Abstract
Field and greenhouse studies were conducted to evaluate sulfentrazone and flumioxazin as preemergence (PRE) herbicides for broadleaf weed control in potato. Sulfentrazone and flumioxazin were applied alone and in combination with s-metolachlor to determine the crop response and the weed spectrum controlled. These treatments were compared with metribuzin or rimsulfuron plus s-metolachlor treatments. Potato variety response to sulfentrazone and flumioxazin was evaluated in a separate field study. Sangre, Chipeta, Russet Norkotah, and Russet Nugget were treated with sulfentrazone from 0.14 to 0.28 kg/ha or flumioxazin from 0.035 to 0.07 kg/ha. Sulfentrazone and flumioxazin provided excellent broadleaf weed control at all the rates tested, whereas grass control increased as rate increased. Grass control improved when combined with s-metolachlor. Sulfentrazone and flumioxazin treatments were comparable with metribuzin and rimsulfuron treatments in weed control and total yield. Flumioxazin was safe when applied PRE to four selected varieties, whereas sulfentrazone produced initial phytotoxicity to Sangre and Chipeta at high rates but did not affect yields. Sulfentrazone increased the yield of U.S. No.1 potatoes compared with other treatments in the variety response study. Dose–response curves were used to generate the sulfentrazone, flumioxazin, and metribuzin herbicide rates required to reduce biomass by 50% (I50) for eight common weed species. Herbicides were applied PRE at several rates, and plant response was recorded. Log-logistic analysis was performed on bioassay data generated to estimate species sensitivity to each herbicide. Sulfentrazone reduced the biomass of hairy nightshade, black nightshade, redroot pigweed, kochia, common lambsquarters, and redstem filaree by more than 90% at 0.0175 kg/ha (the lowest rate evaluated), whereas flumioxazin had a similar effect on all broadleaf species except on kochia at 0.004 kg/ha (the lowest rate evaluated). Therefore, it was not possible to calculate I50 or even I80 values for most broadleaf species. Metribuzin I50 values could be calculated for most of the species tested. The metribuzin I50 value for hairy nightshade was 0.28 kg/ha, which was 16 and 70 times higher than the sulfentrazone and flumioxazin rates, respectively, that reduced hairy nightshade biomass by more than 90%. Sulfentrazone and flumioxazin appeared to be sufficiently safe when applied on potato and controlled several weed species common to potato production in the western United States.Nomenclature: Flumioxazin; sulfentrazone; black nightshade, Solanum nigrum L. #3 SOLNI; common lambsquarters, Chenopodium album L. # CHEAL; hairy nightshade, Solanum sarrachoides Sendtner # SOLSA; kochia, Kochia scoparia L. # KOCSC; redstem filaree, Erodium cicutarium L. # EROCI; redroot pigweed, Amaranthus retroflexus L. # AMARE; potato, Solanum tuberosum L. ‘Chipeta’, ‘Russet Norkotah’, ‘Russet Nugget’, ‘Sangre’.Additional index words: Arachis hypogaea, barnyardgrass, crop safety, diquat, ECHCG, Echinochloa crus-galli L., log-logistic analysis, MALNE, Malva neglecta Wallr., Panicum miliaceum L., PANMI, paraquat, Phaseolus lunatus, phytotoxicity, potato weed management, protoporphyrinogen oxidase inhibitors, Setaria viridis L., SETVI, weed dose–response, wild proso millet.Abbreviations: ALS, acetolactate synthase; I50, herbicide rate required to reduce biomass by 50%; OM, organic matter; POST, postemergence; PPO, protoporphyrinogen oxidase; PRE, preemergence; WAT, weeks after treatment.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 18
Claim · model-written summary
Sulfentrazone gave excellent broadleaf weed control at all tested rates.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- Sulfentrazonee0
- Outcome
- broadleaf weed controle0
- Direction
- excellente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sulfentrazone and flumioxazin provided excellent broadleaf weed control at all the rates tested”
t0“Potato”
Claim · model-written summary
Flumioxazin gave excellent broadleaf weed control at all tested rates.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- flumioxazine0
- Outcome
- broadleaf weed controle0
- Direction
- excellente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sulfentrazone and flumioxazin provided excellent broadleaf weed control at all the rates tested”
t0“Potato”
Claim · model-written summary
Grass control increased with herbicide rate.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- ratee0
- Outcome
- grass controle0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grass control increased as rate increased.”
t0“Potato”
Claim · model-written summary
Combining treatment with s-metolachlor improved grass control.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- s-metolachlore0
- Outcome
- Grass controle0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grass control improved when combined with s-metolachlor.”
t0“Potato”
Claim · model-written summary
Sulfentrazone treatments had comparable weed control to reference herbicides.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Sulfentrazonee0
- Outcome
- weed control and total yielde0
- Direction
- comparablee0
- Comparator
- metribuzin and rimsulfuron treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sulfentrazone and flumioxazin treatments were comparable with metribuzin and rimsulfuron treatments in weed control and total yield.”
t0“Potato”
Claim · model-written summary
Flumioxazin treatments had comparable weed control and total yield to reference herbicides.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- flumioxazine0
- Outcome
- weed control and total yielde0
- Direction
- comparablee0
- Comparator
- metribuzin and rimsulfuron treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sulfentrazone and flumioxazin treatments were comparable with metribuzin and rimsulfuron treatments in weed control and total yield.”
t0“Potato”
Claim · model-written summary
Preemergence flumioxazin was safe for four selected potato varieties.
- Taxon
- potatoSolanum tuberosumt0
- Material
- four selected varietiese0
- Treatment
- Flumioxazine0
- Outcome
- safee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Flumioxazin was safe when applied PRE to four selected varieties”
t0“Potato”
Claim · model-written summary
High sulfentrazone rates initially injured Sangre.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Sangree0
- Treatment
- sulfentrazonee0
- Outcome
- initial phytotoxicitye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sulfentrazone produced initial phytotoxicity to Sangre and Chipeta at high rates but did not affect yields.”
t0“Potato”
Claim · model-written summary
High sulfentrazone rates initially injured Chipeta.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Chipetae0
- Treatment
- sulfentrazonee0
- Outcome
- initial phytotoxicitye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sulfentrazone produced initial phytotoxicity to Sangre and Chipeta at high rates but did not affect yields.”
t0“Potato”
Claim · model-written summary
Sulfentrazone did not affect yields despite initial phytotoxicity.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- sulfentrazonee0
- Outcome
- yieldse0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sulfentrazone produced initial phytotoxicity to Sangre and Chipeta at high rates but did not affect yields.”
t0“Potato”
Claim · model-written summary
Sulfentrazone increased U.S. No.1 potato yield over other treatments.
- Taxon
- potatoesSolanum tuberosume0
- Treatment
- Sulfentrazonee0
- Outcome
- yield of U.S. No.1 potatoese0
- Direction
- increasede0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sulfentrazone increased the yield of U.S. No.1 potatoes compared with other treatments”
Claim · model-written summary
At 0.0175 kg/ha sulfentrazone reduced biomass of six weed species by over 90%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Sulfentrazonee0
- Outcome
- biomass of hairy nightshade, black nightshade, redroot pigweed, kochia, common lambsquarters, and redstem filareee0
- Direction
- reducede0
- Value
- more than 90%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sulfentrazone reduced the biomass of hairy nightshade, black nightshade, redroot pigweed, kochia, common lambsquarters, and redstem filaree by more than 90% at 0.0175 kg/ha”
t0“Potato”
Claim · model-written summary
Flumioxazin similarly reduced broadleaf weed biomass except kochia at 0.004 kg/ha.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- flumioxazine0
- Outcome
- all broadleaf species except on kochiae0
- Direction
- similar effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“flumioxazin had a similar effect on all broadleaf species except on kochia at 0.004 kg/ha”
t0“Potato”
Claim · model-written summary
Most broadleaf species lacked calculable I50 or I80 values under these treatments.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- I50 or even I80 valuese0
- Comparator
- most broadleaf speciese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it was not possible to calculate I50 or even I80 values for most broadleaf species.”
t0“Potato”
Claim · model-written summary
Metribuzin I50 values could be calculated for most tested species.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- Metribuzin I50 valuese0
- Comparator
- most of the species testede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Metribuzin I50 values could be calculated for most of the species tested.”
t0“Potato”
Claim · model-written summary
Hairy nightshade metribuzin I50 was 0.28 kg/ha.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- metribuzin I50 value for hairy nightshadee0
- Value
- 0.28 kg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The metribuzin I50 value for hairy nightshade was 0.28 kg/ha”
t0“Potato”
Claim · model-written summary
The metribuzin I50 for hairy nightshade was 16 times the sulfentrazone rate giving over 90% biomass reduction.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- sulfentrazonee0
- Outcome
- hairy nightshade biomasse0
- Direction
- highere0
- Value
- 16e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which was 16 and 70 times higher than the sulfentrazone and flumioxazin rates, respectively, that reduced hairy nightshade biomass by more than 90%.”
t0“Potato”
Claim · model-written summary
The metribuzin I50 for hairy nightshade was 70 times the flumioxazin rate giving over 90% biomass reduction.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- flumioxazine0
- Outcome
- hairy nightshade biomasse0
- Direction
- highere0
- Value
- 70e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which was 16 and 70 times higher than the sulfentrazone and flumioxazin rates, respectively, that reduced hairy nightshade biomass by more than 90%.”
t0“Potato”
The same questions in other papers
sulfentrazone · yield · Solanum tuberosum (potato)Positive and negative results
3 in the opposite direction
- negative
- no effect
- negative
sulfentrazone · crop injury · Solanum tuberosum (potato)Results agree
2 papers in the same direction as this paper
- negative
- negative
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.