Abstract
Field experiments were conducted across the north-central United States to determine the benefits of various weed control strategies in corn. Weed control, corn yield, and economic return increased when a preemergence (PRE) broad-spectrum herbicide was followed by (fb) postemergence (POST) herbicides. Weed control decisions based on field scouting after a PRE broad-spectrum herbicide application increased weed control and economic return. Application of a PRE grass herbicide fb a POST herbicide based on field scouting resulted in less control of velvetleaf and morningglory species, corn yield, and economic return compared with a PRE broad-spectrum herbicide application fb scouting. Cultivation after a PRE broad-spectrum herbicide application increased weed control and corn yield compared with the herbicide applied alone, but economic return was not increased. An early-postemergence herbicide application fb cultivation resulted in the highest level of broadleaf weed control, the highest corn yield, and the greatest economic return compared with all other strategies. Weed control based on scouting proved to be useful in reducing the effect of weed escapes on corn yield and increased economic return compared with PRE herbicide application alone. However, economic return was not greater than the PRE fb planned POST or total POST strategies.
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Claims 8
Claim · model-written summary
PRE followed by POST herbicides increased weed control, corn yield and return.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- a preemergence (PRE) broad-spectrum herbicide was followed by (fb) postemergence (POST) herbicidese0
- Outcome
- Weed control, corn yield, and economic returne0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weed control, corn yield, and economic return increased when a preemergence (PRE) broad-spectrum herbicide was followed by (fb) postemergence (POST) herbicides.”
Claim · model-written summary
Scouting after PRE broad-spectrum herbicide increased weed control and return.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- field scouting after a PRE broad-spectrum herbicide applicatione0
- Outcome
- weed control and economic returne0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weed control decisions based on field scouting after a PRE broad-spectrum herbicide application increased weed control and economic return.”
t0“Corn”
Claim · model-written summary
PRE grass herbicide followed by scouted POST gave less velvetleaf and morningglory control, corn yield and return than broad-spectrum PRE followed by scouting.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- a PRE grass herbicide fb a POST herbicide based on field scoutinge0
- Interactor
- velvetleaf and morningglory speciese0weed
- Outcome
- control of velvetleaf and morningglory species, corn yield, and economic returne0
- Direction
- lesse0
- Comparator
- a PRE broad-spectrum herbicide application fb scoutinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of a PRE grass herbicide fb a POST herbicide based on field scouting resulted in less control of velvetleaf and morningglory species, corn yield, and economic return compared with a PRE broad-spectrum herbicide application fb scouting.”
Claim · model-written summary
Cultivation after PRE broad-spectrum herbicide increased weed control and corn yield versus herbicide alone.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- Cultivation after a PRE broad-spectrum herbicide applicatione0
- Outcome
- weed control and corn yielde0
- Direction
- increasede0
- Comparator
- the herbicide applied alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultivation after a PRE broad-spectrum herbicide application increased weed control and corn yield compared with the herbicide applied alone”
Claim · model-written summary
The same cultivation did not increase economic return.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Cultivation after a PRE broad-spectrum herbicide applicatione0
- Outcome
- economic returne0
- Direction
- not increasede0
- Comparator
- the herbicide applied alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultivation after a PRE broad-spectrum herbicide application increased weed control and corn yield compared with the herbicide applied alone, but economic return was not increased.”
t0“Corn”
Claim · model-written summary
Early POST herbicide followed by cultivation had highest broadleaf weed control, corn yield and return.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- An early-postemergence herbicide application fb cultivatione0
- Outcome
- broadleaf weed control, the highest corn yield, and the greatest economic returne0
- Direction
- higheste0
- Comparator
- all other strategiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An early-postemergence herbicide application fb cultivation resulted in the highest level of broadleaf weed control, the highest corn yield, and the greatest economic return compared with all other strategies.”
Claim · model-written summary
Scouting-based control reduced weed escape effects on corn yield and increased return versus PRE alone.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- Weed control based on scoutinge0
- Outcome
- the effect of weed escapes on corn yield and increased economic returne0
- Direction
- reducinge0
- Comparator
- PRE herbicide application alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weed control based on scouting proved to be useful in reducing the effect of weed escapes on corn yield and increased economic return compared with PRE herbicide application alone.”
Claim · model-written summary
Scouting did not give greater economic return than PRE followed by planned POST or total POST.
- Taxon
- CornZea mays subsp. mayst0
- Outcome
- economic returne0
- Direction
- not greatere0
- Comparator
- the PRE fb planned POST or total POST strategiese0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“economic return was not greater than the PRE fb planned POST or total POST strategies.”
t0“Corn”
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