Claim · model-written summary
Johnsongrass control averaged below 40% with non-GR cultivars.
- Taxon
- soybean
Glycine maxt0 - Treatment
- non‐GR cultivarse0
- Interactor
- Sorghum halepense
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Sorghum halepensee0weedt1 - Outcome
- Control of perennial johnsongrasse0
- Value
- <40%e0
- Comparator
- GR cultivarse0
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleSettingDirectionQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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Verbatim
e0“Control of perennial johnsongrass [ Sorghum halepense (L.) Pers.] at the end of the study period averaged <40% when non‐GR cultivars were used and >93% when GR cultivars were used regardless of tillage treatment”
t0“Soybean”
t1“Soybean”
Title
Larry G. Heatherly; Stan R. Spurlock; Krishna N. Reddy Agronomy Journal 2004. doi:10.2134/agronj2004.0742
Other claims from this paper (8)
- Intervention effect Redvine control declined with shallow tillage and non-GR cultivars.
- Observation The decline in redvine control did not cause a yield decline.
- Intervention effect Johnsongrass control averaged above 93% with GR cultivars.
- Association The johnsongrass control difference was associated with lower yield.
- Intervention effect PRE plus POST management sometimes yielded lower profits than POST only.
- Association Fall tillage by weed-management interaction was not significant for yield.
- Association Fall tillage by weed-management interaction was not significant for net return.
- Recommendation The authors conclude deep tillage for perennial weed management is uneconomical.