Intervention effectmodel-written summary

Nitrogen fertilizer might increase collard yield.

A claim from Agronomic Performance of Collards under Two Intercrops and Varying Nitrogen Application Levels as Assessed Using Land Equivalent Ratios · 2011

Intervention effectauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen fertilizer might increase collard yield.

Treatment
application of nitrogenous fertilizere3
Outcome
yielde3
Direction
increasee3

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

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

Brassica oleracea var. viridis
Brassica oleracea var. viridis · TaxonAnn Perry · Public domain · Wikimedia Commons ↗

Verbatim

t0

“Collards”

✓ located verbatim in the source · title, characters 25–33
e3

“application of nitrogenousfertilizer might lead to increase in yield”

✓ located verbatim in the source · abstract, characters 970–1038

Title

Agronomic Performance of Collards under Two Intercrops and Varying Nitrogen Application Levels as Assessed Using Land Equivalent Ratios

Samuel Kilonzo Mutiga; Linnet S. Gohole; Elmada. O. Auma Journal of Agricultural Science 2011. doi:10.5539/jas.v3n1p22

Other claims from this paper (7)

Record rev-10fc7848c052daba7dfc20edf9909f8dc880c917f59caf1f4921d274989c32c5 · schema claims-v0.9 · position 3 in the model’s answer

fertilization · yield · Brassica oleracea (wild cabbage)Positive and negative results

496 papers: 445 positive, 51 negative or no effect

444 papers in the same direction as this claim · 43 in the opposite direction · 8 reporting no difference from an alternative

  1. no effect
    P did not significantly change cabbage yields.

    Effects of Nitrogen and Phosphorus Fertilization on Plant Growth and Nitrate Accumulation in Vegetables · 2004

    Opposite direction

  2. negative
    Cauliflower and Brussels sprouts yields were higher in the fertilizer-amended plot than in the compost plot.

    Soil Fertility, Yield and Nutrient Contents of Vegetable Crops after 12 Years of Compost or Fertilizer Amendments · 2005 · compared with compost

    Opposite direction

  3. negative
    Vegetable yields under compost treatments were lower than under mineral fertilizers during the first two years.

    Enhanced Food Quality: Effects of Composts on the Quality of Plant Foods · 1993 · compared with mineral fertilizers

    Opposite direction

  4. no effect
    Cabbage yield was not significantly affected by SMC.

    Spent Mushroom Compost as a Soil Amendment for Vegetables · 1984

    Opposite direction

  5. no effect
    Sulfur fertilization had no effect on kohlrabi tuber yield.

    The effect of nitrogen and sulphur fertilization on yield and quality of kohlrabi (Brassica oleracea, L.) · 2008

    Opposite direction

  6. no effect
    Changing fertilizer timing through fertigation did not affect broccoli yield.

    No Tillage and Strip Tillage Effects on Plant Performance, Weed Suppression, and Profitability in Transitional Organic Broccoli Production · 2016

    Opposite direction

  7. no effect
    Annual compost had little effect on vegetable nitrogen uptake and yield.

    Winter cover crops increased nitrogen availability and efficient use during eight years of intensive organic vegetable production · 2022

    Opposite direction

  8. negative
    Higher nutrient solution conductivity reduced cauliflower inflorescence yield.

    CAULIFLOWER GROWTH AND YIELD IN A HYDROPONIC SYSTEM WITH BRACKISH WATER · 2020

    Opposite direction

487 papers more in this group

See all 496 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.