Abstract
Field studies were conducted in 1999, 2000, and 2001 to investigate weed control and crop safety with preemergence (PRE) and postemergence (POST) applications of mesotrione alone and in tank mixtures with acetochlor and atrazine. Corn injury was less than 4% with all mesotrione treatments in 1999 and 2001, but it was 8 to 20% in 2000, when rainfall was 3.1 cm 7 d after PRE applications. Mesotrione PRE at 0.16 and 0.24 kg ai/ha did not adequately control most broadleaf weeds or giant foxtail. Tank mixtures of mesotrione plus acetochlor controlled smooth pigweed and giant foxtail but did not adequately control common ragweed, common lambsquarters, or morningglory species. Control by tank mixtures of mesotrione plus atrazine at 0.56 kg ai/ha was frequently low and varied with rainfall after PRE applications. All weed species were controlled 80% or more by mesotrione plus acetochlor PRE or atrazine plus acetochlor PRE followed by mesotrione POST at 0.11 kg/ha.Nomenclature: Acetochlor; atrazine; mesotrione; common lambsquarters, Chenopodium album L. #3 CHEAL; common ragweed, Ambrosia artemisiifolia L. # AMBEL; giant foxtail, Setaria faberi Herrm. # SETFA; morningglory species, Ipomoea spp. # IPOSS; smooth pigweed, Amaranthus hybridus L. # AMACH; corn, Zea mays L.Additional index words: HPPD-inhibiting herbicides, triketone herbicides.Abbreviations: COC, crop oil concentrate; DAT, days after treatment; fb, followed by; POST, postemergence; PRE, preemergence; UAN, urea ammonium nitrate; WAT, weeks after treatment.
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Claims 11
Claim · model-written summary
Corn injury was below 4% with mesotrione treatments in 1999 and 2001.
- Taxon
- Corn
Zea mays subsp. mayse0 - Treatment
- mesotrione treatmentse0
- Outcome
- Corn injurye0
- Direction
- less thane0
- Value
- 4%e0
- Qualifier
- in 1999 and 2001e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn injury was less than 4% with all mesotrione treatments in 1999 and 2001”
Claim · model-written summary
Corn injury was 8 to 20% in 2000 after rainfall following PRE application.
- Taxon
- CornZea mays subsp. mayse1
- Treatment
- mesotrione treatmentse2
- Outcome
- Corn injurye1
- Value
- 8 to 20%e0
- Qualifier
- rainfall was 3.1 cm 7 d after PRE applicationse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but it was 8 to 20% in 2000, when rainfall was 3.1 cm 7 d after PRE applications.”
e1“Corn injury”
e2“mesotrione treatments”
Claim · model-written summary
Preemergence mesotrione alone did not adequately control most broadleaf weeds or giant foxtail.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Mesotrione PRE at 0.16 and 0.24 kg ai/hae0
- Interactor
- giant foxtaile0weed
- Outcome
- control most broadleaf weeds or giant foxtaile0
- Direction
- did not adequately controle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mesotrione PRE at 0.16 and 0.24 kg ai/ha did not adequately control most broadleaf weeds or giant foxtail.”
t0“Corn (Zea mays)”
Claim · model-written summary
Mesotrione plus acetochlor controlled smooth pigweed.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Tank mixtures of mesotrione plus acetochlore0
- Interactor
- smooth pigweed
Amaranthus hybriduse0weed - Outcome
- controlled smooth pigweede0
- Direction
- controllede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tank mixtures of mesotrione plus acetochlor controlled smooth pigweed and giant foxtail”
t0“Corn”
Claim · model-written summary
Mesotrione plus acetochlor controlled giant foxtail.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Tank mixtures of mesotrione plus acetochlore0
- Interactor
- giant foxtaile0weed
- Outcome
- controlled smooth pigweed and giant foxtaile0
- Direction
- controllede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tank mixtures of mesotrione plus acetochlor controlled smooth pigweed and giant foxtail”
t0“Corn”
Claim · model-written summary
Mesotrione plus acetochlor did not adequately control common ragweed.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Tank mixtures of mesotrione plus acetochlore0
- Interactor
- common ragweed
Ambrosia artemisiifoliae0weed - Outcome
- control common ragweede0
- Direction
- did not adequately controle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tank mixtures of mesotrione plus acetochlor controlled smooth pigweed and giant foxtail but did not adequately control common ragweed, common lambsquarters, or morningglory species.”
t0“Corn”
Claim · model-written summary
Mesotrione plus acetochlor did not adequately control common lambsquarters.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Tank mixtures of mesotrione plus acetochlore0
- Interactor
- common lambsquarters
Chenopodium albume0weed - Outcome
- control common ragweed, common lambsquarterse0
- Direction
- did not adequately controle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tank mixtures of mesotrione plus acetochlor controlled smooth pigweed and giant foxtail but did not adequately control common ragweed, common lambsquarters, or morningglory species.”
t0“Corn”
Claim · model-written summary
Mesotrione plus acetochlor did not adequately control morningglory species.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Tank mixtures of mesotrione plus acetochlore0
- Interactor
- morningglory speciese0weed
- Outcome
- control common ragweed, common lambsquarters, or morningglory speciese0
- Direction
- did not adequately controle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tank mixtures of mesotrione plus acetochlor controlled smooth pigweed and giant foxtail but did not adequately control common ragweed, common lambsquarters, or morningglory species.”
t0“Corn”
Claim · model-written summary
Preemergence mesotrione plus atrazine often gave low weed control that varied with rainfall.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- tank mixtures of mesotrione plus atrazine at 0.56 kg ai/hae0
- Outcome
- Controle0
- Direction
- lowe0
- Qualifier
- varied with rainfall after PRE applicationse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Control by tank mixtures of mesotrione plus atrazine at 0.56 kg ai/ha was frequently low and varied with rainfall after PRE applications.”
t0“Corn”
Claim · model-written summary
All weed species were controlled at least 80% by mesotrione plus acetochlor PRE followed by mesotrione POST.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- mesotrione plus acetochlor PREe0
- Outcome
- All weed species were controllede0
- Direction
- controllede0
- Value
- 80% or moree0
- Qualifier
- followed by mesotrione POST at 0.11 kg/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All weed species were controlled 80% or more by mesotrione plus acetochlor PRE or atrazine plus acetochlor PRE followed by mesotrione POST at 0.11 kg/ha.”
t0“Corn”
Claim · model-written summary
All weed species were controlled at least 80% by atrazine plus acetochlor PRE followed by mesotrione POST.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- atrazine plus acetochlor PREe0
- Outcome
- All weed species were controllede0
- Direction
- controllede0
- Value
- 80% or moree0
- Qualifier
- followed by mesotrione POST at 0.11 kg/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All weed species were controlled 80% or more by mesotrione plus acetochlor PRE or atrazine plus acetochlor PRE followed by mesotrione POST at 0.11 kg/ha.”
t0“Corn”
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See all 16 papers →8 of 13 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.