Abstract
Field studies were conducted in 1991 to 1993 to determine the effects of PRE and POST herbicides alone and in factorial combinations on sicklepod control, weed biomass, and soybean seed yields. Herbicides evaluated were metribuzin PRE, metribuzin + chlorimuron PRE, imazaquin PRE and POST, chlorimuron POST, and AC 263,222 POST POST herbicides alone provided better sicklepod control than PRE herbicides alone. However, sequential (SEQ) treatments [PRE followed by (fb) POST] provided better sicklepod control than single herbicide treatments. Metribuzin and metribuzin + chlorimuron alone or used in a SEQ program provided similar PRE control of sicklepod, and both controlled sicklepod better than imazaquin in 1991 and 1992. Chlorimuron alone or in a SEQ program provided better POST control than AC 263,222 or imazaquin alone when soil moisture levels at planting favored weed seed germination. When soil moisture levels at planting were unfavorable for weed seed germination, the residual activity of imazaquin provided the best season-long control. SEQ herbicide applications allowed soybean to attain higher seed yields than single (PRE or POST) herbicide treatments all 3 yr. However, only metribuzin fb chlorimuron in 1991 and 1992 and imazaquin fb imazaquin and imazaquin fb chlorimuron in 1993 allowed soybean to achieve seed yields similar to weed-free soybean. Soybean seed yields were greater with POST than with PRE herbicides 2 of 3 yr, but no single herbicide treatment provided soybean seed yields similar to weed-free soybean.
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Claims 12
Claim · model-written summary
Postemergence herbicides alone controlled sicklepod better than preemergence herbicides alone.
- Taxon
- Soybean
Glycine maxt0 - Treatment
- POST herbicides alonee0
- Interactor
- Sicklepodt0weed
- Outcome
- sicklepod controle0
- Direction
- bettere0
- Comparator
- PRE herbicides alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“POST herbicides alone provided better sicklepod control than PRE herbicides alone”
t0“Sicklepod (Senna obtusifolia) Control in Soybean (Glycine max)”
Claim · model-written summary
Sequential preemergence then postemergence herbicides controlled sicklepod better than single applications.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- sequential (SEQ) treatments [PRE followed by (fb) POST]e0
- Interactor
- Sicklepodt0weed
- Outcome
- sicklepod controle0
- Direction
- bettere0
- Comparator
- single herbicide treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sequential (SEQ) treatments [PRE followed by (fb) POST] provided better sicklepod control than single herbicide treatments”
t0“Sicklepod (Senna obtusifolia) Control in Soybean (Glycine max)”
Claim · model-written summary
Metribuzin alone or sequentially controlled sicklepod similarly and better than imazaquin in 1991 and 1992.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Metribuzine0
- Interactor
- Sicklepodt0weed
- Outcome
- control of sicklepode0
- Direction
- bettere0
- Comparator
- imazaquine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Metribuzin and metribuzin + chlorimuron alone or used in a SEQ program provided similar PRE control of sicklepod, and both controlled sicklepod better than imazaquin in 1991 and 1992”
t0“Sicklepod (Senna obtusifolia) Control in Soybean (Glycine max)”
Claim · model-written summary
Metribuzin plus chlorimuron alone or sequentially controlled sicklepod better than imazaquin in 1991 and 1992.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- metribuzin + chlorimurone0
- Interactor
- Sicklepodt0weed
- Outcome
- control of sicklepode0
- Direction
- bettere0
- Comparator
- imazaquine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“metribuzin + chlorimuron alone or used in a SEQ program provided similar PRE control of sicklepod, and both controlled sicklepod better than imazaquin in 1991 and 1992”
t0“Sicklepod (Senna obtusifolia) Control in Soybean (Glycine max)”
Claim · model-written summary
Chlorimuron gave better postemergence control than AC 263,222 or imazaquin when planting moisture favored germination.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Chlorimurone0
- Interactor
- Sicklepodt0weed
- Outcome
- POST controle0
- Direction
- bettere0
- Qualifier
- soil moisture levels at planting favored weed seed germinatione0
- Comparator
- AC 263,222 or imazaquine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorimuron alone or in a SEQ program provided better POST control than AC 263,222 or imazaquin alone when soil moisture levels at planting favored weed seed germination”
t0“Sicklepod (Senna obtusifolia) Control in Soybean (Glycine max)”
Claim · model-written summary
Imazaquin gave the best season-long control when planting soil moisture did not favor weed germination.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- imazaquine0
- Interactor
- Sicklepodt0weed
- Outcome
- season-long controle0
- Direction
- beste0
- Qualifier
- soil moisture levels at planting were unfavorable for weed seed germinatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When soil moisture levels at planting were unfavorable for weed seed germination, the residual activity of imazaquin provided the best season-long control”
t0“Sicklepod (Senna obtusifolia) Control in Soybean (Glycine max)”
Claim · model-written summary
Sequential herbicides yielded more soybean seed than single applications in all three years.
- Taxon
- soybeanGlycine maxe0
- Treatment
- SEQ herbicide applicationse0
- Outcome
- seed yieldse0
- Direction
- highere0
- Comparator
- single (PRE or POST) herbicide treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SEQ herbicide applications allowed soybean to attain higher seed yields than single (PRE or POST) herbicide treatments all 3 yr”
Claim · model-written summary
Metribuzin followed by chlorimuron yielded similarly to weed-free soybean in 1991 and 1992.
- Taxon
- soybeanGlycine maxe0
- Treatment
- metribuzin fb chlorimurone0
- Outcome
- seed yieldse0
- Direction
- similare0
- Comparator
- weed-free soybeane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“metribuzin fb chlorimuron in 1991 and 1992 and imazaquin fb imazaquin and imazaquin fb chlorimuron in 1993 allowed soybean to achieve seed yields similar to weed-free soybean”
Claim · model-written summary
Imazaquin followed by imazaquin yielded similarly to weed-free soybean in 1993.
- Taxon
- soybeanGlycine maxe0
- Treatment
- imazaquin fb imazaquine0
- Outcome
- seed yieldse0
- Direction
- similare0
- Comparator
- weed-free soybeane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“imazaquin fb imazaquin and imazaquin fb chlorimuron in 1993 allowed soybean to achieve seed yields similar to weed-free soybean”
Claim · model-written summary
Imazaquin followed by chlorimuron yielded similarly to weed-free soybean in 1993.
- Taxon
- soybeanGlycine maxe0
- Treatment
- imazaquin fb chlorimurone0
- Outcome
- seed yieldse0
- Direction
- similare0
- Comparator
- weed-free soybeane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“imazaquin fb chlorimuron in 1993 allowed soybean to achieve seed yields similar to weed-free soybean”
Claim · model-written summary
Postemergence herbicides gave higher soybean seed yields than preemergence herbicides in two of three years.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- POSTe0
- Outcome
- seed yieldse0
- Direction
- greatere0
- Comparator
- PRE herbicidese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean seed yields were greater with POST than with PRE herbicides 2 of 3 yr”
Claim · model-written summary
No single herbicide treatment yielded similarly to weed-free soybean.
- Taxon
- soybeanGlycine maxe0
- Treatment
- single herbicide treatmente0
- Outcome
- seed yieldse0
- Direction
- similare0
- Comparator
- weed-free soybeane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no single herbicide treatment provided soybean seed yields similar to weed-free soybean”
The same questions in other papers
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- positive
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See all 460 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.