Abstract
Johnsongrass control systems that included commercially available corn herbicides applied to crop sequences of continuous corn or corn–cotton–corn rotation were evaluated over a 3-yr period at the Texas Agricultural Experiment Station in Burleson County. Herbicide treatments evaluated were EPTC + R-25788 applied preplant incorporated (PPI); metolachlor applied preemergence (PRE); nicosulfuron applied postemergence (POST); and the combination of metolachlor PRE and glyphosate POST applied after corn harvest. Weed control practices applied to plots planted to cotton in the second growing season provided excellent johnsongrass control (≈ 95%). Visual control ratings indicated that nicosulfuron provided the best johnsongrass control (> 80%) among the herbicides evaluated all three years. Metolachlor and glyphosate combinations provided acceptable johnsongrass control the third year of the experiment in both cropping sequences. Corn grain yield and johnsongrass control were best in cotton-rotated plots. The highest returns observed in continuous corn were from either nicosulfuron or the combination of metolachlor and glyphosate. Net returns for all control systems in corn–cotton–corn rotated plots were greater than the weedy check and were equivalent to the lead systems in continuous corn.
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Claims 7
Claim · model-written summary
Nicosulfuron gave the best johnsongrass control, above 80%, among the herbicides evaluated in all three years.
- Treatment
- nicosulfurone1
- Interactor
- Sorghum halepense
.jpg?width=60)
Sorghum halepenset1weed - Outcome
- johnsongrass controle1
- Direction
- beste1
- Value
- > 80%e1
- Comparator
- the herbicides evaluatede1
- Setting
- Burleson Countye0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“Field Corn (Zea mays)”
t1“Johnsongrass (Sorghum halepense)”
e0“over a 3-yr period at the Texas Agricultural Experiment Station in Burleson County”
e1“Visual control ratings indicated that nicosulfuron provided the best johnsongrass control (> 80%) among the herbicides evaluated all three years”
Claim · model-written summary
Metolachlor and glyphosate combinations gave acceptable johnsongrass control in the third year.
- Treatment
- Metolachlor and glyphosate combinationse1
- Interactor
- Sorghum halepenseSorghum halepenset1weed
- Outcome
- johnsongrass controle1
- Direction
- provided acceptablee1
- Qualifier
- the third year of the experimente1
- Setting
- Burleson Countye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Field Corn (Zea mays)”
t1“Johnsongrass (Sorghum halepense)”
e0“over a 3-yr period at the Texas Agricultural Experiment Station in Burleson County”
e1“Metolachlor and glyphosate combinations provided acceptable johnsongrass control the third year of the experiment in both cropping sequences”
Claim · model-written summary
Corn grain yield and johnsongrass control were best in cotton-rotated plots.
- Treatment
- cotton-rotated plotse1
- Interactor
- Sorghum halepenseSorghum halepenset1weed
- Outcome
- Corn grain yield and johnsongrass controle1
- Direction
- were beste1
- Setting
- Burleson Countye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Field Corn (Zea mays)”
t1“Johnsongrass (Sorghum halepense)”
e0“over a 3-yr period at the Texas Agricultural Experiment Station in Burleson County”
e1“Corn grain yield and johnsongrass control were best in cotton-rotated plots”
Claim · model-written summary
The highest returns in continuous corn came from nicosulfuron or from metolachlor and glyphosate.
- Treatment
- nicosulfuron or the combination of metolachlor and glyphosatee1
- Outcome
- returnse1
- Direction
- higheste1
- Qualifier
- in continuous corne1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Field Corn (Zea mays)”
e1“The highest returns observed in continuous corn were from either nicosulfuron or the combination of metolachlor and glyphosate”
Claim · model-written summary
Net returns for all control systems in corn-cotton-corn rotation were greater than the weedy check.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Field Corn (Zea mays)”
e1“Net returns for all control systems in corn–cotton–corn rotated plots were greater than the weedy check and were equivalent to the lead systems in continuous corn”
Claim · model-written summary
Net returns for all control systems in corn-cotton-corn rotation were equivalent to the lead systems in continuous corn.
- Treatment
- all control systemse1
- Outcome
- Net returnse1
- Direction
- equivalente1
- Comparator
- the lead systems in continuous corne1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Field Corn (Zea mays)”
e1“Net returns for all control systems in corn–cotton–corn rotated plots were greater than the weedy check and were equivalent to the lead systems in continuous corn”
Claim · model-written summary
Weed control practices on cotton plots in the second growing season gave excellent johnsongrass control, about 95%.
- Treatment
- Weed control practices applied to plots planted to cotton in the second growing seasone1
- Interactor
- Sorghum halepenseSorghum halepenset1weed
- Outcome
- johnsongrass controle1
- Direction
- provided excellente1
- Value
- ≈ 95%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Field Corn (Zea mays)”
t1“Johnsongrass (Sorghum halepense)”
e1“Weed control practices applied to plots planted to cotton in the second growing season provided excellent johnsongrass control (≈ 95%)”
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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.