Intervention effectmodel-written summary

15 mgL 1 potassium fulvic acid with 2.5 mgL DA-6 raised per-plant yield 21.77% over control.

A claim from Effects of Potassium Fulvic Acid and DA-6 on the Growth and Yield of Tomato Cultivated with Rock Wool · 2020

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

15 mgL 1 potassium fulvic acid with 2.5 mgL DA-6 raised per-plant yield 21.77% over control.

Treatment
15 mgL 1 potassium fulvic acid and 2.5 mgL DA-6e0
Outcome
total yield of a single plante0
Direction
highere0
Value
21.77%e0
Comparator
the controle0

Not reportedTaxonMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingQualifier

Verbatim

e0

“15 mgL 1 potassium fulvic acid and 2.5 mgL DA-6 had the best effect on the total yield of a single plant, which was 21.77% higher than that of the control.”

✓ located verbatim in the source · abstract, characters 1232–1387

Title

Effects of Potassium Fulvic Acid and DA-6 on the Growth and Yield of Tomato Cultivated with Rock Wool

Xiao Huaijuan; Zhou Yan; Mao Ke; et al. American journal of biochemistry & biotechnology/American journal of biochemistry and biotechnology 2020. doi:10.3844/ajbbsp.2020.162.169

Other claims from this paper (6)

Record rev-e6d06f15a83a85bc9123971a2dc145a5d7458c195c96e9fa6e8c890a62074485 · schema claims-v0.9 · position 5 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. no effect
    Foliar K did not increase fruit yield.

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

    Opposite direction

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

    Potassium nutrition increases the lycopene content of tomato fruit · 2007

    Opposite direction

  3. 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

  4. 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

  5. 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

  6. 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

  7. 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

  8. negative
    Tomato yield was low when daytime nitrate and potassium were low and phosphate high, with the opposite levels at night.

    EFFECTS OF DIURNAL CONTROL IN THE MINERAL CONCENTRATION OF NUTRIENT SOLUTION ON TOMATO YIELD AND NUTRIENT ABSORPTION IN HYDROPONICS · 1996

    Opposite direction

71 papers more in this group

See all 80 papers →

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

130 papers: 117 positive, 13 negative or no effect

116 papers in the same direction as this claim · 13 in the opposite direction

  1. no effect
    HA had no significant effect on tomato fruit yield.

    Humic Substances Generally Ineffective in Improving Vegetable Crop Nutrient Uptake or Productivity · 2010

    Opposite direction

  2. no effect
    Neither amendment increased fruit yield in Marglobe.

    Effects of Soil Amendment on Bacterial Wilt Caused by Ralstonia Solanacerum and Tomato Yields in Ethiopia · 2011

    Opposite direction

  3. no effect
    Chelate replacement caused no significant yield loss.

    Use of Humic Substances and Amino Acids to Enhance Iron Availability for Tomato Plants from Applications of the Chelate FeEDDHA · 2005

    Opposite direction

  4. negative
    The positive impact of SSA alone on tomato crop performance was limited.

    Evaluating anaerobic soil disinfestation and other biological soil management strategies for open-field tomato production in Florida · 2018

    Opposite direction

  5. no effect
    Because yield and fruit quality did not differ, no economic benefit of seaweed and fish powder can be inferred under the experimental conditions.

    Foliar-Applied Seaweed and Fish Powder Do Not Improve Yield and Fruit Quality of Organically Grown Processing Tomatoes · 2000

    Opposite direction

  6. no effect
    Biochar amendment did not influence plant growth, crop yield or leaf mineral content of tomato.

    Short-term improvement of soil biological activity in biochar-amended organic greenhouse tomato crops · 2017

    Opposite direction

  7. no effect
    Humic acid preparations 'Humintech' and 'Humentos' at 0.005% as leaf application had no influence on tomato yield under optimal growing conditions.

    Investigations to biological and organic treatments against pests in vegetable cultivation · 2018

    Opposite direction

  8. no effect
    Biostimulant gains were not reflected in fruit yield, number or weight.

    Effect of Biostimulants on Drought Tolerance of Greenhouse-Grown Tomato · 2025

    Opposite direction

121 papers more in this group

See all 130 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.