Intervention effectmodel-written summary

Up to 25% KCl caused no significant growth or yield decline under direct seeding.

A claim from Onion Bulb Yield and Quality as Influenced by Seed or Seedling Planting Methods As well as Potassium Fertilizer Forms, K2SO4 and KCl, and Their Combination · 2023

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Up to 25% KCl caused no significant growth or yield decline under direct seeding.

Taxon
onionAllium cepae0
Treatment
KCl fertilizer up to 25% of their potassium requirementse0
Outcome
plant growth or bulb yielde0
Direction
without causing a significant declinee0
Qualifier
when planting onions by direct seedse0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue

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

“supplying the onion plants with KCl fertilizer up to 25% of their potassium requirements without causing a significant decline in plant growth or bulb yield when planting onions by direct seeds”

✓ located verbatim in the source · abstract, characters 1433–1626

Title

Onion Bulb Yield and Quality as Influenced by Seed or Seedling Planting Methods As well as Potassium Fertilizer Forms, K2SO4 and KCl, and Their Combination

Nashwa Abu El-Azm; Amr Metwally; Salama Abd Elhady Scientific Journal of Agricultural Sciences 2023. doi:10.21608/sjas.2023.179101.1270

Other claims from this paper (7)

Record rev-cce997971d4892cbedd879ec34089911417571df0b63a0fac1b334b994ee9f12 · schema claims-v0.9 · position 7 in the model’s answer

potassium chloride · yield · Allium cepa (onion)Results agree

9 papers: 9 positive, 0 negative or no effect

8 in the opposite direction

  1. positive
    NPK Phonska 300 kg/ha with KCl 100 kg/ha gave the best tiller number, 11.56 per cluster.

    Applications of NPK Phonska and KCl Fertilizer for the Growth and Yield of Shallots (Allium Ascalonicum) in Serang, Banten · 2014

    Opposite direction

  2. positive
    Biourine with the stated NPK regimen gave the highest bulb yield, 1,932.2 kg m -2.

    APPLICATION OF BIOURINE ON GROWTH AND YIELD OF SHALLOT FERTILIZED WITH INORGANIC AND ORGANIC FERTILIZER IN BATU, EAST JAVA · 2015 · compared with 5 t ha -1 organic fertilizer without Biourine

    Opposite direction

  3. positive
    The K1P1 fertilizer combination gave the highest shallot production.

    Pengaruh Pemberian Pupuk Kandang Kerbau dan Dosis Pupuk Anorganik Terhadap Hara N, P, K Tanah, Pertumbuhan dan Produksi Bawang Merah (Allium ascalonicum L.): The Effect of Buffalo Manure and Doses of Inorganic Fertilizer on The Soil Nutrient of Nitrogen, Phosphate, Potassium, Growth and Production of Shallot (Allium ascalonicum L.) · 2017

    Opposite direction

  4. positive
    KCl at 150 kg/ha gave higher shallot yield than other KCl doses, with a significant difference.

    Growth and yield of shallot using KCl fertilizer at peatlands in Central Kalimantan, Indonesia · 2021 · compared with other KCl dosage treatments

    Opposite direction

  5. positive
    Urea 300 kg/ha and KCl 150 kg/ha gave the best fresh tuber weight.

    Response of Shallots of Batu Ijo Variety on Doses of N And K Fertilizers · 2021

    Opposite direction

  6. positive
    The combined fertilizer treatment gave the highest yield.

    Response of Growth and Yield of Shallots to Various Types of Fertilizer in North Minahasa regency · 2022 · compared with 4 fertilization treatment

    Opposite direction

  7. positive
    200 kg ha−1 KCl gave fresh tuber weight of 12.35 tons ha−1, higher than lower rates.

    Tropic soil properties and productivity of Shallot Lembah Palu variety · 2023 · compared with 100 kg KCl ha −1

    Opposite direction

  8. positive
    KCl fertilizer at 1.2 g/plant with 0 g/plant humic acid gives good growth and yield of spring onion

    Effect of KCl Fertilizer and Humic Acid to The Growth and Yields Of Spring Onion (Allium fistulosum L.) · 2024

    Opposite direction

See all 9 papers →

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

59 papers: 54 positive, 5 negative or no effect

4 papers in the same direction as this claim · 54 in the opposite direction

  1. positive
    Raising potassium sulphate up to 150 kg/fed significantly affected total yield and its components (bulb weight and bulb dimension) of onion.

    RESPONSE OF GROWTH AND YIELD OF ONION PLANTS TO POTASSIUM FERTILIZER AND HUMIC ACID. · 2005

    Opposite direction

  2. positive
    Bulb yield of onion increased significantly up to 120 kg K2O/ha.

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

    Opposite direction

  3. positive
    Maximum onion yield was obtained with the variety Rasidpura Local at 150 kg nitrogen and 150 kg potassium per hectare.

    Response of onion to nitrogen and potassium fertilization under semi-arid condition of Rajasthan · 2003

    Opposite direction

  4. positive
    At 180 kg ha-1 K2O, 92.8 kg ha-1 N was estimated to maximize class 4 bulb yield at 35.4%.

    Effects of levels of potassium and nitrogen on yields and post-harvest conservation of onions in winter · 2014

    Opposite direction

  5. positive
    Three split applications of potassium gave the highest bulb yield (11.85 t/ha) of summer onion.

    Response of Summer Onion to Potash and its Application Methods · 2008

    Opposite direction

  6. positive
    Higher potassium gave higher onion bulb yield.

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

    Opposite direction

  7. positive
    Split potassium application increased plot yield to 19.87 kg versus 19.20 kg.

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

    Opposite direction

  8. positive
    Potassium increased bulb yield over control, but its rates yielded alike.

    Effect of Mulch and Different Levels of N and K on the Growth and Yield of Onion · 2013 · compared with control

    Opposite direction

50 papers more in this group

See all 59 papers →

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

530 papers: 464 positive, 66 negative or no effect

66 papers in the same direction as this claim · 463 in the opposite direction

  1. positive
    Nitrogen fertilizer across increasing spacing significantly increased number of leaves (30 DAT), fresh bulb weight and bulb diameter.

    Effect of Planting Density and Spacing on Growth and Yield of Onion · 2018

    Opposite directionCited by this paper

  2. no effect
    Fertilization treatments of 150 or 195 lb/acre nitrogen did not affect total or medium onion yields.

    Direct Seeding Short-day Onions in Southeastern Georgia · 2008

    Same directionCited by this paper

  3. positive
    N fertilization increased bulb diameter by about 12.

    Growth, bulb yield and quality of onion ( Allium cepa L.) as influenced by nitrogen and phosphorus fertilization on vertisol I. growth attributes, biomass production and bulb yield · 2011 · compared with control

    Opposite direction

  4. positive
    Combined vermicompost and NPK increased onion vegetative and bulb growth.

    Effects of combined application of vermicompost and mineral fertilizer on the growth of Allium cepa L. and soil fertility · 2011

    Opposite direction

  5. positive
    N fertilization gave only a small increase in onion bulb yield because residual soil nitrate was high.

    Nitrogen Fertilizer Use Efficiency of Furrow‐Irrigated Onion and Corn · 2002

    Opposite direction

  6. positive
    The treatment increased shallot bulb yield versus other treatments.

    Improvement of soil quality using bokashi composting and NPK fertilizer to increase shallot yield on dry land · 2018 · compared with other treatments

    Opposite direction

  7. positive
    Manure plus half-rate fertilizer gave the highest cabbage and onion yields.

    POTENTIAL OF BIOMASS TRANSFER TECHNOLOGIES IN SUSTAINING VEGETABLE PRODUCTION IN THE WETLANDS (DAMBOS) OF EASTERN ZAMBIA · 2003

    Opposite direction

  8. positive
    Compost increased onion yield.

    Cumulative effects of sludge compost on crop yields and soil properties · 1994

    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.