Intervention effectmodel-written summary

Potassium fertilization increased tomato yield by 15.71% relative to plants without potassium.

A claim from Effects of potassium on the yield and Quality of tomato · 2005

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Potassium fertilization increased tomato yield by 15.71% relative to plants without potassium.

Treatment
fertilized with potassiume1
Outcome
yielde1
Direction
increasede1
Value
15. 71%e1
Comparator
without Ke1

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingQualifier

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“the yield of tomato fertilized with potassium increased by 15. 71% which was more than that without K”

✓ located verbatim in the source · abstract, characters 162–263

Title

Effects of potassium on the yield and Quality of tomato

Yang Xiao 2005

Other claims from this paper (12)

Record rev-cc5bdfd60d7a28db219ae71d022911676564558561d50183ab9e077cca0eab41 · schema claims-v0.9 · position 1 in the model’s answer

potassium · yield · Solanum lycopersicum (tomato)Results differ

80 papers: 67 positive, 13 negative or no effect

66 papers in the same direction as this claim · 12 in the opposite direction · 1 reporting no difference from an alternative

  1. positive
    The specified N:K ratios increased total tomato fruit yield irrespective of hydroponic system or season.

    Effects of substrate hydroponic systems and different N and K ratios on yield and quality of tomato fruit · 2018

    Same directionCites this paper

  2. no effect
    Foliar K did not increase fruit yield.

    Processing Tomato Yield and Fruit Quality Improved with Potassium Fertigation · 2005

    Opposite direction

  3. no effect
    Potassium nutrition did not influence tomato fruit yield.

    Potassium nutrition increases the lycopene content of tomato fruit · 2007

    Opposite direction

  4. no effect
    Increasing K from 200 to 600 kg K ha −1 had no effect on yield or fruit size.

    Responses of Fruit Yield and Quality of Processing Tomato to Drip‐Irrigation and Fertilizers Phosphorus and Potassium · 2011

    Opposite direction

  5. no effect
    Weekly N and K injection schedule did not affect yield or other characteristics.

    Yield of Trickle-irrigated Tomatoes as Affected by Time of N and K Application · 1990

    Opposite direction

  6. no effect
    Increasing potassium did not significantly alter tomato yield.

    Influences of nitrogen and potassium fertilizer rates on pepper and tomato yield and nutrient uptake under field conditions · 2013

    Opposite direction

  7. no effect
    Yield response did not differ significantly among K rates of 46, 140 or 280 kg/ha.

    Fresh‐market tomato response to N and K fertilization and water management practices · 1985

    Opposite direction

  8. no effect
    K source, K rate and Ca rate did not influence early or total fruit yields at either location.

    POTASSIUM SOURCE AND RATE AND CALCIUM RATE EFFECTS ON TOMATO YIELD AND QUALITY. · 1990

    Opposite direction

71 papers more in this group

See all 80 papers →

fertilization · yield · Solanum lycopersicum (tomato)Positive and negative results

978 papers: 850 positive, 128 negative or no effect

849 papers in the same direction as this claim · 104 in the opposite direction · 24 reporting no difference from an alternative

  1. no effect
    Reduced chemical fertilizer plus bio-organic fertilizer maintained tomato yields equivalent to full chemical fertilizer in pot and field trials.

    Bio-organic fertilizer with reduced rates of chemical fertilization improves soil fertility and enhances tomato yield and quality · 2020 · compared with 100% of the chemical fertilizer

    Opposite direction

  2. negative
    Yields of tomato, cucumber and sweet pepper decreased as EC of the nutrient solution increased.

    Sodium chloride salinity in fruit vegetable crops in soilless culture. · 1991

    Opposite direction

  3. negative
    Prolonged NFT solution recycling reduced tomato fresh and dry weight and yield versus regular renewal.

    Growth, Productivity, and Mineral Composition of Hydroponically Cultivated Greenhouse Tomatoes, with or without Nutrient Solution Recycling · 1996 · compared with plants grown in NFT with regular renewal of the nutrient solution

    Opposite direction

  4. negative
    Organic fertilizer gave significantly lower red tomato yields than mineral fertilizer.

    Impact of organic and inorganic fertilizers on yield, taste, and nutritional quality of tomatoes · 2006 · compared with mineral fertilizer

    Opposite direction

  5. negative
    Fruit number declined with chromium.

    Effects of chromium on the nutrient element content and morphology of tomato · 1995

    Opposite direction

  6. no effect
    Vermicompost spraying did not affect plant growth, biomass, nutrient allocation, yields, or fruit number.

    Foliar Spraying of Vermicornpost Extracts: Effects on Fruit Quality and Indications of Late-Blight Suppression of Field-Grown Tomatoes · 2006

    Opposite direction

  7. negative
    Half strength nutrient solution reduced tomato yields in the closed system in autumn.

    Effects of nutrition and Bacillus amyloliquefaciens on tomato (Solanum lycopersicum, L.) growing in perlite · 2008

    Opposite direction

  8. negative
    Moderately high conductivity decreased commercial tomato yield by 3% to 22%.

    Increased Electrical Conductivity in Nutrient Solution Management Enhances Dietary and Organoleptic Qualities in Soilless Culture Tomato · 2017

    Opposite direction

969 papers more in this group

See all 978 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.