Claim · model-written summary
Hemp dogbane appeared by 1980 and was densest under no-tillage.
- Taxon
- corn and soybean
Glycine maxZea mays subsp. mayse7
- Treatment
- no-tillagee0
- Interactor
- Hemp dogbane
Apocynum cannabinume0weed
- Outcome
- Hemp dogbanee0
- Direction
- greatest densitiese0
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e7“corn and soybean production”
e0“Hemp dogbane was observed by 1980, with the greatest densities in no-tillage.”
Title
Perennial Weed Populations After 14 Years of Variable Tillage and Cropping Practices
Douglas D. Buhler; David E. Stoltenberg; Roger L. Becker; et al. Weed Science 1994. doi:10.1017/s0043174500080280
Other claims from this paper (6)
- Intervention effect Continuous corn under no-tillage had greater hemp dogbane density by 1990 than other combinations.
- Intervention effect American germander density was unaffected by tillage in 1980 and 1981.
- Intervention effect By 1990, American germander was denser in moldboard-plowed corn/soybean rotation than under other tillage.
- Observation Field bindweed developed mainly in corn/soybean rotations and was densest under no-tillage.
- Intervention effect Reduced tillage produced larger, more diverse perennial weed populations than moldboard plowing.
- Association Annual weed control practices and environmental factors interacted with tillage to regulate perennial weed populations.