Intervention effectmodel-written summary

Optimizing nitrogen and plant population improved wheat grain yield and yield components.

A claim from Grain Yield and Yield Related Traits of Bread Wheat as Influenced by N and Seeding Rates and Their Interaction Effects in 2020 under Irrigation at Western and North of Oromia, Ethiopia · 2023

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Optimizing nitrogen and plant population improved wheat grain yield and yield components.

Treatment
optimizing nitrogen application and plant populatione0
Outcome
grain yield and yield componentse0
Direction
improvede0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the grain yield and yield components of wheat were improved by optimizing nitrogen application and plant population”

✓ located verbatim in the source · abstract, characters 1157–1272
t0

“Grain Yield and Yield Related Traits of Bread Wheat as Influenced by N and Seeding Rates and Their Interaction Effects in 2020 under Irrigation at Western and North of Oromia, Ethiopia”

✓ located verbatim in the source · title, characters 0–184

Title

Grain Yield and Yield Related Traits of Bread Wheat as Influenced by N and Seeding Rates and Their Interaction Effects in 2020 under Irrigation at Western and North of Oromia, Ethiopia

Hailu Feyisa; Girma Mengistu; Alemayehu Biri; et al. International Journal of Agronomy 2023. doi:10.1155/2023/8666699

Other claims from this paper (9)

Record rev-6f11fcc6370fb1bcbfbb4504939f12e349ad7fd4b113bb09bd40bcdbe345a054 · schema claims-v0.9 · position 1 in the model’s answer

density · yield · Triticum aestivum (wheat)Positive and negative results

498 papers: 376 positive, 122 negative or no effect

375 papers in the same direction as this claim · 115 in the opposite direction · 7 reporting no difference from an alternative

  1. positive
    Plant height, spike length and spikelets per spike were maximal at 150 kg/ha seed and minimal at 125kg/ha.

    Effect of Seeding Rates and Nitrogen Levels on Yield and Yield Components of Wheat (Triticum aestivum L.) · 2012 · compared with seeding rate

    Same directionCited by this paper

  2. positive
    Wheat yield rose with seeding rate across all three years.

    Seeding and Nitrogen Rates Required to Optimize Winter Wheat Yields following Grain Sorghum and Soybean · 2003

    Same directionCited by this paper

  3. positive
    At Metema, 276 kg N ha–1 with 225 kg ha–1 seed rate gave the highest grain yield, 5178 kg ha− 1.

    Nitrogen and seeding rate optimization for bread wheat (Triticum aestivum L.) under irrigation in Metema and Belesa, Northwestern Ethiopia · 2026

    Same directionCites this paper

  4. positive
    The 150 kg ha −1 seed by 150 kg ha −1 fertilizer interaction gave higher tiller number and grain yield than the other treatments

    The Effect of Seed and Blended Fertilizer Rates on Crop Performance, Fertilizer Use Efficiency, and Economic Benefit of Bread Wheat in Western Ethiopia · 2026 · compared with the other treatments

    Same directionCites this paper

  5. no effect
    Sowing density did not affect yield in 2000.

    Field evaluation of early vigour for genetic improvement of grain yield in wheat · 2002

    Opposite direction

  6. no effect
    Spacing changes did not significantly affect grain yield.

    Genotype, sowing date and plant spacing influence on high-yielding irrigated wheat in southern New South Wales. II. Growth, yield and nitrogen use · 1990

    Opposite direction

  7. no effect
    Nitrogen level, N timing and seeding rate had no significant effect on spring wheat grain yield across environments.

    Seeding Rate and Nitrogen Management Effects on Spring Wheat Yield and Yield Components · 2007

    Opposite direction

  8. negative
    Lower seeding rates reduced grain yield by 0.8 Mg ha −1.

    Seeding Rate and Genotype Effect on Agronomic Performance and End‐Use Quality of Winter Wheat · 2002

    Opposite direction

489 papers more in this group

See all 498 papers →

nitrogen · yield · Triticum aestivum (wheat)Positive and negative results

2,061 papers: 1,737 positive, 324 negative or no effect

1,736 papers in the same direction as this claim · 285 in the opposite direction · 39 reporting no difference from an alternative

  1. positive
    Plant height, tiller density and spike length were highest at 125 kg/ha nitrogen and lowest with zero nitrogen.

    Effect of Seeding Rates and Nitrogen Levels on Yield and Yield Components of Wheat (Triticum aestivum L.) · 2012 · compared with zero level of nitrogen

    Same directionCited by this paper

  2. positive
    A 240 kg N ha−1 three-way split gave optimum grain yield of 6060.04 kg ha−1.

    Effect of split application of different N rates on productivity and nitrogen use efficiency of bread wheat (Triticum aestivum L.) · 2018

    Same directionCited by this paper

  3. positive
    Number of total tillers was maximum (7.50 per plant) with combined 150 kg ha-1 NPSB and urea.

    Periodic Biological, Yield, Nutrient Up Take and Use Efficiency of Bread Wheat as Influenced by NPSB and Urea Fertilize Rates in Gechi District, Southwestern Ethiopia · 2023

    Same directionCites this paper

  4. positive
    Nitrogen alone significantly increased wheat grain yield.

    Optimizing yield, quality, and nutrient uptake of bread wheat in response to N and P on Vertisols of North Central Highlands of Ethiopia · 2025

    Same directionCites this paper

  5. positive
    Growth and yield components increased with nitrogen rate up to 276 kg ha− 1 in both locations.

    Nitrogen and seeding rate optimization for bread wheat (Triticum aestivum L.) under irrigation in Metema and Belesa, Northwestern Ethiopia · 2026

    Same directionCites this paper

  6. negative
    The lowest N rates reduced grain number per square metre at any given photothermal quotient.

    The effects of radiation and nitrogen on number of grains in wheat · 1995

    Opposite direction

  7. negative
    Severe drought with low nitrogen reduced grain yields.

    Nitrogen Nutrition Improves the Potential of Wheat (Triticum aestivum L.) to Alleviate the Effects of Drought Stress during Vegetative Growth Periods · 2016

    Opposite direction

  8. negative
    Low nitrogen reduced grain yield to 4.3 t/ha.

    The Effects of Prolonged Drought and Nitrogen Fertilizer on Root and Shoot Growth and Water Uptake by Winter Wheat · 1989 · compared with both N and water

    Opposite direction

2,052 papers more in this group

See all 2,061 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.