Abstract
Field studies were conducted at two locations in 1997 and 1998 to evaluate crop injury, weed control, yield, and net economic returns of single and sequential postemergence applications of labeled and reduced rates of glyphosate to no-till, glyphosate-resistant soybean planted in narrow rows. Sequential applications provided at least 91% control of giant foxtail, while single applications provided at least 86% control with labeled rates and 68–93% control with reduced rates. Common waterhemp control was slightly higher with sequential vs. single treatments and with labeled rates vs. reduced rates. Velvetleaf control was greater than 96% with all treatments. Common cocklebur control was 90% or higher with all treatments except a single application of glyphosate at 210 g/ha. Lower control of giant foxtail and common waterhemp with single-application, reduced-rate treatments in two of the four trials resulted in lower yields. Overall, sequential applications, regardless of rate, provided greater weed control, yield, and net income and lower coefficients of variation (C.V.s) of net income than reduced-rate single applications. Single-application treatments showed a trend of decreased weed control, yield, and net income and higher C.V.s of net income with reduced rates of glyphosate.
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Claims 14
Claim · model-written summary
Sequential glyphosate applications gave at least 91% control of giant foxtail in soybean.
- Taxon
- soybean
Glycine maxe3 - Treatment
- sequential postemergence applications of labeled and reduced rates of glyphosatee0
- Interactor
- giant foxtaile1weed
- Outcome
- control of giant foxtaile1
- Direction
- higherinferrede1
- Value
- at least 91%e1
- Comparator
- single applicationse2
- Setting
- two locations in 1997 and 1998e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“single and sequential postemergence applications of labeled and reduced rates of glyphosate”
e1“Sequential applications provided at least 91% control of giant foxtail”
e2“while single applications provided at least 86% control with labeled rates and 68–93% control with reduced rates”
e3“glyphosate-resistant soybean planted in narrow rows”
e4“Field studies were conducted at two locations in 1997 and 1998”
Claim · model-written summary
Single glyphosate applications at labeled rates gave at least 86% giant foxtail control, higher than reduced rates.
- Taxon
- soybeanGlycine maxe2
- Treatment
- single applicationse1
- Interactor
- giant foxtaile0weed
- Outcome
- controle1
- Direction
- higherinferrede1
- Value
- at least 86%e1
- Qualifier
- with labeled ratese1
- Comparator
- reduced ratese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sequential applications provided at least 91% control of giant foxtail”
e1“while single applications provided at least 86% control with labeled rates and 68–93% control with reduced rates”
e2“glyphosate-resistant soybean planted in narrow rows”
Claim · model-written summary
Single glyphosate applications at reduced rates gave 68–93% giant foxtail control, lower than labeled rates.
- Taxon
- soybeanGlycine maxe2
- Treatment
- single applicationse1
- Interactor
- giant foxtaile0weed
- Outcome
- controle1
- Direction
- lowerinferrede1
- Value
- 68–93%e1
- Qualifier
- with reduced ratese1
- Comparator
- labeled ratese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sequential applications provided at least 91% control of giant foxtail”
e1“while single applications provided at least 86% control with labeled rates and 68–93% control with reduced rates”
e2“glyphosate-resistant soybean planted in narrow rows”
Claim · model-written summary
Sequential applications gave slightly higher common waterhemp control than single treatments.
- Taxon
- soybeanGlycine maxe1
- Treatment
- sequential vs. single treatmentse0
- Interactor
- Common waterhempe0weed
- Outcome
- Common waterhemp controle0
- Direction
- highere0
- Comparator
- single treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Common waterhemp control was slightly higher with sequential vs. single treatments and with labeled rates vs. reduced rates”
e1“glyphosate-resistant soybean planted in narrow rows”
Claim · model-written summary
Labeled glyphosate rates gave slightly higher common waterhemp control than reduced rates.
- Taxon
- soybeanGlycine maxe1
- Treatment
- labeled ratese0
- Interactor
- Common waterhempe0weed
- Outcome
- Common waterhemp controle0
- Direction
- highere0
- Comparator
- reduced ratese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Common waterhemp control was slightly higher with sequential vs. single treatments and with labeled rates vs. reduced rates”
e1“glyphosate-resistant soybean planted in narrow rows”
Claim · model-written summary
Velvetleaf control was greater than 96% across all treatments in soybean.
- Taxon
- soybeanGlycine maxe1
- Interactor
- Velvetleaf
Abutilon theophrastie0weed - Outcome
- Velvetleaf controle0
- Value
- greater than 96%e0
- Qualifier
- with all treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Velvetleaf control was greater than 96% with all treatments”
e1“glyphosate-resistant soybean planted in narrow rows”
Claim · model-written summary
Common cocklebur control was 90% or higher across treatments, except a single application at 210 g/ha.
- Taxon
- soybeanGlycine maxe1
- Interactor
- Common cocklebure0weed
- Outcome
- Common cocklebur controle0
- Value
- 90% or highere0
- Qualifier
- except a single application of glyphosate at 210 g/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Common cocklebur control was 90% or higher with all treatments except a single application of glyphosate at 210 g/ha”
e1“glyphosate-resistant soybean planted in narrow rows”
Claim · model-written summary
Single reduced-rate glyphosate treatments resulted in lower soybean yields in two of four trials.
- Taxon
- soybeanGlycine maxe1
- Treatment
- single-application, reduced-rate treatmentse0
- Outcome
- yieldse0
- Direction
- lowere0
- Qualifier
- in two of the four trialse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lower control of giant foxtail and common waterhemp with single-application, reduced-rate treatments in two of the four trials resulted in lower yields”
e1“glyphosate-resistant soybean planted in narrow rows”
Claim · model-written summary
Single reduced-rate treatments gave lower giant foxtail control in two of four trials.
- Taxon
- soybeanGlycine maxe1
- Treatment
- single-application, reduced-rate treatmentse0
- Interactor
- giant foxtaile0weed
- Outcome
- control of giant foxtaile0
- Direction
- Lowere0
- Qualifier
- in two of the four trialse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lower control of giant foxtail and common waterhemp with single-application, reduced-rate treatments in two of the four trials resulted in lower yields”
e1“glyphosate-resistant soybean planted in narrow rows”
Claim · model-written summary
Single reduced-rate treatments gave lower common waterhemp control in two of four trials.
- Taxon
- soybeanGlycine maxe1
- Treatment
- single-application, reduced-rate treatmentse0
- Interactor
- common waterhempe0weed
- Outcome
- controle0
- Direction
- Lowere0
- Qualifier
- in two of the four trialse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lower control of giant foxtail and common waterhemp with single-application, reduced-rate treatments in two of the four trials resulted in lower yields”
e1“glyphosate-resistant soybean planted in narrow rows”
Claim · model-written summary
Sequential applications gave greater weed control, yield and net income than reduced-rate single applications, regardless of rate.
- Taxon
- soybeanGlycine maxe1
- Treatment
- sequential applicationse0
- Outcome
- weed control, yield, and net incomee0
- Direction
- greatere0
- Qualifier
- regardless of ratee0
- Comparator
- reduced-rate single applicationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sequential applications, regardless of rate, provided greater weed control, yield, and net income and lower coefficients of variation (C.V.s) of net income than reduced-rate single applications”
e1“glyphosate-resistant soybean planted in narrow rows”
Claim · model-written summary
Sequential applications gave lower coefficients of variation of net income than reduced-rate single applications.
- Taxon
- soybeanGlycine maxe1
- Treatment
- sequential applicationse0
- Outcome
- coefficients of variation (C.V.s) of net incomee0
- Direction
- lowere0
- Comparator
- reduced-rate single applicationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sequential applications, regardless of rate, provided greater weed control, yield, and net income and lower coefficients of variation (C.V.s) of net income than reduced-rate single applications”
e1“glyphosate-resistant soybean planted in narrow rows”
Claim · model-written summary
Single-application reduced-rate glyphosate showed a trend of decreased weed control, yield and net income.
- Taxon
- soybeanGlycine maxe1
- Treatment
- reduced rates of glyphosatee0
- Outcome
- weed control, yield, and net incomee0
- Direction
- decreasede0
- Qualifier
- a trende0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Single-application treatments showed a trend of decreased weed control, yield, and net income and higher C.V.s of net income with reduced rates of glyphosate”
e1“glyphosate-resistant soybean planted in narrow rows”
Claim · model-written summary
Single-application reduced-rate glyphosate showed higher coefficients of variation of net income.
- Taxon
- soybeanGlycine maxe1
- Treatment
- reduced rates of glyphosatee0
- Outcome
- C.V.s of net incomee0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Single-application treatments showed a trend of decreased weed control, yield, and net income and higher C.V.s of net income with reduced rates of glyphosate”
e1“glyphosate-resistant soybean planted in narrow rows”
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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.