Intervention effectmodel-written summary

Bio-fertilizers with 100% RDF (treatment T15) significantly enhanced onion yield per plot, recorded as 22.74 kg.

A claim from Effect of bio-fertilizers with levels of fertilizer on yield attributes and economic of onion bulb · 2020

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Bio-fertilizers with 100% RDF (treatment T15) significantly enhanced onion yield per plot, recorded as 22.74 kg.

Taxon
onionAllium cepae0
Treatment
100% RDF + Azospirillum + Azotobacter + PSBe1
Interactor
AzospirillumAzospirillume1symbiont
Second interactor
AzotobacterAzotobactere1symbiont
Outcome
yield per plote2
Direction
enhancede3
Value
22.74 kge2

Not reportedMaterialGeneCompoundOrgan / stageComparatorSettingQualifier

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 ↗
Azospirillum
Azospirillum · InteractorFadelblaid · CC BY-SA 4.0 · Wikimedia Commons ↗
Azotobacter
Azotobacter · Second interactor · picture of the genus (one of its species)DAN H. JONES · Public domain · Wikimedia Commons ↗

Verbatim

e0

“onion bulb”

✓ located verbatim in the source · title, characters 88–98
e1

“treatment T15 – 100% RDF + Azospirillum + Azotobacter + PSB”

✓ located verbatim in the source · abstract, characters 684–743
e2

“yield per plot (22.74 kg)”

✓ located verbatim in the source · abstract, characters 574–599
e3

“had significantly enhanced the yield and yield attributes”

✓ located verbatim in the source · abstract, characters 396–453

Title

Effect of bio-fertilizers with levels of fertilizer on yield attributes and economic of onion bulb

Devendra Vishvkarma; Rajesh Lekhi; Karan Vir Singh; et al. Journal of Pharmacognosy and Phytochemistry 2020

Other claims from this paper (8)

Record rev-e6a1d8b0c9d76ed56e376cec2190b5e36e35097cf92b7171d9eab22f10bc9ab1 · schema claims-v0.9 · position 4 in the model’s answer

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

21 papers: 20 positive, 1 negative or no effect

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

  1. negative
    Azotobacter plus Azospirillum gave minimum bulb weight of 64.23 ± 2.39 g.

    Influence of PGPR, AM Fungi and Conventional Chemical Fertilizers Armament on Growth, Yield Quality, Nutrient’s translocations and Quercetin Content in Onion Crop Cultivated in Semi-Arid Region of India · 2022

    Opposite direction

  2. positive
    The fertilizer strategy saved 50 kg N ha-1 without a significant yield difference.

    Response of onion (Allium cepa L.) to combined application of biological and chemical nitrogenous fertilizers · 2007

    Same direction

  3. positive
    Treatment T 12 gave the maximum number of leaves per plant in onion (12.15).

    Effect of organic manures, biofertilizers and micronutrients on growth, yield and quality of onion (Allium cepa L.) · 2017 · compared with all treatments under study

    Same direction

  4. positive
    The 100% organic nutrient source treatment gave maximum onion yield.

    EFFECT OF INTEGRATED NUTRIENT MANAGEMENT ON ONION YIELD AND SOIL PROPERTIES IN SOYBEAN - ONION CROPPING SEQUENCE · 2011

    Same direction

  5. positive
    N2 fixers Azotobacter + PSB inoculation increased onion yield.

    Effect of NPK through Chemical Fertilizers Combination with Farm Yard Manure (FYM) and Bio-fertilizers on Yield Attributes of Onion (Allium cepa L.) in Jaipur Region of Rajasthan, India · 2024

    Same direction

  6. positive
    Azotobacter plus Azospirillum maximized leaf number, inflorescences per plot and bulb diameter.

    Effect of bio-fertilizers on growth, yield and quality of onion cv. sukhsagar. · 2009

    Same direction

  7. positive
    In onion, the PGPR treatment T6 (100% NPK with Azotobacter, Sphingobacterium and Burkholderia) gave the maximum 20-bulb weight and bulb yield.

    Differential Effects of Plant Growth-Promoting Rhizobacteria Used as Soil Application vis-à-vis Root Dip of Seedlings on the Performance of Onion ( Allium cepa L.) in Three Distinct Agro-climatic Zones of Indian Punjab · 2022

    Same direction

  8. positive
    The stated fertilizer, manure and inoculant combination had the best benefit-cost ratio.

    Yield and economics of onion (Allium cepa L.) as influenced by NPK, FYM and biofertilizers. · 2012

    Same direction

12 papers more in this group

See all 21 papers →

Azospirillum · yield · Allium cepa (onion)Results agree

24 papers: 24 positive, 0 negative or no effect

23 papers in the same direction as this claim

  1. positive
    The 75% nitrogen dose with Azospirillum gave the highest onion bulb yield of 328.4 q/ha.

    Use of bio-fertilizer (Azospirillum) in onion · 2005

    Same direction

  2. positive
    Combined PSB and Azospirillum inoculation gave maximum onion yield parameters.

    Yield and Quality of rabi Onion (Allium cepa L.) Influenced by Integrated Nutrient Management · 2018

    Same direction

  3. positive
    Azospirillum and BPF-enriched biofertilizers gave the best onion production per hill, 85.33 g.

    Pemanfaatan Berbagai Jenis Pupuk Organik Hayati terhadap Produksi Bawang Merah (Allium ascalonicum L.) di Tanah Pasang Surut Tipe Luapan C Asal Banyuurip · 2019

    Same direction

  4. positive
    The consortium treatment gave maximum bulb weight of 68.15 ± 2.27g.

    Influence of PGPR, AM Fungi and Conventional Chemical Fertilizers Armament on Growth, Yield Quality, Nutrient’s translocations and Quercetin Content in Onion Crop Cultivated in Semi-Arid Region of India · 2022

    Same direction

  5. positive
    Azotobacter plus Azospirillum maximized leaf number, inflorescences per plot and bulb diameter.

    Effect of bio-fertilizers on growth, yield and quality of onion cv. sukhsagar. · 2009

    Same direction

  6. positive
    Bulb diameter was higher (8.30 cm) with 50% of recommended N from poultry manure plus 50% from inorganic fertilizers, Azospirillum and P. fluorescens than in the control.

    Influence of Integrated Nutrient Management on Growth Parameters, Yield and Severity of Disease in Onion (Allium cepa L.) · 2017 · compared with Control

    Same direction

  7. positive
    The integrated fertilizer treatment produced the highest onion bulb yield of 54.21 t ha−1.

    Effect of organic, inorganic and biofertilizers on yield, storage quality and soil nutrient status of onion (Allium cepa L.) under vertisols of western Maharashtra · 2016 · compared with absolute control

    Same direction

  8. positive
    Biofertilizer improved number of onion leaves per plant.

    Effect of biofertilizer and gibberellic acid on growth and yield of onion. · 2010

    Same direction

15 papers more in this group

See all 24 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. 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

  2. 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

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

    Spent Mushroom Compost as a Soil Amendment for Vegetables · 1984

    Opposite direction

  4. 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

  5. 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

  6. 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

  7. 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

  8. no effect
    Higher fertilization did not increase onion yield beyond stated N, P and K levels.

    OPTIMAL SOIL pH AND SUFFICIENCY CONCENTRATIONS OF N, P AND K FOR MAXIMUM ALFALFA AND ONION YIELDS ON ACID ORGANIC SOILS · 1980

    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.