Abstract
Experiments were conducted in 1985 to 1987 to evaluate the effects of conventional and no-tillage systems on the weed control provided by clomazone applied preemergence in soybeans. The persistence of clomazone in soil of the two tillage systems was also determined. Increasing the clomazone rate from 0.8 to 1.4 kg/ha did not increase weed control. Clomazone controlled 80% or more of jimsonweed, velvetleaf, and giant foxtail. Common cocklebur control ranged from about 50 to 70% in no-till and from 80 to 90% in conventional tillage. Generally, soybean pods/plant and yields were lower from clomazone treatments than from handweeded treatments due to inadequate common cocklebur control. Over 40% of the clomazone applied did not reach the soil surface; it was either intercepted by wheat straw, volatilized, or both. Clomazone persisted longer in conventional tillage than in no-tillage in. However, in 1986, clomazone was equally persistent in the two tillage systems. The half-life of clomazone was 34 and 6 days in 1985 in conventional and no-tillage, respectively, and in 1986, 18 and 16 days in conventional and no-tillage, respectively. Significant clomazone concentrations were not found below 10 cm in the soil profile. Corn planted without tillage (no-till) approximately 1 yr after clomazone application was not injured and yields were not reduced due to prior clomazone use.
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Claims 16
Claim · model-written summary
Increasing clomazone from 0.8 to 1.4 kg/ha did not improve weed control.
- Taxon
- Soybean
Glycine maxt0 - Treatment
- clomazone rate from 0.8 to 1.4 kg/hae0
- Interactor
- weede0weed
- Outcome
- weed controle0
- Direction
- did not increasee0
- Comparator
- 0.8e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the clomazone rate from 0.8 to 1.4 kg/ha did not increase weed control.”
t0“Soybean (Glycine max)”
Claim · model-written summary
Clomazone controlled at least 80% of jimsonweed.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Clomazonee0
- Interactor
- jimsonweed
.jpg?width=60)
Datura stramoniume0weed - Outcome
- jimsonweede0
- Direction
- controllede0
- Value
- 80% or moree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Clomazone controlled 80% or more of jimsonweed, velvetleaf, and giant foxtail.”
t0“Soybean (Glycine max)”
Claim · model-written summary
Clomazone controlled at least 80% of velvetleaf.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Clomazonee0
- Interactor
- velvetleaf
Abutilon theophrastie0weed - Outcome
- velvetleafe0
- Direction
- controllede0
- Value
- 80% or moree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Clomazone controlled 80% or more of jimsonweed, velvetleaf, and giant foxtail.”
t0“Soybean (Glycine max)”
Claim · model-written summary
Clomazone controlled at least 80% of giant foxtail.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Clomazonee0
- Interactor
- giant foxtaile0weed
- Outcome
- giant foxtaile0
- Direction
- controllede0
- Value
- 80% or moree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Clomazone controlled 80% or more of jimsonweed, velvetleaf, and giant foxtail.”
t0“Soybean (Glycine max)”
Claim · model-written summary
Common cocklebur control ranged about 50 to 70% under no-till.
- Taxon
- SoybeanGlycine maxt0
- Interactor
- Common cocklebure0weed
- Outcome
- Common cocklebur controle0
- Value
- 50 to 70%e0
- Setting
- no-tille0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Common cocklebur control ranged from about 50 to 70% in no-till”
t0“Soybean (Glycine max)”
Claim · model-written summary
Common cocklebur control ranged 80 to 90% under conventional tillage.
- Taxon
- SoybeanGlycine maxt0
- Interactor
- Common cocklebure0weed
- Outcome
- Common cocklebur controle0
- Value
- 80 to 90%e0
- Setting
- conventional tillagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Common cocklebur control ranged from about 50 to 70% in no-till and from 80 to 90% in conventional tillage.”
t0“Soybean (Glycine max)”
Claim · model-written summary
Soybean pods per plant were generally lower with clomazone than handweeding.
- Taxon
- soybeanGlycine maxe0
- Treatment
- clomazone treatmentse0
- Interactor
- common cocklebure0weed
- Outcome
- soybean pods/plante0
- Direction
- lowere0
- Comparator
- handweeded treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean pods/plant and yields were lower from clomazone treatments than from handweeded treatments due to inadequate common cocklebur control.”
Claim · model-written summary
Soybean yields were generally lower with clomazone than handweeding.
- Taxon
- soybeanGlycine maxe0
- Treatment
- clomazone treatmentse0
- Interactor
- common cocklebure0weed
- Outcome
- yieldse0
- Direction
- lowere0
- Comparator
- handweeded treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean pods/plant and yields were lower from clomazone treatments than from handweeded treatments due to inadequate common cocklebur control.”
Claim · model-written summary
Over 40% of applied clomazone failed to reach soil surface.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- clomazone applied did not reach the soil surfacee0
- Value
- Over 40%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Over 40% of the clomazone applied did not reach the soil surface”
t0“Soybean (Glycine max)”
Claim · model-written summary
Clomazone persisted longer with conventional tillage than no-tillage in general.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- conventional tillagee0
- Outcome
- Clomazone persistede0
- Direction
- longere0
- Comparator
- no-tillagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Clomazone persisted longer in conventional tillage than in no-tillage”
t0“Soybean (Glycine max)”
Claim · model-written summary
In 1986 clomazone persistence was equal between tillage systems.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- two tillage systemse0
- Outcome
- clomazone was equally persistente0
- Direction
- equallye0
- Qualifier
- 1986e0
- Comparator
- two tillage systemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in 1986, clomazone was equally persistent in the two tillage systems.”
t0“Soybean (Glycine max)”
Claim · model-written summary
The 1985 clomazone half-life was 34 days in conventional tillage.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- half-life of clomazonee0
- Value
- 34e0
- Qualifier
- 1985e0
- Setting
- conventionale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The half-life of clomazone was 34 and 6 days in 1985 in conventional and no-tillage, respectively”
t0“Soybean (Glycine max)”
Claim · model-written summary
The 1985 clomazone half-life was 6 days in no-tillage.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- half-life of clomazonee0
- Value
- 6 dayse0
- Qualifier
- 1985e0
- Setting
- no-tillagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The half-life of clomazone was 34 and 6 days in 1985 in conventional and no-tillage, respectively”
t0“Soybean (Glycine max)”
Claim · model-written summary
Significant clomazone concentrations were absent below 10 cm soil depth.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- clomazone concentrations were not founde0
- Value
- 10 cme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant clomazone concentrations were not found below 10 cm in the soil profile.”
t0“Soybean (Glycine max)”
Claim · model-written summary
Corn planted without tillage one year later had no injury from prior clomazone.
- Taxon
- Corn
Zea mays subsp. mayse0 - Treatment
- clomazone applicatione0
- Outcome
- Corn planted without tillage (no-till) approximately 1 yr after clomazone application was not injurede0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn planted without tillage (no-till) approximately 1 yr after clomazone application was not injured”
e1“prior clomazone use”
Claim · model-written summary
Corn yield was not reduced by prior clomazone use.
- Taxon
- CornZea mays subsp. mayse0
- Treatment
- prior clomazone usee0
- Outcome
- yieldse0
- Direction
- not reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn planted without tillage (no-till) approximately 1 yr after clomazone application was not injured and yields were not reduced due to prior clomazone use.”
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See all 11 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.