Abstract
Abstract Field studies were conducted at the Pontotoc Ridge–Flatwoods Branch Experiment Station in Pontotoc, MS, in 2016 and 2017 to determine sweetpotato crop response to saflufenacil and rimsulfuron/thifensulfuron-methyl. Saflufenacil treatments consisted of a factorial of two rates (25 or 50 g ai ha –1 ) by three application timings [0, 3, or 6 wk before transplanting (WBP)]. Rimsulfuron/thifensulfuron-methyl treatments consisted of a factorial of two rates (18/18 or 35/35 g ai ha –1 ) by two application timings (3 or 6 WBP). A nontreated check was included for comparison. Saflufenacil resulted in as much as 20% stunting injury in 2016, but ≤4% crop injury in 2017. Compared to the nontreated check, saflufenacil did not reduce yield of any sweetpotato grade regardless of application rate or timing. Findings from this trial indicate that saflufenacil applied in pre-transplanting burndown and field preparation procedures did not have a negative impact on the subsequent sweetpotato crop and that the current plant-back interval (4 to 5 mo) may be excessive. Applications of rimsulfuron/thifensulfuron-methyl at 35/35 g ha –1 made 3 WBP resulted in significant crop injury but did not reduce yield of any sweetpotato grade. Findings from this trial suggest that rimsulfuron/thifensulfuron-methyl applications up to 35/35 g ha –1 applied at least 6 WBP and 18/18 g ha –1 applied at least 3 WBP had little impact on sweetpotato crop growth and may be a safe preplant burndown option.
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Claims 8
Claim · model-written summary
Saflufenacil caused up to 20% sweetpotato stunting injury in 2016.
- Taxon
- Sweetpotato
_Flower.jpg?width=60)
Ipomoea batatast0 - Treatment
- Saflufenacile0
- Outcome
- stunting injurye0
- Value
- 20%e0
- Setting
- 2016e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“Saflufenacil resulted in as much as 20% stunting injury in 2016”
t0“Sweetpotato”
Claim · model-written summary
Saflufenacil caused no more than 4% sweetpotato crop injury in 2017.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“≤4% crop injury in 2017”
e1“Saflufenacil resulted in as much as 20% stunting injury in 2016”
t0“Sweetpotato”
Claim · model-written summary
Saflufenacil did not reduce yield in any sweetpotato grade versus untreated checks at any rate or timing.
- Taxon
- sweetpotatoIpomoea batatase0
- Treatment
- saflufenacile0
- Outcome
- yield of any sweetpotato gradee0
- Direction
- did not reducee0
- Qualifier
- regardless of application rate or timinge0
- Comparator
- nontreated checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to the nontreated check, saflufenacil did not reduce yield of any sweetpotato grade regardless of application rate or timing”
Claim · model-written summary
The authors suggest the current 4 to 5 month saflufenacil plant-back interval may be excessive.
- Taxon
- SweetpotatoIpomoea batatast0
- Treatment
- saflufenacile1
- Outcome
- plant-back intervale0
- Value
- 4 to 5 moe0
- Qualifier
- may be excessivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the current plant-back interval (4 to 5 mo) may be excessive”
e1“saflufenacil applied in pre-transplanting burndown and field preparation procedures”
t0“Sweetpotato”
Claim · model-written summary
Rimsulfuron/thifensulfuron-methyl at 35/35 g ha –1 three weeks before transplanting caused significant crop injury.
- Taxon
- SweetpotatoIpomoea batatast0
- Treatment
- rimsulfuron/thifensulfuron-methyl at 35/35 g ha –1 made 3 WBPe0
- Outcome
- crop injurye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applications of rimsulfuron/thifensulfuron-methyl at 35/35 g ha –1 made 3 WBP resulted in significant crop injury”
t0“Sweetpotato”
Claim · model-written summary
Rimsulfuron/thifensulfuron-methyl at 35/35 g ha –1 three weeks before transplanting did not reduce any sweetpotato grade yield.
- Taxon
- sweetpotatoIpomoea batatase0
- Treatment
- rimsulfuron/thifensulfuron-methyl at 35/35 g ha –1 made 3 WBPe0
- Outcome
- yield of any sweetpotato gradee0
- Direction
- did not reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applications of rimsulfuron/thifensulfuron-methyl at 35/35 g ha –1 made 3 WBP resulted in significant crop injury but did not reduce yield of any sweetpotato grade”
Claim · model-written summary
The authors suggest 35/35 g ha –1 at least six weeks before transplanting has little impact on sweetpotato growth and may safely be used before planting.
- Taxon
- sweetpotatoIpomoea batatase0
- Treatment
- rimsulfuron/thifensulfuron-methyl applications up to 35/35 g ha –1 applied at least 6 WBPe0
- Outcome
- little impact on sweetpotato crop growthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rimsulfuron/thifensulfuron-methyl applications up to 35/35 g ha –1 applied at least 6 WBP and 18/18 g ha –1 applied at least 3 WBP had little impact on sweetpotato crop growth and may be a safe preplant burndown option”
Claim · model-written summary
The authors suggest 18/18 g ha –1 at least three weeks before transplanting has little impact on sweetpotato growth and may safely be used before planting.
- Taxon
- sweetpotatoIpomoea batatase0
- Treatment
- 18/18 g ha –1 applied at least 3 WBPe0
- Outcome
- little impact on sweetpotato crop growthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rimsulfuron/thifensulfuron-methyl applications up to 35/35 g ha –1 applied at least 6 WBP and 18/18 g ha –1 applied at least 3 WBP had little impact on sweetpotato crop growth and may be a safe preplant burndown option”
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See all 18 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.