Intervention effectmodel-written summary

Top dressing before irrigation in three splits improved wheat growth and yield attributes relative to after irrigation in four splits.

A claim from Nitrogen top dressing just before irrigation improves wheat growth, productivity and nitrogen use efficiency · 2019

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Top dressing before irrigation in three splits improved wheat growth and yield attributes relative to after irrigation in four splits.

Treatment
urea top dressed just before irrigation and nitrogen splitted in three equal dosese0
Outcome
crop growth, yield attributes and yielde0
Direction
bettere0
Comparator
urea top dressed after irrigation and nitrogen splitting in four equal dosese1

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier

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

“urea top dressed just before irrigation and nitrogen splitted in three equal doses led to better crop growth, yield attributes and yield of wheat”

✓ located verbatim in the source · abstract, characters 770–915
e1

“than urea top dressed after irrigation and nitrogen splitting in four equal doses”

✓ located verbatim in the source · abstract, characters 986–1067

Title

Nitrogen top dressing just before irrigation improves wheat growth, productivity and nitrogen use efficiency

Subhash Chander Gill; Ramesh Kumar Sharma; Subhash Chandra Tripathi; et al. Journal of Cereal Research 2019. doi:10.25174/2249-4065/2019/83006

Other claims from this paper (5)

Record rev-a3c9474389d17bc2b9b2786bf26c5e5da997a1694953ec1e8cca26b3d48ca264 · schema claims-v0.9 · position 1 in the model’s answer

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

989 papers: 798 positive, 191 negative or no effect

797 papers in the same direction as this claim · 184 in the opposite direction · 7 reporting no difference from an alternative

  1. positive
    T2 or T5 gave the highest wheat grain yield.

    Efficient nitrogen management in wheat through a combination of conventional and nano urea with optimized methods and timing · 2024

    Same directionCites this paper

  2. positive
    Three nitrogen splits raised wheat grain yield by 8.08% versus two splits.

    Influence of crop residue and nitrogen management on nutrient uptake, yield, and economics of rice-wheat cropping system · 2023 · compared with 2 splits, i.e. at sowing and after 1st irrigation

    Same directionCites this paper

  3. negative
    Minimum irrigation lowered average winter wheat yield by 14% versus full irrigation.

    Performance of Double‐Cropped Winter Wheat–Summer Maize under Minimum Irrigation in the North China Plain · 2006 · compared with fully irrigated treatment (FI)

    Opposite direction

  4. no effect
    Moderately saline water substituted for good quality water during part of the season maintained total wheat grain yield.

    Time of Salt Stress Affects Growth and Yield Components of Irrigated Wheat · 1994 · compared with good quality water

    Opposite direction

  5. negative
    Saline irrigation caused soil salinization and reduced wheat growth and yield.

    Effect of Straw Biochar on Soil Properties and Wheat Production under Saline Water Irrigation · 2019

    Opposite direction

  6. negative
    Deficit irrigation in salt-affected soil reduced wheat productivity.

    Collaborative Impact of Compost and Beneficial Rhizobacteria on Soil Properties, Physiological Attributes, and Productivity of Wheat Subjected to Deficit Irrigation in Salt Affected Soil · 2022

    Opposite direction

  7. negative
    Wastewater irrigation decreased plant height, leaf area and grain yield in wheat.

    Effect of Wastewater Irrigation on Photosynthesis, Growth, and Anatomical Features of Two Wheat Cultivars (Triticum aestivum L.) · 2020

    Opposite direction

  8. no effect
    An additional 33 mm of irrigation did not increase grain yield.

    Source–sink balance and manipulating sink–source relations of wheat indicate that the yield potential of wheat is sink-limited in high-rainfall zones · 2010

    Opposite direction

980 papers more in this group

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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
    T2 or T5 gave the highest wheat grain yield.

    Efficient nitrogen management in wheat through a combination of conventional and nano urea with optimized methods and timing · 2024

    Same directionCites this paper

  2. positive
    Biomass, grain yield and straw yield increased with nitrogen application up to 150 kg/ha.

    Optimizing nitrogen use efficiency and yield in wheat: insights from a comparative study of varieties under variable nitrogen inputs · 2025

    Same directionCites this paper

  3. 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

  4. 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

  5. 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

  6. negative
    Terminal spikelet production was delayed by about 2 d at these N treatments in Aroona.

    Leaf Emergence, Tiller Growth, and Apical Development of Nitrogen‐Dificient Spring Wheat · 1993

    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. no effect
    ear weight changed with two nitrogen treatments.

    Effect of source‐sink relations and nitrogen nutrition on senescence and N remobilization in the flag leaf of wheat · 1991

    Opposite direction

2,052 papers more in this group

See all 2,061 papers →

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

3,438 papers: 3,115 positive, 323 negative or no effect

3,114 papers in the same direction as this claim · 284 in the opposite direction · 39 reporting no difference from an alternative

  1. positive
    T2 produced 420 kg/ha more grain than T3.

    Efficient nitrogen management in wheat through a combination of conventional and nano urea with optimized methods and timing · 2024 · compared with top dressing at 7-10 days after irrigation with same dose

    Same directionCites this paper

  2. no effect
    Current high nitrogen practices do not significantly raise crop yields relative to optimum fertilization.

    Reducing environmental risk by improving N management in intensive Chinese agricultural systems · 2009 · compared with knowledge-based optimum N fertilization

    Opposite direction

  3. negative
    Wheat yield declined by 0.04 Mg ha −1 yr −1 with 75 and 100% N-P-K fertilizer.

    Yield and Soil Nutrient Changes in a Long‐Term Rice‐Wheat Rotation in India · 2002

    Opposite direction

  4. negative
    The authors concluded that N fertiliser could not compensate for the yield reduction in canola and wheat due to late sowing.

    Effects of sowing time and nitrogen fertiliser on canola and wheat, and nitrogen fertiliser on Indian mustard. I. Dry matter production, grain yield, and yield components · 2001

    Opposite direction

  5. negative
    Genetic gain in winter wheat yield without fertiliser N was 0.021 t ha −1 y −1, smaller than at 215–250 kg/ha N.

    Responses of grain yield, biomass and harvest index and their rates of genetic progress to nitrogen availability in ten winter wheat varieties · 2006 · compared with 215–250 kg/ha N

    Opposite direction

  6. no effect
    The fertilizing substances did not significantly change plant yields.

    The influence of chlorothalonil on the activity of soil microorganisms and enzymes · 2018

    Opposite direction

  7. no effect
    Compost did not significantly affect wheat grain yield, biomass or harvest index.

    Responses of Wheat Yield, Macro- and Micro-Nutrients, and Heavy Metals in Soil and Wheat following the Application of Manure Compost on the North China Plain · 2016

    Opposite direction

  8. no effect
    Wheat yields were similar in fertilized fallow and unfertilized green-manure plots.

    Wheat Yields, Nitrogen Uptake, and Soil Moisture Following Winter Legume Cover Crop vs. Fallow · 1998 · compared with unfertilized plots following a green manure crop

    Opposite direction

3,429 papers more in this group

See all 3,438 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.