapevine to foliar humic acid application · 2018

    Same direction

  7. positive
    Humic acid application increased the °Brix/acidity ratio.

    Influence of foliar applications of humic acids on yield and fruit quality of table grape cv. Italia · 2008

    Same direction

  8. positive
    The main effects of foliar Mg and Zn application were significant at the 1% level in lowering juice acidity and the K/Mg ratio.

    Effects of the Foliar Application of Magnesium and Zinc on the Yield and Quality of Three Grape Cultivars Grown in the Calcareous Soils of Iran · 2010

    Same direction

30 papers more in this group

See all 39 papers →

fertilization · quality: sugar starch · VitisPositive and negative results

40 papers: 32 positive, 8 negative or no effect

31 papers in the same direction as this claim · 8 in the opposite direction

  1. negative
    Nitrogen fertilizer generally lowered grape soluble solids relative to control, regardless of timing.

    Effect of Nitrogen Fertilizer Timing and Rate on Inorganic Nitrogen Status, Fruit Composition, and Yield of Grapevines · 1994 · compared with C0

    Opposite direction

  2. negative
    Fertilization reduced soluble solids regardless of timing.

    Influence of Timing of Nitrogen Fertilizer Application on Grapevines in the San Joaquin Valley · 1991

    Opposite direction

  3. negative
    NPK and NP3K reduced juice soluble solids percentage.

    Response of Mature Vines ofVitis LabruscaL. CV Concord to Applications of Phosphorus and Potassium over an Eight-Year Span in Pennsylvania · 1980

    Opposite direction

  4. no effect
    Manuring combinations did not significantly affect table grape yield, bunch weight, berry weight, soluble solids or acidity.

    Effects of some organic fertilizers on yield and quality of round seedless (=round sultana)Grape variety · 2005

    Opposite direction

  5. negative
    Added fertilizers significantly decreased grape-vine sugar concentration.

    FERTILIZATION OF VINE BY A 5-AMINOLEVULINIC ACID-BASED FERTILIZER AND ITS PROFITABILITY · 2013

    Opposite direction

  6. negative
    Added fertilizers significantly decreased grape-vine sugar concentration.

    FERTILIZATION OF VINE BY A 5-AMINOLEVULINIC ACID-BASED FERTILIZER AND ITS PROFITABILITY · 2013

    Opposite direction

  7. negative
    Long liquid fertilizer treatments decreased berry skin anthocyanin and soluble solids.

    Effect of Period of Liquid Fertilizer Application and Girdling on Fruit Quality and Vine Growth of 'Aki Queen' Grape · 2012

    Opposite direction

  8. no effect
    Total soluble solids and juice pH were largely unaffected by potassium fertigation.

    Potassium Fertigation Enhances Yield and Berry Development in Table Grapevines Under Semi-Arid Mediterranean Conditions · 2026

    Opposite direction

31 papers more in this group

See all 40 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.