Abstract
Abstract Selecting effective weed management options requires biological, ecological, and economic information. This study compared model-based to standard-herbicide weed control in a corn (Zea mays L.)/soybean [Glycine max (L.) Merr.] rotation that had a long-term history of different tillage and weed management practices. The model integrates weed population dynamics, herbicide efficacies, and economic information to evaluate preplant incorporated (PPI) or preemergence (PRE) weed control options based on weed seed bank size and postem-ergence (POST) strategies based on weed seedling densities. There were fewer weeds in standard-herbicide compared with model-based treatments. No-tillage had the greatest numbers of weeds 3 out of 4 years. Soybean yield was reduced the first year of the study in several treatments receiving model-based weed control and the third year in all model-based treatments. Corn yields were greatest in reduced tillage. Resuits of using model recommendations to control weeds were mix...
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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 4
Claim · model-written summary
Standard-herbicide weed control gave fewer weeds than model-based treatments in the corn/soybean rotation.
- Treatment
- standard-herbicidee1
- Interactor
- weedse1weed
- Outcome
- weedse1
- Direction
- fewere1
- Comparator
- model-based treatmentse1
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“There were fewer weeds in standard-herbicide compared with model-based treatments”
e0“This study compared model-based to standard-herbicide weed control in a corn (Zea mays L.)/soybean [Glycine max (L.) Merr.] rotation”
Claim · model-written summary
No-tillage had the greatest numbers of weeds in 3 of 4 years.
- Treatment
- No-tillagee2
- Interactor
- weedse2weed
- Outcome
- numbers of weedse2
- Direction
- greateste2
- Qualifier
- 3 out of 4 yearse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“No-tillage had the greatest numbers of weeds 3 out of 4 years”
e0“This study compared model-based to standard-herbicide weed control in a corn (Zea mays L.)/soybean [Glycine max (L.) Merr.] rotation”
Claim · model-written summary
Soybean yield was reduced in the first year of the study in several treatments receiving model-based weed control, and in the third year in all model-based treatments.
- Taxon
- Soybean
Glycine maxe3 - Treatment
- model-based weed controle3
- Outcome
- Soybean yielde3
- Direction
- reducede3
- Qualifier
- the first year of the studye3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Soybean yield was reduced the first year of the study in several treatments receiving model-based weed control and the third year in all model-based treatments”
Claim · model-written summary
Corn yields were greatest under reduced tillage.
- Taxon
- Corn
Zea mays subsp. mayse4 - Treatment
- reduced tillagee4
- Outcome
- Corn yieldse4
- Direction
- greateste4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Corn yields were greatest in reduced tillage”
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- no effect
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See all 1,099 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.