Abstract
Effects of tillage and herbicide application method on the persistence and residual activity of clomazone, imazaquin, and imazethapyr were investigated in a 2-yr field study. Herbicides were applied preemergence and preplant incorporated to conventional- and reduced-tillage soybeans in 1987 and 1988. Herbicide dissipation was monitored using chromatographic and bioassay techniques. In 1987, dissipation rates for clomazone, imazaquin, and imazethapyr were similar, regardless of tillage system or application method. In 1988, all three herbicides applied preplant incorporated dissipated more slowly than in preemergence treatments. Corn planted in rotation in 1989 displayed greater levels of injury in the incorporated treatments for all three herbicides. Although herbicide concentrations were similar 322 d following application in both tillage treatments in 1989, corn injury was greater with imazaquin and imazethapyr and less with clomazone in the reduced-tillage plots than in the conventional-tillage treatments.
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Claims 6
Claim · model-written summary
Dissipation rates of clomazone, imazaquin and imazethapyr in 1987 were similar regardless of tillage system or application method.
- Taxon
- soybeans
Glycine maxe0 - Treatment
- tillage system or application methode1
- Outcome
- dissipation ratese1
- Direction
- similare1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to conventional- and reduced-tillage soybeans in 1987 and 1988”
e1“In 1987, dissipation rates for clomazone, imazaquin, and imazethapyr were similar, regardless of tillage system or application method”
Claim · model-written summary
In 1988, herbicides applied preplant incorporated dissipated more slowly than under preemergence treatment.
- Taxon
- soybeansGlycine maxe0
- Treatment
- preplant incorporatede2
- Outcome
- dissipatede2
- Direction
- more slowlye2
- Qualifier
- In 1988e2
- Comparator
- preemergence treatmentse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to conventional- and reduced-tillage soybeans in 1987 and 1988”
e2“In 1988, all three herbicides applied preplant incorporated dissipated more slowly than in preemergence treatments”
Claim · model-written summary
Corn planted in rotation in 1989 showed greater injury in the incorporated treatments for all three herbicides.
- Taxon
- Corn
Zea mays subsp. mayse3 - Treatment
- incorporatede3
- Outcome
- injurye3
- Direction
- greater levelse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Corn planted in rotation in 1989 displayed greater levels of injury in the incorporated treatments for all three herbicides”
Claim · model-written summary
Herbicide concentrations were similar 322 d after application in both tillage treatments in 1989.
- Taxon
- CornZea mays subsp. mayse3
- Treatment
- tillage treatmentse4
- Outcome
- herbicide concentrationse4
- Direction
- similare4
- Qualifier
- 322 d following applicatione4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Corn planted in rotation in 1989 displayed greater levels of injury in the incorporated treatments for all three herbicides”
e4“Although herbicide concentrations were similar 322 d following application in both tillage treatments in 1989”
Claim · model-written summary
Corn injury was greater with imazaquin and imazethapyr in reduced-tillage plots than in conventional-tillage treatments.
- Taxon
- cornZea mays subsp. mayse5
- Treatment
- reduced-tillage plotse5
- Outcome
- corn injurye5
- Direction
- greatere5
- Qualifier
- imazaquin and imazethapyre5
- Comparator
- conventional-tillage treatmentse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“corn injury was greater with imazaquin and imazethapyr and less with clomazone in the reduced-tillage plots than in the conventional-tillage treatments”
Claim · model-written summary
Corn injury was less with clomazone in reduced-tillage plots than in conventional-tillage treatments.
- Taxon
- cornZea mays subsp. mayse5
- Treatment
- reduced-tillage plotse5
- Outcome
- corn injurye5
- Direction
- lesse5
- Qualifier
- clomazonee5
- Comparator
- conventional-tillage treatmentse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“corn injury was greater with imazaquin and imazethapyr and less with clomazone in the reduced-tillage plots than in the conventional-tillage treatments”
The same questions in other papers
tillage · crop injury · Zea mays (maize)Positive and negative results
2 in the opposite direction
- no effect
- no effect
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.