Intervention effectmodel-written summary

Rotation had higher yield variance than monoculture.

A claim from Separating the Impacts of Crop Diversification and Rotations on Risk · 2001

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Rotation had higher yield variance than monoculture.

Treatment
corn–soybean rotatione0
Outcome
yield variancee0
Direction
highere0
Comparator
monoculturee2

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier

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

“the corn–soybean rotation had a higher yield variance”

✓ located verbatim in the source · abstract, characters 845–898
e1

“corn ( Zea mays L.) and soybean”

✓ located verbatim in the source · abstract, characters 321–352
e2

“monoculture practices”

✓ located verbatim in the source · abstract, characters 645–666

Title

Separating the Impacts of Crop Diversification and Rotations on Risk

Glenn A. Helmers; Charles F. Yamoah; Gary E. Varvel Agronomy Journal 2001. doi:10.2134/agronj2001.1337

Other claims from this paper (4)

Record rev-fe8b20b56d3a3ef7d6b53a2af77dca25a67f5913a4f480472fe384a2efb2829a · schema claims-v0.9 · position 5 in the model’s answer

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

322 papers: 254 positive, 68 negative or no effect

67 papers in the same direction as this claim · 254 in the opposite direction

  1. positive
    The maize-cotton rotation raised maize yield by 47% versus continuous conventional maize in the first reported year.

    ROTATION IN CONSERVATION AGRICULTURE SYSTEMS OF ZAMBIA: EFFECTS ON SOIL QUALITY AND WATER RELATIONS · 2010 · compared with maize in the conventionally ploughed control

    Opposite directionCites this paper

  2. positive
    Corn following soybean in a four-year rotation yielded more grain than other rotations in three of four years.

    Crop Yield as Affected by Rotation and Nitrogen Rate. III. Corn · 1989 · compared with other rotations

    Opposite directionCited by this paper

  3. positive
    Corn yield in rotation with soybean and wheat increased by 5% in the plow tillage system when wheat was underseeded with red clover.

    Impact of Tillage and Rotation on Yield and Economic Performance in Corn‐Based Cropping Systems · 2006

    Opposite directionCites this paper

  4. positive
    At Elora, wheat increased conventional tillage first-year corn yield with red clover by 0.43 Mg ha −1 (4.2%).

    Corn and soybean yields and returns are greater in rotations with wheat · 2021

    Opposite directionCites this paper

  5. positive
    Corn grown in rotation yielded 0.6 to 0.9 Mg ha −1 more than continuous or second-year corn.

    Agronomic and Economic Benefits of Rotating Corn with Soybean and Spring Wheat under Different Tillage in Eastern Canada · 2019 · compared with continuous corn

    Opposite directionCites this paper

  6. no effect
    Corn yield in the ORG rotation was not significantly different from that in the CONV monoculture.

    Weed community and corn yield variability in diverse management systems · 2006 · compared with CONV monoculture

    Same directionCites this paper

  7. no effect
    Second year maize yield was unaffected by crop rotation.

    Productivity and stability of grain yield in maize and sorghum as affected by rotational cropping systems in the north western Free State · 2004

    Same directionCites this paper

  8. positive
    Semiperennial rotation reduced maize yield variability from 22% to 13% relative to monoculture.

    Biodiversity can support a greener revolution in Africa · 2010 · compared with monoculture

    Opposite direction

313 papers more in this group

See all 322 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.