Intervention effectmodel-written summary

The highest onion bulb Fe, Mn and Zn values occurred with 150 units of K2O and 3g/l Stimufol.

A claim from Vegetative Growth and Chemical Parameters of Onion as Influenced by Potassium as Major and Stimufol as Minor Fertilizers · 2011

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The highest onion bulb Fe, Mn and Zn values occurred with 150 units of K2O and 3g/l Stimufol.

Taxon
onionAllium cepae0
Treatment
higher potassium rate (150 units of K2O) with foliar sprayed by stimufol at the highest dose of 3g/le0
Outcome
Fe, Mn, Zne0
Direction
higheste0

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 values of N, P, K, Fe, Mn, Zn and Cu in bulb tissues, bulb yield and vegetative growth properties were recorded with onion plants which received the higher potassium rate (150 units of K2O) with foliar sprayed by stimufol at the highest dose of 3g/l”

✓ located verbatim in the source · abstract, characters 1368–1629

Title

Vegetative Growth and Chemical Parameters of Onion as Influenced by Potassium as Major and Stimufol as Minor Fertilizers

A. M. Shaheen; F. A. Rizk; A. M. M. El-Tanahy; et al. AUSTRALIAN JOURNAL OF BASIC AND APPLIED SCIENCES 2011

Other claims from this paper (12)

Record rev-e40da157538c2ac9d83bd9242e023f2a96096d49a759f0457e0f7c73d261fdc4 · schema claims-v0.9 · position 10 in the model’s answer

application · nutrient: content · Allium cepa (onion)Positive and negative results

15 papers: 13 positive, 2 negative or no effect

12 papers in the same direction as this claim · 2 in the opposite direction

  1. no effect
    Foliar sprays other than ZnSO4 did not increase onion micronutrient concentrations.

    RESPONSE OF ONION TO FOLIAR APPLICATION OF SOME MICRONUTRIENTS · 1999

    Opposite direction

  2. no effect
    Foliar fertilization had very little effect on onion leaf nitrogen concentration.

    FOLIAR NITROGEN EFFECTS ON ONION PRODUCTION AND DAMAGE BY THRIPS AND PURPLE BLOTCH · 1990

    Opposite direction

  3. positive
    The combined treatment gave the highest onion bulb N, P, K, Cu, Fe and Zn.

    Response of Onion Yield and Its Chemical Content to NPK Fertilization and Foliar Application of Some Micronutrients · 2017

    Same direction

  4. positive
    Soil humic acid application positively affected P, Mg and Fe contents of bulbs.

    The Influence of Irrigation Water Salinity and Humic Acid on Nutrient Contents of Onion (Allium cepa L.) · 2020

    Same direction

  5. positive
    Soil N plus higher-level foliar spray (4.6 kg N/f) significantly increased N, P and K uptake of the onion plant 100 days after sowing.

    NITROGEN FERTILIZATION OF ONION IN SANDY SOILS · 1998

    Same direction

  6. positive
    Nanoencapsulated foliar nutrients improved nutrient penetration and mobilization more than free fertilizers.

    Combined Soil Microorganism Amendments and Foliar Micronutrient Nanofertilization Increased the Production of Allium cepa L. through Aquaporin Gene Regulation · 2023 · compared with free-form fertilizers

    Same direction

  7. positive
    Foliar selenium was more efficient than soil application for onion biofortification.

    Onion quality and yield after agronomic biofortification with selenium · 2024 · compared with soil application

    Same direction

  8. positive
    Soil RDF plus FYM plus FeSO4 gave the highest onion nitrogen uptake, 128.13 kg ha-1.

    Response of Onion to Soil and Foliar Application of Iron on Entisols · 2013 · compared with RDF + FYM + FeSO4 @ 20 kg ha-1 + 0.5 % FeSO4 at 30 and 45 days after transplanting

    Same direction

6 papers more in this group

See all 15 papers →

potassium · nutrient: content · Allium cepa (onion)Results agree

12 papers: 12 positive, 0 negative or no effect

11 papers in the same direction as this claim

  1. positive
    Higher potassium rates increased potassium concentration and uptake in onion leaves.

    Reduced Nitrogen, Phosphorus, and Potassium Rates for Intermediate-day Onion in Paddy Soil with Incorporated Rice Straw plus Manure · 2011

    Same direction

  2. positive
    Nitrogen uptake by onion increased from 45.2 to 70.0 kg ha−1 with 120 kg K2O ha−1.

    Soil Potassium Fractions and Response of Cauliflower and Onion to Potassium · 2010

    Same direction

  3. positive
    Potassium humate at 4 kg.fed-1 gave the highest leaf and bulb mineral values.

    The Role of Garlic and Onion Extracts in Growth and Productivity of Onion under Soil Application of Potassium Humate and Fulvate · 2021

    Same direction

  4. positive
    Application of SOP increased the utilization of N, Ca and Mg in onion compared with MOP.

    Response of onion cepa) to potassium application (Allium · 2001 · compared with MOP

    Same direction

  5. positive
    Sulphate of potash and ammonium sulphate gave superior nutrient uptake in onion.

    Response of different sources of Nitrogen and Potassium on Kharif onion (Allium cepa L.) var. Arka Kalyan · 2015

    Same direction

  6. positive
    Potassium at 100 kg K 2 O ha -1 significantly increased N, P, K and S uptake by onion.

    Effect of potassium and sulphur on nutrient uptake by onion and chilli intercrops in a vertisol · 2016

    Same direction

  7. positive
    Nitrogen uptake was higher with 50 per cent K at transplanting and 50 per cent at 30 DAT than with all K at transplanting.

    Potassium Levels, Sources and Time of Application on Nutrient Uptake and Nutrient Use Efficiency of Onion (Allium cepa L.) · 2018 · compared with 100 per cent potassium at transplanting

    Same direction

  8. positive
    Half water hyacinth compost plus three-quarter NPK S dose increased S-availability and S-uptake of shallots compared with control

    Effect of Water Hyacinth Compost and Nitrogen, Phosphorus, Potassium, Sulfur Fertilizers on S-Availability, S-Uptake, and Quality and Yield of Onion (Allium ascalonicum L.) on Inceptisols of Jatinangor · 2023 · compared with control

    Same direction

3 papers more in this group

See all 12 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.