Claim · model-written summary
Sequential clopyralid at 200 g ai ha-1 caused 9% visible wheat injury.
- Taxon
- winter wheat
Triticum aestivume1 - Treatment
- Sequential applications of clopyralid (fall fb spring)e0
- Outcome
- visible injurye0
- Direction
- resulted ine0
- Value
- 9e0
- Qualifier
- 100, 200, and 400 g ai ha-1e2
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sequential applications of clopyralid (fall fb spring) resulted in 4, 9, and 17% visible injury at the same respective rates.”
e1“sensitivity of winter wheat to clopyralid”
e2“clopyralid (100, 200, and 400 g ai ha-1)”
Title
Winter Wheat Tolerance to Clopyralid Applied in the Fall, Spring, or Fall Followed by Spring
Nader Soltani; Christy Shropshire; Peter H. Sikkema Journal of Agricultural Science 2025. doi:10.5539/jas.v17n5p21
Other claims from this paper (15)
- Observation No visible injury was observed at 1, 2, or 4 weeks after clopyralid treatment.
- Intervention effect Fall clopyralid application caused no winter wheat injury at any tested rate.
- Intervention effect Spring clopyralid at 100 g ai ha-1 caused 3% visible wheat injury.
- Intervention effect Spring clopyralid at 200 g ai ha-1 caused 7% visible wheat injury.
- Intervention effect Spring clopyralid at 400 g ai ha-1 caused 14% visible wheat injury.
- Intervention effect Sequential clopyralid at 100 g ai ha-1 caused 4% visible wheat injury.
- Intervention effect Sequential clopyralid at 400 g ai ha-1 caused 17% visible wheat injury.
- Intervention effect Across rates and timings, clopyralid had no significant effect on wheat height or seed moisture.
- Intervention effect Fall clopyralid at all tested rates did not affect wheat yield.
- Intervention effect Spring clopyralid at 100 or 200 g ai ha-1 had no impact on wheat yield.
- Intervention effect Spring clopyralid at 400 g ai ha-1 reduced wheat yield by 19%.
- Intervention effect Sequential clopyralid at 100 fb 100 or 200 fb 200 g ai ha-1 had no significant wheat-yield effect.
- Intervention effect Sequential clopyralid at 400 fb 400 g ai ha-1 reduced wheat yield by 17%.
- Recommendation The authors conclude that label-rate clopyralid applied in fall, spring or sequentially has no adverse effect on winter wheat.
- Recommendation The authors warn that clopyralid spray overlap can cause unacceptable wheat injury and yield loss.