Intervention effectmodel-written summary

Seeding intercrops when corn was 0.15 to 0.30 m high did not change first-year corn grain yield.

A claim from Contributions of Ground Cover, Dry Matter, and Nitrogen from Intercrops and Cover Crops in a Corn Polyculture System1 · 1987

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Seeding intercrops when corn was 0.15 to 0.30 m high did not change first-year corn grain yield.

Treatment
seeding intercropse0
Outcome
First‐year corn grain yieldse0
Direction
neither increased nor decreasede0
Qualifier
0.15 to 0.30 m highe0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“First‐year corn grain yields were neither increased nor decreased as a result of seeding intercrops when the corn was 0.15 to 0.30 m high.”

✓ located verbatim in the source · abstract, characters 860–998

Title

Contributions of Ground Cover, Dry Matter, and Nitrogen from Intercrops and Cover Crops in a Corn Polyculture System1

T. W. Scott; J. Mt. Pleasant; R. F. Burt; et al. Agronomy Journal 1987. doi:10.2134/agronj1987.00021962007900050007x

Other claims from this paper (4)

Record rev-265fa0a2b8a4af656b2b35d4fc8a14aa8a0d8c278be28b737f5c9aad88e89b93 · schema claims-v0.9 · position 1 in the model’s answer

intercropping · yield · Zea mays (maize)Positive and negative results

834 papers: 613 positive, 221 negative or no effect

220 papers in the same direction as this claim · 613 in the opposite direction

  1. positive
    Intercropped corn yielded more at a coarse-textured site in 2007.

    Intercropping Corn and Kura Clover: Response to Nitrogen Fertilization · 2010

    Opposite directionCites this paper

  2. positive
    Maize grain yield in sole cropping was significantly higher than in intercropping in both seasons.

    Grain yield and biomass response of a maize/dry bean intercrop to maize density and dry bean variety · 2012 · compared with intercropping

    Opposite directionCites this paper

  3. positive
    Intercropping with faba bean significantly improved maize grain yield at lower P fertilizer rates compared with maize grown with wheat.

    Diversity enhances agricultural productivity via rhizosphere phosphorus facilitation on phosphorus-deficient soils · 2007 · compared with maize grown with wheat

    Opposite direction

  4. positive
    Yield gain was substantially greater in maize intercrops than in intercrops without maize

    Yield gain, complementarity and competitive dominance in intercropping in China: A meta-analysis of drivers of yield gain using additive partitioning · 2019 · compared with intercrops without maize

    Opposite direction

  5. positive
    All four intercropping systems had greater grain yields than monocropping.

    Intercropping Enhances Productivity and Maintains the Most Soil Fertility Properties Relative to Sole Cropping · 2014 · compared with corresponding monocropping

    Opposite direction

  6. positive
    In Lemu, CA maize–legume intercrop yielded 2.3 Mg ha −1 more than conventional tillage in 2009/10.

    Conservation agriculture systems for Malawian smallholder farmers: long-term effects on crop productivity, profitability and soil quality · 2012 · compared with conventional tillage

    Opposite direction

  7. positive
    LER values were greater in all intercropping systems with different planting ratios, indicating a yield advantage of intercropping over sole cropping of maize.

    The role of intercropping maize ( Zea mays L.) and Cowpea ( Vigna unguiculata L.) on yield and soil chemical properties · 2010 · compared with sole cropping of maize

    Opposite direction

  8. positive
    NS and SS intercropping had yield advantages over monoculture.

    Belowground Interactions Impact the Soil Bacterial Community, Soil Fertility, and Crop Yield in Maize/Peanut Intercropping Systems · 2018 · compared with monoculture

    Opposite direction

825 papers more in this group

See all 834 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.