Intervention effectmodel-written summary

The combined treatment increased onion height, fresh weight and yield.

A claim from Effect of Potassium Fertilizer, Solubilizing Bacteria and Sulphur on Yield, Bulb Quality, Storability and Black Mould Disease of Onion · 2020

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The combined treatment increased onion height, fresh weight and yield.

Taxon
onionAllium cepae0
Treatment
application of feldspar, Bacillus circulans and sulphur fertilizere0
Interactor
Bacillus circulanse0symbiont
Outcome
plant height (cm), fresh weight (ton fed -1) and yield (ton fed. -1)e0
Direction
highere0

Not reportedMaterialGeneCompoundOrgan / stageSecond 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

“application of feldspar, Bacillus circulans and sulphur fertilizer was the best treatment, where it recorded the higher values of the total count of Bacillus circulans (CFU x 106 /g soil), dehydrogenase enzyme activity in the rhizosphere of onion plants cultivated in soil, plant height (cm), fresh weight (ton fed -1) and yield (ton fed. -1) of onion”

✓ located verbatim in the source · abstract, characters 220–571

Title

Effect of Potassium Fertilizer, Solubilizing Bacteria and Sulphur on Yield, Bulb Quality, Storability and Black Mould Disease of Onion

S Fawaz; Shaima Abo Zaed; K Ajay; et al. Assiut Journal of Agricultural Sciences/Assuit Journal of Agricultural Sciences 2020. doi:10.21608/ajas.2020.147568

Other claims from this paper (4)

Record rev-5ce35e492058041f62cfc6513a10f604c0e0c75a95ea0bf34fd35634a1308c7c · schema claims-v0.9 · position 2 in the model’s answer

sulfur atom · yield · Allium cepa (onion)Results differ

45 papers: 38 positive, 7 negative or no effect

37 papers in the same direction as this claim · 7 in the opposite direction

  1. negative
    High combined nitrogen and sulphur rates had an antagonistic effect on bulb nutrient uptake, yield components and yield.

    Nutrient uptake and yield of onion as influenced by nitrogen and sulphur fertilization · 2008

    Opposite direction

  2. no effect
    Excess sulphur did not significantly influence yield.

    Effect of sulphur nutrition on pungency and storage life of short day onion (Allium cepa) · 2013

    Opposite direction

  3. no effect
    K/S rate did not affect individual bulb weight.

    Sweet Onion (Allium cepa) Plant Growth and Bulb Yield and Quality as Affected by Potassium and Sulfur Fertilization Rates · 2016

    Opposite direction

  4. negative
    Seepage irrigation significantly reduced onion yield against all treatments except CS in 2015/2016.

    Effect of cyclic irrigation using moderately saline and non‐saline water on onion (Allium cepa L.) yield and soil salinization in semi‐arid areas of Northern Ethiopia* · 2020 · compared with all but CS

    Opposite direction

  5. no effect
    Sulphur beyond 30 kg/ha brought the onion yield back to the level of 0 and 15 kg/ha.

    Effects of sulphur in presence and absence of farmyard manure on onion (Allium cepa) under onion-maize (Zea mays) cropping sequence · 2008 · compared with 0 and 15 kg/ha

    Opposite direction

  6. no effect
    Sulfur treatments did not affect onion yield or grade.

    RELATIONSHIP BETWEEN PUNGENCY, SOLUBLE SOLIDS, AND SUSCEPTIBILITY TO NECK ROT IN ONIONS · 1992

    Opposite direction

  7. no effect
    High-dilution sulphur sprays did not influence bulb weight or postharvest conservation of onion compared with untreated control.

    High dilutions of Sulphur and relationship with the onion thrips, downy mildew incidence and yield of onion in organic system · 2015 · compared with untreated plot

    Opposite direction

  8. positive
    Sulfur fertilizer significantly increased bulb and tissue dry weights, total dry matter, leaf area index and growth rates.

    Effect of sulphur on growth, yield and yield attributes in onion (Allium cepa L.) · 2013

    Same direction

36 papers more in this group

See all 45 papers →

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

530 papers: 464 positive, 66 negative or no effect

463 papers in the same direction as this claim · 59 in the opposite direction · 7 reporting no difference from an alternative

  1. positive
    T6 gave maximum onion bulb weight at harvest of 170.46g.

    Studies on the influence of biofertilizers in combination with inorganic nutrients on growth, yield and quality attributes of onion (Allium cepa L.) · 2024

    Same directionCites this paper

  2. negative
    Onion yield decreased by 95 Mg·ha -1 for each 25% increase in the proportion of urea in fertilizer blends.

    Nitrogen Use Efficiency and Onion Yield Increased with a Polymer-coated Nitrogen Source · 2002

    Opposite direction

  3. no effect
    Yield and grade did not respond to N rate or its interaction with population.

    Plant Population and Nitrogen Fertilization for Subsurface Drip-irrigated Onion · 2004

    Opposite direction

  4. negative
    Onion yield decreased with SMC rate in 1981.

    Spent Mushroom Compost as a Soil Amendment for Vegetables · 1984

    Opposite direction

  5. no effect
    Onion yield was not reduced by the winter-persistent crops.

    Effects of Green Manure Crops on Soil Mineral Nitrogen Available for Organic Production of Onion and White Cabbage in Two Contrasting Years · 2001

    Opposite direction

  6. no effect
    Commercial organic-compliant fertilizers did not differ in total or jumbo onion yields.

    Evaluation of Poultry Litter and Organic Fertilizer Rate and Source for Production of Organic Short-day Onions · 2010

    Opposite direction

  7. no effect
    Fertigation N rates above 50 kg·ha−1 did not increase onion yield.

    Effect of Drip Irrigation and Fertilization Timing and Rate on Yield of Onion · 2003 · compared with 50 kg·ha−1

    Opposite direction

  8. negative
    Onion productivity fell slightly with increasing liquid fraction concentration and mineral fertilizer solution.

    Impact of Sediment Formed in Biogas Production on Productivity of Crops and Ecologic Character of Production of Onion for Chives · 2018

    Opposite direction

521 papers more in this group

See all 530 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.