Abstract
Herbicide-resistant crops, such as glyphosate-resistant (GR) soybean, allow for broad-spectrum, flexible weed control with minimal crop injury; however, the development of GR weeds, such as horseweed, has forced reliance on alternative herbicides for control of these weeds. While preplant (PP) herbicides provide excellent control of GR-horseweed, there are currently no POST herbicide control options within soybean. The objective of this study was to evaluate the efficacy of dicamba for the control of GR-horseweed when applied PP, POST, and sequentially in dicamba-resistant soybean. Dicamba applied PP at 600 g a.e. ha −1 provided 90 to 100% control of GR-horseweed 8 wk after application (WAA) across three field trials conducted in Ontario in 2011 and 2012. Similarly, sequential applications provided 91 to 100% control. This technology provides a much-needed POST option of dicamba to be applied as a rescue treatment to control weed escapes caused by late emergence or poor initial control following a PP herbicide application.
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Claims 3
Claim · model-written summary
Preplant dicamba controlled GR-horseweed by 90 to 100% at 8 weeks across three Ontario trials.
- Taxon
- soybean
Glycine maxt0 - Treatment
- Dicamba applied PP at 600 g a.e. ha −1e0
- Interactor
- GR-horseweede0weed
- Outcome
- control of GR-horseweede0
- Direction
- controle0
- Value
- 90 to 100%e0
- Setting
- Ontarioe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dicamba applied PP at 600 g a.e. ha −1 provided 90 to 100% control of GR-horseweed 8 wk after application (WAA) across three field trials conducted in Ontario in 2011 and 2012”
t0“Soybean”
Claim · model-written summary
Sequential dicamba applications controlled GR-horseweed by 91 to 100%.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- sequential applicationse0
- Interactor
- Horseweed
Erigeron canadensist0weed - Outcome
- controle0
- Direction
- controle0
- Value
- 91 to 100%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Similarly, sequential applications provided 91 to 100% control”
t0“Glyphosate-Resistant Horseweed (Conyza canadensis) with Dicamba Applied Preplant and Postemergence in Dicamba-Resistant Soybean”
Claim · model-written summary
The authors present postemergence dicamba as a rescue option for escaped horseweed.
- Taxon
- SoybeanGlycine maxt0
- Interactor
- horseweedErigeron canadensist0weed
- Outcome
- POST option of dicamba to be applied as a rescue treatment to control weed escapese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This technology provides a much-needed POST option of dicamba to be applied as a rescue treatment to control weed escapes caused by late emergence or poor initial control following a PP herbicide application”
t0“horseweed (Conyza canadensis) with Dicamba Applied Preplant and Postemergence in Dicamba-Resistant Soybean”
The same questions in other papers
dicamba · control · Glycine max (soybean)Positive and negative results
26 papers in the same direction as this paper · 2 in the opposite direction · 2 reporting no difference from an alternative
- positive
- positive
- positive
27 papers more in this group
See all 31 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.