Abstract
Studies were conducted in 2007 and 2008 at Clinton, NC to determine the effect of glyphosate applied POST via a Dixie wick applicator on Palmer amaranth control and sweetpotato yield and quality. In 2007, treatments consisted of glyphosate wicked sequentially 6 and 8 wk after transplanting (WAP) and glyphosate wicked sequentially 6 and 8 WAP followed by (fb) rotary mowing 9 WAP. In 2008, treatments consisted of glyphosate wicked once 4 or 7 WAP, wicked sequentially 4 and 7 WAP, mowed once 4 WAP, and mowed 4 WAP fb wicking 7 WAP. In 2008, Palmer amaranth control 6 WAP varied by location and averaged 10 and 58% for plots wicked 4 WAP. Palmer amaranth contacted by the wicking apparatus were controlled, but weeds shorter than the wicking height escaped treatment. Palmer amaranth control 9 WAP was greater than 90% for all treatments wicked 7 WAP. Competition prior to and between glyphosate treatments contributed to large sweetpotato yield losses. Treatments consisting of glyphosate 7 or 8 WAP (in 2007 and 2008, respectively) frequently had greater no. 1 and marketable yields compared to the weedy control. However, jumbo, no. 1, and marketable yields for all glyphosate and mowing treatments were generally less than half the hand-weeded check. Cracked sweetpotato roots were observed in glyphosate treatments and percent cracking (by weight) in those plots ranged from 1 to 12% for no. 1 roots, and 1 to 6% for marketable roots. Findings from this research suggest wicking might be useful in a salvage scenario, but only after currently registered preemergence herbicides and between-row cultivation have failed to control Palmer amaranth and other weed species below the sweetpotato canopy.
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Claims 10
Claim · model-written summary
At 6 WAP in 2008, Palmer amaranth control after 4-WAP wicking varied by location and averaged 10 and 58%.
- Taxon
- Sweetpotato
_Flower.jpg?width=60)
Ipomoea batatast0 - Treatment
- plots wicked 4 WAPe0
- Interactor
- Palmer amaranthe0weed
- Outcome
- Palmer amaranth controle0
- Direction
- variede0
- Value
- 10 and 58%e0
- Qualifier
- 6 WAPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“In 2008, Palmer amaranth control 6 WAP varied by location and averaged 10 and 58% for plots wicked 4 WAP.”
t0“Sweetpotato”
Claim · model-written summary
Palmer amaranth touched by the wick was controlled.
- Taxon
- SweetpotatoIpomoea batatast0
- Treatment
- wicking apparatuse0
- Interactor
- Palmer amaranthe0weed
- Outcome
- Palmer amaranthe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Palmer amaranth contacted by the wicking apparatus were controlled”
t0“Sweetpotato”
Claim · model-written summary
Palmer amaranth below wick height escaped treatment.
- Taxon
- SweetpotatoIpomoea batatast0
- Interactor
- Palmer amaranthe1weed
- Outcome
- weedse0
- Qualifier
- shorter than the wicking heighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“weeds shorter than the wicking height escaped treatment”
t0“Sweetpotato”
e1“Studies were conducted in 2007 and 2008 at Clinton, NC to determine the effect of glyphosate applied POST via a Dixie wick applicator on Palmer amaranth control and sweetpotato yield and quality.”
Claim · model-written summary
Treatments wicked at 7 WAP controlled more than 90% of Palmer amaranth at 9 WAP.
- Taxon
- SweetpotatoIpomoea batatast0
- Treatment
- treatments wicked 7 WAPe0
- Interactor
- Palmer amaranthe0weed
- Outcome
- Palmer amaranth controle0
- Direction
- greater thane0
- Value
- 90%e0
- Qualifier
- 9 WAPe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Palmer amaranth control 9 WAP was greater than 90% for all treatments wicked 7 WAP.”
t0“Sweetpotato”
Claim · model-written summary
Palmer amaranth competition before and between glyphosate treatments caused large sweetpotato yield losses.
- Taxon
- SweetpotatoIpomoea batatast0
- Interactor
- Palmer amaranthe1weed
- Outcome
- sweetpotato yield lossese0
- Qualifier
- Competition prior to and between glyphosate treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Competition prior to and between glyphosate treatments contributed to large sweetpotato yield losses.”
t0“Sweetpotato”
e1“Studies were conducted in 2007 and 2008 at Clinton, NC to determine the effect of glyphosate applied POST via a Dixie wick applicator on Palmer amaranth control and sweetpotato yield and quality.”
Claim · model-written summary
Glyphosate at 7 or 8 WAP frequently yielded more no. 1 and marketable roots than the weedy control.
- Taxon
- SweetpotatoIpomoea batatast0
- Treatment
- glyphosate 7 or 8 WAPe0
- Interactor
- Palmer amaranthe1weed
- Outcome
- no. 1 and marketable yieldse0
- Direction
- greatere0
- Qualifier
- frequentlye0
- Comparator
- the weedy controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatments consisting of glyphosate 7 or 8 WAP (in 2007 and 2008, respectively) frequently had greater no. 1 and marketable yields compared to the weedy control.”
t0“Sweetpotato”
e1“Studies were conducted in 2007 and 2008 at Clinton, NC to determine the effect of glyphosate applied POST via a Dixie wick applicator on Palmer amaranth control and sweetpotato yield and quality.”
Claim · model-written summary
Glyphosate and mowing treatments generally produced under half the hand-weeded check yield for jumbo, no. 1 and marketable roots.
- Taxon
- SweetpotatoIpomoea batatast0
- Treatment
- all glyphosate and mowing treatmentse0
- Interactor
- Palmer amaranthe1weed
- Outcome
- jumbo, no. 1, and marketable yieldse0
- Direction
- less thane0
- Value
- halfe0
- Qualifier
- generallye0
- Comparator
- the hand-weeded checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“jumbo, no. 1, and marketable yields for all glyphosate and mowing treatments were generally less than half the hand-weeded check.”
t0“Sweetpotato”
e1“Studies were conducted in 2007 and 2008 at Clinton, NC to determine the effect of glyphosate applied POST via a Dixie wick applicator on Palmer amaranth control and sweetpotato yield and quality.”
Claim · model-written summary
Glyphosate-treated plots had 1 to 12% cracking by weight among no. 1 roots.
- Taxon
- SweetpotatoIpomoea batatast0
- Organ / stage
- no. 1 rootse0
- Treatment
- glyphosate applied POSTe1
- Outcome
- percent cracking (by weight)e0
- Value
- 1 to 12%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“percent cracking (by weight) in those plots ranged from 1 to 12% for no. 1 roots, and 1 to 6% for marketable roots”
t0“Sweetpotato”
e1“Studies were conducted in 2007 and 2008 at Clinton, NC to determine the effect of glyphosate applied POST via a Dixie wick applicator on Palmer amaranth control and sweetpotato yield and quality.”
Claim · model-written summary
Glyphosate-treated plots had 1 to 6% cracking by weight among marketable roots.
- Taxon
- SweetpotatoIpomoea batatast0
- Organ / stage
- marketable rootse0
- Treatment
- glyphosate applied POSTe1
- Outcome
- percent cracking (by weight)e0
- Value
- 1 to 6%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“percent cracking (by weight) in those plots ranged from 1 to 12% for no. 1 roots, and 1 to 6% for marketable roots”
t0“Sweetpotato”
e1“Studies were conducted in 2007 and 2008 at Clinton, NC to determine the effect of glyphosate applied POST via a Dixie wick applicator on Palmer amaranth control and sweetpotato yield and quality.”
Claim · model-written summary
The authors suggest wicking for salvage only after registered preemergence herbicides and between-row cultivation fail.
- Taxon
- SweetpotatoIpomoea batatast0
- Interactor
- Palmer amaranthe0weed
- Outcome
- wicking might be useful in a salvage scenarioe0
- Qualifier
- only after currently registered preemergence herbicides and between-row cultivation have failed to control Palmer amaranth and other weed species below the sweetpotato canopye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wicking might be useful in a salvage scenario, but only after currently registered preemergence herbicides and between-row cultivation have failed to control Palmer amaranth and other weed species below the sweetpotato canopy”
t0“Sweetpotato”
The same questions in other papers
glyphosate · quality: postharvest · Ipomoea batatas (sweet potato)Positive and negative results
1 in the opposite direction
- negative
transplanting · quality: postharvest · Ipomoea batatas (sweet potato)Positive and negative results
1 paper in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- negative
2 papers more in this group
See all 6 papers →transplanting · control · Ipomoea batatas (sweet potato)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative
- positive
- no effect
- no effect
4 papers more in this group
See all 8 papers →pruning · quality: postharvest · Ipomoea batatas (sweet potato)Results agree
1 paper in the same direction as this paper
- no effect
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.