Intervention effectmodel-written summary

Johnsongrass control methods did not affect the interference duration effects on corn grain yield.

A claim from The Critical Period of Johnsongrass (Sorghum halepense) Control in Field Corn (Zea mays) · 1996

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Johnsongrass control methods did not affect the interference duration effects on corn grain yield.

Treatment
johnsongrass control methodse1
Interactor
johnsongrassSorghum halepensee1weed
Outcome
Interference duration effects on corn grain yielde1
Direction
no_changeinferrede1

Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleComparatorSettingValueQualifier

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 ↗
Sorghum halepense
Sorghum halepense · InteractorMatt Lavin from Bozeman, Montana, USA · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e1

“Interference duration effects on corn grain yield were not affected by johnsongrass control methods”

✓ located verbatim in the source · abstract, characters 264–363

Title

The Critical Period of Johnsongrass (Sorghum halepense) Control in Field Corn (Zea mays)

Hani Z. Ghosheh; David L. Holshouser; James M. Chandler Weed Science 1996. doi:10.1017/s0043174500094960

Other claims from this paper (1)

Record rev-eb3ba468e36f50da85c368aeef96203f708c3a435780872d1f70f29de60dd6bc · schema claims-v0.9 · position 1 in the model’s answer

Sorghum halepense · yield · Zea mays (maize)Positive and negative results

6 papers: 3 positive, 3 negative or no effect

2 papers in the same direction as this claim · 3 in the opposite direction

  1. negative
    Corn-silage and corn-grain yields were 10 to 14% less than weed-free corn yield when grown with johnsongrass from rhizomes (4 WAS) or from seed (6 WAS).

    Interference between corn and johnsongrass (Sorghum halepense) from seed or rhizomes · 2003 · compared with weed-free corn yield

    Same directionCites this paper

  2. positive
    Johnsongrass control significantly increased corn forage yield in five of seven trials.

    Yield and Quality of Silage Corn as Altered by Johnsongrass Infestation · 1993

    Opposite direction

  3. positive
    Earlier nicosulfuron treatment gave greater corn yield than later treatment.

    Reducing Johnsongrass (Sorghum halepense) Interference in Corn (Zea mays) with Herbicides and Cultivation · 1995 · compared with a later application to 60-cm-tall johnsongrass

    Opposite direction

  4. positive
    Johnsongrass residue maximized cob length, biological yield and kernel yield versus a weedy check.

    Allelopathic Response and Farmer Awareness in Maize Weed Management using Sunflower and Johnsongrass Residues · 2025 · compared with weedy check

    Opposite direction

  5. negative
    Johnsongrass reduced maize grain yield by 5% in 1991.

    Radiation‐Use Efficiency and Grain Yield of Maize Competing with Johnsongrass · 1994

    Same direction

See all 6 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.