Intervention effectmodel-written summary

Organic nano NPK fertilizer at the stated dose can increase shallot growth.

A claim from Shallot Growth on Organic Nano NPK Fertilizer Application · 2025

Intervention effectauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

Organic nano NPK fertilizer at the stated dose can increase shallot growth.

Treatment
nano organic NPK fertilizer with Nitrogen 200, Phosphorus 140, and Potassium 80 kg/hae0
Outcome
shallot growthe0
Direction
increasee0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

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

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Applying nano organic NPK fertilizer with Nitrogen 200, Phosphorus 140, and Potassium 80 kg/ha can increase shallot growth.”

✓ located verbatim in the source · abstract, characters 1229–1352

Title

Shallot Growth on Organic Nano NPK Fertilizer Application

E Setyowati; Samanhudi; M Rahayu IOP Conference Series Earth and Environmental Science 2025. doi:10.1088/1755-1315/1490/1/012023

Other claims from this paper (2)

Record rev-99ccaf95f6fa63dbe96a93a4d87cc5676ed04d4a0de7015377811bc65126ff6e · schema claims-v0.9 · position 3 in the model’s answer

nitrogen · growth · Allium cepa (onion)Results differ

81 papers: 71 positive, 10 negative or no effect

70 papers in the same direction as this claim · 9 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
    Nitrogen source and rate had only minor effects on leaf area and storage potential.

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

    Opposite direction

  2. negative
    Increased nitrogen slightly delayed bulb development.

    The phenology of onion bulb development at different sites and its relevance to incomplete bulbing (‘thick-necking’) · 1987

    Opposite direction

  3. no effect
    The nitrogen by spacing interaction did not significantly affect stem diameter.

    Effect of Spacing and Nitrogen Fertilizer on the Yield and Yield Component of Shallot (Allium ascalonium L.) · 2015

    Opposite direction

  4. no effect
    Onion growth until the 3–4 leaf stage did not appear to be influenced by the N rate before sowing.

    Effects of split application of nitrogen on yield and nitrogen recovery of spring-sown onions and on residual nitrogen · 1998

    Opposite direction

  5. no effect
    Nitrogen source did not have significant effects on shallot plant height or leaf number.

    Season, and Nitrogen Source and Rate Affect Development and Yield of Shallot · 2002

    Opposite direction

  6. negative
    Higher N dose decreased bulb dry matter.

    THE INFLUENCE OF N SOURCES AND FERTILIZATION DOSES ON DRY ONION (ALLIUM CEPA L.) YIELD AND BULBS SHELF LIFE · 2009

    Opposite direction

  7. negative
    Direct seeding and high nitrogen gave the greatest nutsedge height, 92.33 cm.

    Evaluating the Effect of Onion (Allium cepa L.) Sowing Methods on Growth Characteristics of Purple Nutsedge (Cyperus rotundus L.) under Different Levels of Nitrogen Fertilizer · 2017

    Opposite direction

  8. no effect
    Nitrogen fertilizer did not significantly affect leaf number or canopy cover.

    Applied Nitrogen Fertilization and Irrigation on Improving Shallot (Allium ascolanicum L.) Growth and Yield on Dry Land in Mesuji, Lampung Province, Indonesia · 2023

    Opposite direction

72 papers more in this group

See all 81 papers →

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

26 papers: 25 positive, 1 negative or no effect

24 papers in the same direction as this claim · 1 in the opposite direction

  1. no effect
    Potassium had no significant impact on shallot height at 2, 3, and 4 MST.

    The Effect of Potassium Fertilizer and Eco-Enzyme on the Growth and Production of Shallots (Allium ascalonicum L.) · 2025

    Opposite direction

  2. positive
    Raising potassium sulphate up to 150 kg/fed significantly affected onion growth characters.

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

    Same direction

  3. positive
    Higher potassium produced more vigorous onion growth in length, leaf number and fresh and dry weight.

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

    Same direction

  4. positive
    Split potassium application increased polar bulb diameter to 51.96 mm versus 51.33 mm for full application at transplanting.

    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

    Same direction

  5. positive
    The fertilizer and manure combination gave the maximum onion plant height of 50.50 cm.

    Growth and yield of onion (Allium cepa L.) as influenced by application of organic and inorganic fertilizers · 2012

    Same direction

  6. positive
    Combined AMF and potassium silicate treatment produced the maximum increment in onion plant height.

    Effects of Funneliformis mosseae and Potassium Silicate on Morphological and Biochemical Traits of Onion Cultivated under Water Stress · 2022

    Same direction

  7. positive
    The fertilizer combination increased fresh weights of leaves, bulbs, and the whole plant in the first season.

    ONION PLANT GROWTH AND YIELD AS AFFECTED BY NITROGEN, POTASSIUM AND SULPHUR COMBINATIONS UNDER EL-ARISH REGION CONDITIONS · 2016 · compared with control (recommended doses of N, K and S)

    Same direction

  8. positive
    Onion given 120 kg K ha-1 from sulphate of potash had maximum plant height, leaf number and leaf length.

    Productivity of Summer Onion to Different Sources and Levels of Potash · 2017

    Same direction

17 papers more in this group

See all 26 papers →

nanoparticle · growth · Allium cepa (onion)Positive and negative results

30 papers: 28 positive, 2 negative or no effect

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

  1. no effect
    Nanoparticles did not affect seed germination.

    Biogenic α-Fe2O3 Nanoparticles Enhance the Biological Activity of Trichoderma against the Plant Pathogen Sclerotinia sclerotiorum · 2021

    Opposite direction

  2. negative
    The nanoformulations prevented root development of Allium cepa at all tested concentrations.

    Silver nanoparticles synthetized by combustion reaction and toxicity studies by changes in radicular growth of Allium cepa / Nanopartículas de prata sintetizadas por reação de combustão e estudos de toxicidade por alterações no crescimento radicular de Allium cepa · 2022

    Opposite direction

  3. positive
    Nanoparticle and nanoemulsion priming enhanced onion seed germination and emergence in greenhouse and field studies compared with unprimed and hydroprimed seeds.

    Green-Synthesized Nanoparticles Enhanced Seedling Growth, Yield, and Quality of Onion (Allium cepa L.) · 2019 · compared with unprimed and hydroprimed seeds

    Same direction

  4. positive
    Nanomaterial seed priming increased onion seed germination and seedling emergence.

    1H Nuclear Magnetic Resonance and Liquid Chromatography Coupled with Mass Spectrometry-Based Metabolomics Reveal Enhancement of Growth-Promoting Metabolites in Onion Seedlings Treated with Green-Synthesized Nanomaterials · 2020

    Same direction

  5. positive
    ZnO/MWCNT nanocomposites at 15 μg/mL gave the best onion seedling growth.

    Zinc-Supported Multiwalled Carbon Nanotube Nanocomposite: A Synergism to Micronutrient Release and a Smart Distributor To Promote the Growth of Onion Seeds in Arid Conditions · 2018

    Same direction

  6. positive
    CuO NP treatment enhanced plant height, number of leaves, fresh and dry weight of onion compared with Cu sulfate and chelates.

    Are Copper Nanoparticles Toxic to All Plants? A Case Study on Onion (Allium cepa L.) · 2021 · compared with Cu sulfate and chelates

    Same direction

  7. positive
    Foliar wsCNP and sulfur treatments significantly increased onion vegetative growth.

    Effect of Carbon Nanoparticles in Biochar and Sulphur as a Foliar Spray on Onion Plants: A New Orientation · 2022 · compared with untreated plants

    Same direction

  8. positive
    Nano NPK at 6 L/fed gave the highest plant height versus water control.

    Effect of Fertilization with Mineral NPK and Spraying with Nano NPK on Growth, Yield and Quality of Onion · 2021 · compared with spraying with water (control treatment)

    Same direction

21 papers more in this group

See all 30 papers →

3 of 5 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.

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.