Intervention effectmodel-written summary

Three-year cotton-corn-wheat-soybean rotation gave little long-term cotton yield advantage beyond soil organic carbon effects.

A claim from A Historical Summary of Alabama's Old Rotation (circa 1896): The World's Oldest, Continuous Cotton Experiment · 2008

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Three-year cotton-corn-wheat-soybean rotation gave little long-term cotton yield advantage beyond soil organic carbon effects.

Treatment
corn, winter wheat ( Triticum aestivum L.), and soybean [ Glycine max (L.) Merr.] in a 3‐yr rotatione0
Outcome
cotton yield advantagee0
Direction
littlee0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

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

Gossypium hirsutum
Gossypium hirsutum · TaxonChriKo · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“rotating cotton with corn ( Zea mays L.) in a 2‐yr rotation or with corn, winter wheat ( Triticum aestivum L.), and soybean [ Glycine max (L.) Merr.] in a 3‐yr rotation produced little long‐term cotton yield advantage beyond that associated with SOC.”

✓ located verbatim in the source · abstract, characters 490–740
t0

“Cotton”

✓ located verbatim in the source · title, characters 92–98

Title

A Historical Summary of Alabama's Old Rotation (circa 1896): The World's Oldest, Continuous Cotton Experiment

Charles C. Mitchell; Dennis P. Delaney; Kipling S. Balkcom Agronomy Journal 2008. doi:10.2134/agronj2007.0395

Other claims from this paper (11)

Record rev-8aa67cd4a2f0cd42a7cacb555b1b612fcd750607e2b932c49456bf0f951e5700 · schema claims-v0.9 · position 5 in the model’s answer

Zea mays subsp. mays · yield · Gossypium hirsutum (cotton)Positive and negative results

11 papers: 8 positive, 3 negative or no effect

2 papers in the same direction as this claim · 8 in the opposite direction

  1. positive
  2. positive
  3. positive
  4. positive
  5. positive
  6. positive
  7. positive
  8. positive

2 papers more in this group

See all 11 papers →

Glycine max · yield · Gossypium hirsutum (cotton)Positive and negative results

27 papers: 18 positive, 9 negative or no effect

8 papers in the same direction as this claim · 18 in the opposite direction

  1. positive
  2. positive
  3. positive
  4. positive
  5. positive
  6. positive
  7. positive
  8. positive

18 papers more in this group

See all 27 papers →

Triticum aestivum · yield · Gossypium hirsutum (cotton)Positive and negative results

30 papers: 21 positive, 9 negative or no effect

8 papers in the same direction as this claim · 21 in the opposite direction

  1. positive
  2. positive
  3. positive
  4. positive
  5. positive
  6. positive
  7. positive
  8. positive

21 papers more in this group

See all 30 papers →

3 of 4 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.

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.