Abstract
An experiment was initiated at two sites in 1998 near Crowder, MS, to evaluate the effect of in-season applications of glyphosate on redvine populations in glyphosate-resistant soybean. In the year of application, most treatments containing multiple in-season applications of glyphosate reduced redvine populations. However, at 16 mo after treatment (October 1999), 0.63 kg ai/ha paraquat preplant followed by sequential postemergence applications of glyphosate at 1.1 and 2.2 kg ai/ ha reduced redvine stems by 45% compared with the untreated check. Redvine control with this treatment also was comparable with 2.2 kg ai/ha dicamba preharvest. The same results were observed at 12 and 14 mo after application with many treatments containing sequential applications of glyphosate, but glyphosate at 1.1 and 2.2 kg ai/ha was the only in-season treatment to maintain redvine suppression during the entire growing season the year after herbicide application. However, a number of treatments delayed redvine reinfestation; thus, soybean yield was improved over the untreated check with all treatments from the previous year containing in-season applications of glyphosate, except for 0.84 kg/ha followed by 0.56 kg/ha. Increasing rates of in-season glyphosate applications to 1.1 followed by 2.2 kg/ha will adequately suppress redvine populations in glyphosate-resistant soybean, controlling annual weeds in the process.
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Claims 8
Claim · model-written summary
Most multiple in-season glyphosate treatments reduced redvine populations in the application year.
- Taxon
- glyphosate-resistant soybeant0
- Treatment
- multiple in-season applications of glyphosatee0
- Interactor
- redvinee0weed
- Outcome
- redvine populationse0
- Direction
- reducede0
- Setting
- near Crowder, MSe1
Not reportedComparator
Verbatim
e0“In the year of application, most treatments containing multiple in-season applications of glyphosate reduced redvine populations”
t0“In-Season Applications of Glyphosate for Control of Redvine (Brunnichia ovata) in Glyphosate-Resistant Soybean”
e1“near Crowder, MS”
Claim · model-written summary
Paraquat preplant followed by sequential glyphosate reduced redvine stems by 45% against untreated soybean at 16 months.
Verbatim
e0“at 16 mo after treatment (October 1999), 0.63 kg ai/ha paraquat preplant followed by sequential postemergence applications of glyphosate at 1.1 and 2.2 kg ai/ ha reduced redvine stems by 45% compared with the untreated check”
t0“In-Season Applications of Glyphosate for Control of Redvine (Brunnichia ovata) in Glyphosate-Resistant Soybean”
Claim · model-written summary
Redvine control by the sequential glyphosate regimen was comparable to preharvest dicamba.
Verbatim
e0“Redvine control with this treatment also was comparable with 2.2 kg ai/ha dicamba preharvest”
t0“In-Season Applications of Glyphosate for Control of Redvine (Brunnichia ovata) in Glyphosate-Resistant Soybean”
Claim · model-written summary
Sequential glyphosate treatments had similar redvine suppression at 12 and 14 months.
- Taxon
- glyphosate-resistant soybeant0
- Treatment
- sequential applications of glyphosatee0
- Outcome
- same resultse0
- Qualifier
- 12 and 14 mo after applicatione0
Not reportedComparatorDirection
Verbatim
e0“The same results were observed at 12 and 14 mo after application with many treatments containing sequential applications of glyphosate”
t0“In-Season Applications of Glyphosate for Control of Redvine (Brunnichia ovata) in Glyphosate-Resistant Soybean”
Claim · model-written summary
Glyphosate at 1.1 then 2.2 kg ai/ha alone maintained redvine suppression across the following growing season.
- Taxon
- glyphosate-resistant soybeant0
- Treatment
- glyphosate at 1.1 and 2.2 kg ai/hae0
- Interactor
- redvinee0weed
- Outcome
- redvine suppressione0
Not reportedComparatorDirection
Verbatim
e0“glyphosate at 1.1 and 2.2 kg ai/ha was the only in-season treatment to maintain redvine suppression during the entire growing season the year after herbicide application”
t0“In-Season Applications of Glyphosate for Control of Redvine (Brunnichia ovata) in Glyphosate-Resistant Soybean”
Claim · model-written summary
Several treatments delayed redvine reinfestation.
- Taxon
- glyphosate-resistant soybeant0
- Treatment
- a number of treatmentse0
- Interactor
- redvinee0weed
- Outcome
- redvine reinfestatione0
- Direction
- delayede0
Not reportedComparator
Verbatim
e0“a number of treatments delayed redvine reinfestation”
t0“In-Season Applications of Glyphosate for Control of Redvine (Brunnichia ovata) in Glyphosate-Resistant Soybean”
Claim · model-written summary
Previous-year in-season glyphosate treatments improved soybean yield except the 0.84 then 0.56 kg/ha sequence.
- Taxon
- soybean
Glycine maxe0 - Treatment
- in-season applications of glyphosatee0
- Outcome
- soybean yielde0
- Direction
- improvede0
- Qualifier
- except for 0.84 kg/ha followed by 0.56 kg/hae0
- Comparator
- untreated checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean yield was improved over the untreated check with all treatments from the previous year containing in-season applications of glyphosate, except for 0.84 kg/ha followed by 0.56 kg/ha”
Claim · model-written summary
Increasing sequential glyphosate rates to 1.1 and 2.2 kg/ha is recommended to suppress redvine and control annual weeds.
Verbatim
e0“Increasing rates of in-season glyphosate applications to 1.1 followed by 2.2 kg/ha will adequately suppress redvine populations in glyphosate-resistant soybean, controlling annual weeds in the process”
The same questions in other papers
glyphosate · yield · Glycine max (soybean)Results differ
54 papers in the same direction as this paper · 57 in the opposite direction · 11 reporting no difference from an alternative
- negative
- positive
- positive
119 papers more in this group
See all 123 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.