Intervention effectmodel-written summary

Early nitrogen addition increased vegetative growth.

A claim from THE EFFECT OF NITROGEN TOP DRESSING ON YIELD AND PROTEIN CONTENT OF NITROGEN-DEFICIENT CEREALS · 1960

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Early nitrogen addition increased vegetative growth.

Taxon
barley and oatsAvena sativaHordeum vulgaret0
Treatment
addition of nitrogen in the early stages of plant growthe0
Outcome
vegetative growthe0
Direction
increasede0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

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

Avena sativa
Avena sativa · TaxonSendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗
Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The addition of nitrogen in the early stages of plant growth resulted in increased vegetative growth and increased yields.”

✓ located verbatim in the source · abstract, characters 145–267
t0

“crops of barley and oats showing symptoms”

✓ located verbatim in the source · abstract, characters 73–114

Title

THE EFFECT OF NITROGEN TOP DRESSING ON YIELD AND PROTEIN CONTENT OF NITROGEN-DEFICIENT CEREALS

D. K. McBeath; J. A. Toogood Canadian Journal of Soil Science 1960. doi:10.4141/cjss60-018

Other claims from this paper (4)

Record rev-767526ed930441eeb9575161afae22dd879ff2f78d0831411ffd72280ef353e6 · schema claims-v0.9 · position 1 in the model’s answer

nitrogen · growth · Hordeum vulgare (barley)Results differ

110 papers: 66 positive, 44 negative or no effect

65 papers in the same direction as this claim · 42 in the opposite direction · 2 reporting no difference from an alternative

  1. positive
    Rate and timing of spring N application increased barley forage dry matter yields.

    Effect of Spring Nitrogen Application on Barley Forage Yields and Silage Fermentation · 1991

    Same directionCites this paper

  2. no effect
    Topsoil nitrogen supply showed no clear effect on root intensity, depth, or density.

    Intercropping effect on root growth and nitrogen uptake at different nitrogen levels · 2014

    Opposite direction

  3. no effect
    Lower nitrogen supply had no effect on final leaves initiated in the barley apex.

    The influence of fertiliser nitrogen application on development and number of reproductive primordia in field-grown two- and six-rowed barleys · 2004

    Opposite direction

  4. negative
    Low nitrogen reduced mean shoot dry weight by 50%.

    Genome-Wide Association Study and Identification of Candidate Genes for Nitrogen Use Efficiency in Barley (Hordeum vulgare L.) · 2020

    Opposite direction

  5. no effect
    Two days of nitrate starvation did not significantly affect dry matter increment.

    Nitrate utilization in barley: relations to nitrate supply and light/dark cycles · 1988

    Opposite direction

  6. negative
    Delay in nitrate application reduced dry weight of the first leaf of barley.

    Growth and Photosynthesis in the First Leaf of Barley The Effect of Time of Application of Nitrogen · 1972

    Opposite direction

  7. no effect
    Nitrogen application did not affect dry weight per main stem.

    Response of winter barley cultivars to nitrogen and a plant growth regulator in relation to lodging · 1991

    Opposite direction

  8. no effect
    Broadcast urea with 10% biuret did not damage barley germination.

    The Germination of Small Grain and Corn as Influenced by Urea and Other Nitrogenous Fertilizers · 1960

    Opposite direction

101 papers more in this group

See all 110 papers →

nitrogen · growth · Avena sativa (oats)Positive and negative results

48 papers: 38 positive, 10 negative or no effect

37 papers in the same direction as this claim · 10 in the opposite direction

  1. negative
    Increasing N increased lodging.

    The influence of nitrogen, phosphorus and potash fertilizer application on oat yield and quality · 2007

    Opposite direction

  2. no effect
    After about 15 days, LAN and AN rates of 25 to 125 kg N ha-1 gave no significant difference in wild oat emergence.

    The effect of nitrogen fertilizers on the germination and seedling emergence of wild oat (A. fatua L.) seed in different soil types · 1989

    Opposite direction

  3. negative
    Urea reduced in vitro dry matter disappearance versus unfertilized forage.

    Net effects of nitrogen fertilization on the nutritive value and digestibility of oat forages · 2017 · compared with unfertilized forages

    Opposite direction

  4. negative
    Applied nitrogen significantly increased lodging.

    Effects of nitrogen fertilizer on the grain yield and quality of winter oats · 1998

    Opposite direction

  5. negative
    Eliminating nitrogen decreased plant height of oats

    Aphid Populations on Oats Grown in Various Nutrient Solutions1 · 1959

    Opposite direction

  6. no effect
    Application of N fertilizer at various rates had no effect on LAD.

    Leaf Area Duration of Oat at High Latitudes · 1997

    Opposite direction

  7. negative
    Root diphenamid reduced oat root and shoot growth.

    Uptake, Translocation, and Herbicidal Effect of Diphenamid · 1970

    Opposite direction

  8. no effect
    Anhydrous ammonia at 120 lb of nitrogen an acre had no effect on oat seed germination.

    The effect of herbicides, anhydrous ammonia and seed ing rate on winter production of oats sod-sown into grass dominant pasture · 1966

    Opposite direction

39 papers more in this group

See all 48 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.