Abstract
In 1985, 1986, and 1987, pendimethalin at 1.7 kg ai/ha plus 2.2 kg ai/ha cyanazine, 2.2 kg ai/ha atrazine, or 1.1 kg/ha atrazine plus 1.1 kg/ha cyanazine was applied delayed preemergence, early postemergence, and postemergence with and without cultivation to evaluate woolly cupgrass control and corn injury. Results varied from year to year. Dry conditions in 1985 resulted in poorer woolly cupgrass control while cold and wet environments in 1987 resulted in corn injury and reduced yields from postemergence treatments containing cyanazine. Good early-season suppression of woolly cupgrass deteriorated to less than 75% control by the late-season evaluation in all experiments. The best woolly cupgrass control and highest corn yields were usually achieved when herbicide applications were followed by row cultivation. Corn yield increases averaged 28, 17, and 11% in 1985, 1986, and 1987, respectively, when a herbicide treatment was followed by row cultivation. Pendimethalin/triazine treatments followed with a row cultivation adequately suppressed woolly cupgrass in field corn, but adverse environmental conditions often reduced herbicide effectiveness or increased corn injury.
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Claims 12
Claim · model-written summary
Dry conditions in 1985 gave poorer woolly cupgrass control.
- Taxon
- Corn
Zea mays subsp. mayst0 - Treatment
- Dry conditions in 1985e1
- Interactor
- woolly cupgrasse1weed
- Outcome
- woolly cupgrass controle1
- Direction
- poorere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Dry conditions in 1985 resulted in poorer woolly cupgrass control while cold and wet environments in 1987 resulted in corn injury and reduced yields from postemergence treatments containing cyanazine”
t0“Control in Corn”
Claim · model-written summary
Cold and wet environments in 1987 increased corn injury from postemergence treatments containing cyanazine.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- cold and wet environments in 1987e1
- Outcome
- corn injurye1
- Direction
- increaseinferrede1
- Qualifier
- postemergence treatments containing cyanazinee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Dry conditions in 1985 resulted in poorer woolly cupgrass control while cold and wet environments in 1987 resulted in corn injury and reduced yields from postemergence treatments containing cyanazine”
t0“Control in Corn”
Claim · model-written summary
Cold and wet environments in 1987 reduced corn yields from postemergence treatments containing cyanazine.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- cold and wet environments in 1987e1
- Outcome
- yieldse1
- Direction
- reducede1
- Qualifier
- postemergence treatments containing cyanazinee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Dry conditions in 1985 resulted in poorer woolly cupgrass control while cold and wet environments in 1987 resulted in corn injury and reduced yields from postemergence treatments containing cyanazine”
t0“Control in Corn”
Claim · model-written summary
Early-season woolly cupgrass suppression deteriorated to less than 75% control by late season in all experiments.
- Taxon
- CornZea mays subsp. mayst0
- Outcome
- suppression of woolly cupgrasse2
- Direction
- deterioratede2
- Value
- less than 75% controle2
- Qualifier
- by the late-season evaluatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Good early-season suppression of woolly cupgrass deteriorated to less than 75% control by the late-season evaluation in all experiments”
t0“Control in Corn”
Claim · model-written summary
Herbicide applications followed by row cultivation gave the best woolly cupgrass control in corn.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- herbicide applications were followed by row cultivatione3
- Interactor
- woolly cupgrasse3weed
- Outcome
- woolly cupgrass controle3
- Direction
- beste3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The best woolly cupgrass control and highest corn yields were usually achieved when herbicide applications were followed by row cultivation”
t0“Control in Corn”
Claim · model-written summary
Herbicide applications followed by row cultivation gave the highest corn yields.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- herbicide applications were followed by row cultivatione3
- Outcome
- corn yieldse3
- Direction
- higheste3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The best woolly cupgrass control and highest corn yields were usually achieved when herbicide applications were followed by row cultivation”
t0“Control in Corn”
Claim · model-written summary
Corn yield increased 28% in 1985 when a herbicide treatment was followed by row cultivation.
- Taxon
- CornZea mays subsp. mayse4
- Treatment
- herbicide treatment was followed by row cultivatione4
- Outcome
- Corn yield increasese4
- Direction
- increasese4
- Value
- 28e4
- Qualifier
- in 1985e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Corn yield increases averaged 28, 17, and 11% in 1985, 1986, and 1987, respectively, when a herbicide treatment was followed by row cultivation”
Claim · model-written summary
Corn yield increased 17% in 1986 when a herbicide treatment was followed by row cultivation.
- Taxon
- CornZea mays subsp. mayse4
- Treatment
- herbicide treatment was followed by row cultivatione4
- Outcome
- Corn yield increasese4
- Direction
- increasese4
- Value
- 17e4
- Qualifier
- 1986e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Corn yield increases averaged 28, 17, and 11% in 1985, 1986, and 1987, respectively, when a herbicide treatment was followed by row cultivation”
Claim · model-written summary
Corn yield increased 11% in 1987 when a herbicide treatment was followed by row cultivation.
- Taxon
- CornZea mays subsp. mayse4
- Treatment
- herbicide treatment was followed by row cultivatione4
- Outcome
- Corn yield increasese4
- Direction
- increasese4
- Value
- 11%e4
- Qualifier
- 1987e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Corn yield increases averaged 28, 17, and 11% in 1985, 1986, and 1987, respectively, when a herbicide treatment was followed by row cultivation”
Claim · model-written summary
Pendimethalin/triazine treatments followed by row cultivation adequately suppressed woolly cupgrass in field corn.
- Taxon
- cornZea mays subsp. mayse5
- Treatment
- Pendimethalin/triazine treatments followed with a row cultivatione5
- Interactor
- woolly cupgrasse5weed
- Outcome
- woolly cupgrasse5
- Direction
- adequately suppressede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Pendimethalin/triazine treatments followed with a row cultivation adequately suppressed woolly cupgrass in field corn, but adverse environmental conditions often reduced herbicide effectiveness or increased corn injury”
Claim · model-written summary
Adverse environmental conditions reduced herbicide effectiveness.
- Taxon
- cornZea mays subsp. mayse5
- Treatment
- adverse environmental conditionse5
- Outcome
- herbicide effectivenesse5
- Direction
- reducede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Pendimethalin/triazine treatments followed with a row cultivation adequately suppressed woolly cupgrass in field corn, but adverse environmental conditions often reduced herbicide effectiveness or increased corn injury”
Claim · model-written summary
Adverse environmental conditions increased corn injury.
- Taxon
- cornZea mays subsp. mayse5
- Treatment
- adverse environmental conditionse5
- Outcome
- corn injurye5
- Direction
- increasede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Pendimethalin/triazine treatments followed with a row cultivation adequately suppressed woolly cupgrass in field corn, but adverse environmental conditions often reduced herbicide effectiveness or increased corn injury”
The same questions in other papers
herbicide · control · Zea mays (maize)Positive and negative results
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499 papers in the same direction as this paper · 127 in the opposite direction · 24 reporting no difference from an alternative
- no effect
- negative
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See all 651 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.