Intervention effectmodel-written summary

Increasing nitrogen to 70 kg N/fed. increased spikes, grain weight and grain yield.

A claim from Response of some Barley Cultivars to Late Sowing Dates and Nitrogen Fertilizer Rates Under the New Valley Condition · 2017

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Increasing nitrogen to 70 kg N/fed. increased spikes, grain weight and grain yield.

Treatment
N fertilizer rates up to 70 kg N/fed.e0
Outcome
Number of spikes/m2, 1000 grain weight and grain yield/fed.e0
Direction
increasede0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

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

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Number of spikes/m2, 1000 grain weight and grain yield/fed. increased with increasing N fertilizer rates up to 70 kg N/fed.”

✓ located verbatim in the source · abstract, characters 1184–1307
t0

“Barley Cultivars”

✓ located verbatim in the source · title, characters 17–33

Title

Response of some Barley Cultivars to Late Sowing Dates and Nitrogen Fertilizer Rates Under the New Valley Condition

Assiut Journal of Agricultural Sciences/Assuit Journal of Agricultural Sciences 2017. doi:10.21608/ajas.2017.4633

Other claims from this paper (17)

Record rev-7baabc8a69309c5df14d92288e4bac4eb095b68679d5112ef3d9a11382777671 · schema claims-v0.9 · position 5 in the model’s answer

nitrogen · yield · Hordeum vulgare (barley)Positive and negative results

299 papers: 252 positive, 47 negative or no effect

251 papers in the same direction as this claim · 44 in the opposite direction · 3 reporting no difference from an alternative

  1. positive
    Increasing mineral nitrogen to 100 kg per feddan significantly increased grain, straw and biological yields and harvest index.

    Evaluation the Effect of N Mineral Fertilization in Combination with N Bio-Fertilizer on Barley Yield and its Components in Sandy Soil · 2019

    Same directionCites this paper

  2. negative
    High N rates could decrease the LER of barley–pea intercrops and could result in toxic nitrate levels in the forage.

    Row Configuration and Nitrogen Application for Barley–Pea Intercropping in Montana · 2004

    Opposite direction

  3. no effect
    N application generally did not significantly change dry matter yield at heading.

    Effect of seed-placed urea fertilizer and N-(n-butyl)thiophosphoric triamide (NBPT) on emergence and grain yield of barley · 1999

    Opposite direction

  4. negative
    Barley yield fell with seed-placed N only above 60 kg ha −1.

    Effect of Nitrogen Rate and Placement and Seeding Rate on Barley Productivity and Wild Oat Fecundity in a Zero Tillage System · 2008

    Opposite direction

  5. no effect
    Nitrogen rate did not alter leaf and primary tiller coordination in the remaining barley cultivars.

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

    Opposite direction

  6. negative
    Added nitrogen tended to depress barley grain yield in the driest years.

    Long-term yield patterns in barley-based cropping systems in Northern Syria. 2. The role of feed legumes · 2000

    Opposite direction

  7. negative
    Applying 200 kg N/ha significantly reduced barley yield relative to the 100 and 150 kg N/ha doses.

    Influence of nitrogen fertilizer on grain yield of barley (Hordeum vulgare L.) under irrigated conditions · 2003 · compared with 100 and 150 kg N ha-1 doses

    Opposite direction

  8. no effect
    Grain yield generally did not respond to nitrogen treatments.

    Yield and Yield Component Response of Spring Barley to Fertilizer Nitrogen · 1993

    Opposite direction

290 papers more in this group

See all 299 papers →

fertilization · yield · Hordeum vulgare (barley)Positive and negative results

550 papers: 473 positive, 77 negative or no effect

472 papers in the same direction as this claim · 66 in the opposite direction · 11 reporting no difference from an alternative

  1. no effect
    Neither phosphorus application nor mycorrhizal inoculation increased tiller number.

    Effects of Arbuscular Mycorrhizal Fungi and Phosphorus Fertilization on Growth and Nutrient Uptake of Barley Grown on Soils with Different Levels of Salts · 2003

    Opposite direction

  2. negative
    N fertilizer reduced relative yield totals.

    Root and Shoot Interactions Between Barley and Field Beans When Intercropped · 1982

    Opposite direction

  3. negative
    Nitrogen fertilizer alone did not raise yield on barley residue to yield on pulse residue.

    YIELD EFFECT OF PULSES ON SUBSEQUENT CEREAL CROPS IN THE NORTHERN PRAIRIES · 1990 · compared with pulse residue

    Opposite direction

  4. no effect
    Incorporation timing of feedlot cattle manure had no impact on soil or crop performance.

    Effect of rate, frequency and incorporation of feedlot cattle manure on soil nitrogen availability, crop performance and nitrogen use efficiency in east-central Saskatchewan · 2004

    Opposite direction

  5. no effect
    Cropping without nutrients did not significantly improve productivity of severely eroded land.

    EFFECTIVENESS OF MANURE AND COMMERCIAL FERTILIZER IN RESTORING PRODUCTIVITY OF AN ARTIFICIALLY ERODED DARK BROWN CHERNOZEMIC SOIL UNDER DRYLAND CONDITIONS · 1988

    Opposite direction

  6. negative
    Manure lowered barley seed yield relative to mineral fertilizer.

    Manure, Tillage, and Crop Rotation: Effects on Residual Weed Interference in Spring Barley Cropping Systems · 1998 · compared with mineral fertilizer

    Opposite direction

  7. no effect
    Nitrogen rate did not alter leaf and primary tiller coordination in the remaining barley cultivars.

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

    Opposite direction

  8. no effect
    Nitrogen topdressing did not affect tiller number at the end of shooting or harvest.

    Tillering Dynamics of Water Barley as Influenced by Cultivar and Nitrogen Fertilizer: A Field Study1 · 1984

    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.