Intervention effectmodel-written summary

Higher irrigation depths increased mean onion bulb production regardless of castor cake dose.

A claim from Organic cultivation of onion under castor cake fertilization and irrigation depths · 2018

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Higher irrigation depths increased mean onion bulb production regardless of castor cake dose.

Taxon
onionAllium cepae0
Treatment
highest irrigation depthse0
Outcome
mean production of onion bulbse0
Direction
positivelye0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The highest irrigation depths positively influenced the mean production of onion bulbs, regardless of the applied dose of castor cake”

✓ located verbatim in the source · abstract, characters 769–902

Title

Organic cultivation of onion under castor cake fertilization and irrigation depths

Gabriel Alves Botelho de Mello; Daniel Fonseca de Carvalho; Leonardo Oliveira Medici; et al. Acta Scientiarum Agronomy 2018. doi:10.4025/actasciagron.v40i1.34993

Other claims from this paper (1)

Record rev-3f4e3a7dff3e2600c578155ae9f0d7c751630fca7f1559069b8536e74e143b04 · schema claims-v0.9 · position 1 in the model’s answer

irrigation · yield · Allium cepa (onion)Positive and negative results

133 papers: 106 positive, 27 negative or no effect

105 papers in the same direction as this claim · 22 in the opposite direction · 5 reporting no difference from an alternative

  1. negative
    Deficit irrigation tended to reduce bulb number and bulb size.

    Crop Coefficient-based Deficit Irrigation and Planting Density for Onion: Growth, Yield, and Bulb Quality · 2012

    Opposite directionCited by this paper

  2. positive
    In 1993 total yield increased with increasing irrigation threshold.

    Onion Yield and Quality Affected by Soil Water Potential as Irrigation Threshold · 1998

    Same directionCited by this paper

  3. negative
    High salinity irrigation decreased the number of leaves and mean bulb diameter of onion.

    Role of Foliar Application of Nicotinic Acid and Tryptophan on Onion Plants Response to Salinity Stress · 2014

    Opposite direction

  4. negative
    RDI with 50% of the IWR during bulb ripening slightly decreased onion yield by 9% compared with full irrigation.

    Regulated Deficit Irrigation as a Water-Saving Strategy for Onion Cultivation in Mediterranean Conditions · 2019 · compared with full irrigation

    Opposite direction

  5. negative
    Irrigating onion at 75% of requirements reduced yield by 10.3% relative to full irrigation.

    Effect of Deficit Irrigation on the Productive Response of Drip-irrigated Onion (Allium cepa L.) in Mediterranean Conditions · 2019 · compared with full irrigation

    Opposite direction

  6. negative
    An 11 day irrigation interval decreased onion bulb diameter and dry mass.

    Effects of Mycorrhizal Colonization on Growth Parameters of Onion under Different Irrigation and Soil Conditions · 2007

    Opposite direction

  7. no effect
    Time when irrigation was withheld did not affect onion growth and bulb yield.

    Fertilizer Type, But Not Time of Cessation of Irrigation, Affect Onion Development and Yield in a Semi-Arid Region · 2003

    Opposite direction

  8. no effect
    Yield under T2 was not statistically different from full irrigation.

    Evaluating the Effects of Deficit Irrigation on Yield and Water Productivity of Furrow Irrigated Onion (Allium cepa L.) in Ambo, Western Ethiopia · 2018 · compared with full irrigated treatment

    Opposite direction

124 papers more in this group

See all 133 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.