Intervention effectmodel-written summary

The second nitrogen application schedule was significantly superior to the first for seed index and total cotton yield per plant.

A claim from EFFECT OF PLANT DENSITY AND METHODS OF APPLICATION AND LEVELS OF NITROGEN FERTILIZER ON YIELD AND YIELD COMPONENTS IN COTTON · 2009

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

The second nitrogen application schedule was significantly superior to the first for seed index and total cotton yield per plant.

Treatment
one third of the quantity of fertilizer at thinning and the rest two thirds at bloominge1
Outcome
seed index and total cotton yield of plante0
Direction
significantly superiore0
Comparator
half the quantity at thinning and second half at bloominge2

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier

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

Gossypium hirsutum
Gossypium hirsutum · TaxonChriKo · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The method of nitrogen fertilizer application had no significant impact on the yield traits , components and quality traits except for the seed index and total cotton yield of plant in which the second method of application was significantly superior over the first”

✓ located verbatim in the source · abstract, characters 1070–1335
e1

“The second method used one third of the quantity of fertilizer at thinning and the rest two thirds at blooming”

✓ located verbatim in the source · abstract, characters 598–708
e2

“The first method used half the quantity at thinning and second half at blooming”

✓ located verbatim in the source · abstract, characters 517–596
t0

“COTTON”

✓ located verbatim in the source · title, characters 118–124

Title

EFFECT OF PLANT DENSITY AND METHODS OF APPLICATION AND LEVELS OF NITROGEN FERTILIZER ON YIELD AND YIELD COMPONENTS IN COTTON

Saleh M.I Al-jobouri Mağallaẗ zirāʿaẗ al-rāfidayn 2009. doi:10.33899/magrj.2009.27506

Other claims from this paper (7)

Record rev-afc23d2dedd8ebb6de65e7bdd984ddbed8f16e063bca4b5db70cd0b09dded50b · schema claims-v0.9 · position 4 in the model’s answer

pruning · yield · Gossypium hirsutum (cotton)Results differ

76 papers: 49 positive, 27 negative or no effect

48 papers in the same direction as this claim · 23 in the opposite direction · 4 reporting no difference from an alternative

  1. no effect
    Defoliation applied before the first flower buds appeared did not change cotton yield.

    How to Succeed by Doing Nothing · 2003

    Opposite direction

  2. no effect
    Early thinning did not alter timing of changes in cotton flower production and boll retention rates.

    Fruiting of Cotton. III. Nutritional Stress and Cutout1 · 1985

    Opposite direction

  3. negative
    Under ample water, 67% defoliation reduced cotton seed and lint yield by 37%.

    EXPERIMENTAL ASSESSMENT OF THE IMPACT OF DEFOLIATION ON GROWTH AND PRODUCTION OF WATER-STRESSED MAIZE AND COTTON PLANTS · 2004 · compared with non-defoliated control

    Opposite direction

  4. no effect
    Leaf removal after the sympodial branch developed had no significant effect on cotton height or yield

    Cotton Main‐Stem Leaves in Relation to Vegetative Development and Yield · 1988 · compared with a control with no leaf removal

    Opposite direction

  5. negative
    Partial defoliation significantly reduced cotton yield and boll retention percentage.

    Boll Retention in Relation to Leaf and Boll Development in Cotton (Gossypium hirsutum L.)1 · 1967

    Opposite direction

  6. no effect
    Applying 45 or 60 kg N ha -1 at thinning stage gave yields similar to the recommended 150 kg N ha -1.

    Site-specific fertilizer nitrogen management in Bt cotton using chlorophyll meter · 2020 · compared with the recommended dose of 150 kg N ha -1

    Opposite direction

  7. no effect
    Defoliation did not affect total boll number shortly before harvest.

    Effects of simulated seedling defoliation on growth and yield of cotton in southern New South Wales · 2018

    Opposite direction

  8. no effect
    Topping had no significant influence on yield and yield attributes.

    Response of cotton (Gossypium hirsutum) to mepiquat chloride and topping under varying levels of nitrogen · 2002

    Opposite direction

67 papers more in this group

See all 76 papers →

fertilization · yield · Gossypium hirsutum (cotton)Positive and negative results

550 papers: 497 positive, 53 negative or no effect

496 papers in the same direction as this claim · 47 in the opposite direction · 6 reporting no difference from an alternative

  1. no effect
    Cotton yields did not respond to K fertilization above 160 kg K2O/ha.

    Effects of Rate and Time of Potassium Application on Cotton Yield and Quality in Turkey · 2002

    Opposite direction

  2. no effect
    Potassium fertilization did not affect cotton flower production at either planting date.

    Planting Date and Potassium Fertility Effects on Cotton Yield and Fiber Properties · 1998

    Opposite direction

  3. negative
    At sympodia 5 through 10, fruiting site 1 boll production fell from 49% at zero nitrogen to 36% at 168 kg ha−1.

    Nitrogen Effects on Boll Production of Field‐Grown Cotton · 1993 · compared with 0 N rate

    Opposite direction

  4. no effect
    Calcium or magnesium salts without liming did not raise low cotton yields.

    Long‐Term Liming Effects on Coastal Plain Soils and Crops · 2001

    Opposite direction

  5. no effect
    Fertilizer N did not influence cotton yield after pea cover.

    Cotton Yield and Fiber Quality Response to Green Manures and Nitrogen · 1993

    Opposite direction

  6. no effect
    P fertilizer did not affect cotton lint yield at Lamesa in 2000.

    Influence of Landscape Position, Soil Series, and Phosphorus Fertilizer on Cotton Lint Yield · 2003

    Opposite direction

  7. no effect
    Potassium fertilization had no effect on cotton yield.

    Influence of Boron, Nitrogen, and Potassium on Yield, Nutrient Uptake, and Abnormalities of Cotton · 1969

    Opposite direction

  8. no effect
    Phosphorus fertilizer had no effect on biomass production.

    Phosphorus Use-Efficiency by Cotton Grown in an Alkaline Soil as Determined Using32Phosphorus and33Phosphorus Radio-Isotopes · 2008

    Opposite direction

541 papers more in this group

See all 550 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.