Abstract
Abstract With the introduction of tetflupyrolimet as the first herbicide with a novel site of action in the last three decades, screening for herbicide resistance before commercialization has become integral to ensure successful applications. In the mid-southern United States, tetflupyrolimet is anticipated to be used as a preemergence (PRE) herbicide for barnyardgrass control but does exhibit postemergence (POST) herbicidal activity. In 2020, 45 Echinochloa crus-galli (barnyardgrass) accessions were collected from rice-producing areas in Arkansas and were screened in the greenhouse to tetflupyrolimet at 134 g ai ha -1 PRE and POST at the 2- to 3-leaf growth stage on a silt loam soil. A field experiment was conducted where tetflupyrolimet was applied alone at 134 g ai ha -1 or with clomazone at 336 g ai ha -1 , to a susceptible barnyardgrass standard and four other accessions with confirmed resistance to florpyrauxifen-benzyl, imazethapyr, propanil, and quinclorac at the spiking, 1-, 2-, 3-, and 4-leaf stages. For the PRE screening, the percent visible control ranged from 88% to 99%, with some accessions differing in sensitivity to tetflupyrolimet. Percent mortality ranged from 47% to 90% at the PRE timing. Visible control and mortality ranged from 63% to 88% and 7% to 65%, respectively, from a POST application, suggesting there is differential sensitivity and that foliar applications may not be as effective as soil applications. In the field experiment, barnyardgrass accession did not influence POST biomass production and was impacted more by the growth stage at application, although the difference was frequently numerical. In general, applying tetflupyrolimet alone or with clomazone to ≥3 leaf grass compromised performance. Tetflupyrolimet will be better optimized as a soil-applied herbicide in mid-southern U.S. rice culture.
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Claims 7
Claim · model-written summary
PRE tetflupyrolimet gave 88% to 99% visible control, with accession differences.
- Taxon
- Rice
Oryza sativat0 - Treatment
- tetflupyrolimete0
- Interactor
- accessionse0weed
- Outcome
- percent visible controle0
- Value
- 88% to 99%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For the PRE screening, the percent visible control ranged from 88% to 99%, with some accessions differing in sensitivity to tetflupyrolimet.”
t0“Rice”
Claim · model-written summary
PRE mortality ranged from 47% to 90%.
- Taxon
- RiceOryza sativat0
- Treatment
- PRE timinge0
- Interactor
- Echinochloa crus-galli
Echinochloa crus-gallit0weed - Outcome
- Percent mortalitye0
- Value
- 47% to 90%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Percent mortality ranged from 47% to 90% at the PRE timing.”
t0“Echinochloa crus-galli Biotypes in Arkansas Rice”
Claim · model-written summary
POST visible control ranged from 63% to 88%.
- Taxon
- RiceOryza sativat0
- Treatment
- POST applicatione0
- Interactor
- Echinochloa crus-galliEchinochloa crus-gallit0weed
- Outcome
- Visible controle0
- Value
- 63% to 88%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Visible control and mortality ranged from 63% to 88% and 7% to 65%, respectively, from a POST application”
t0“Echinochloa crus-galli Biotypes in Arkansas Rice”
Claim · model-written summary
POST mortality ranged from 7% to 65%.
- Taxon
- RiceOryza sativat0
- Treatment
- POST applicatione0
- Interactor
- Echinochloa crus-galliEchinochloa crus-gallit0weed
- Outcome
- mortalitye0
- Value
- 7% to 65%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Visible control and mortality ranged from 63% to 88% and 7% to 65%, respectively, from a POST application”
t0“Echinochloa crus-galli Biotypes in Arkansas Rice”
Claim · model-written summary
Barnyardgrass accession did not influence POST biomass production.
- Taxon
- RiceOryza sativat0
- Material
- barnyardgrass accessione0
- Interactor
- barnyardgrassEchinochloa crus-gallie0weed
- Outcome
- POST biomass productione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barnyardgrass accession did not influence POST biomass production”
t0“Rice”
Claim · model-written summary
Application at three or more leaf stage compromised performance.
- Taxon
- RiceOryza sativat0
- Organ / stage
- ≥3 leafe0
- Treatment
- tetflupyrolimet alone or with clomazonee0
- Interactor
- Echinochloa crus-galliEchinochloa crus-gallit0weed
- Outcome
- performancee0
- Direction
- compromisede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“applying tetflupyrolimet alone or with clomazone to ≥3 leaf grass compromised performance”
t0“Echinochloa crus-galli Biotypes in Arkansas Rice”
Claim · model-written summary
The authors recommend soil application of tetflupyrolimet in rice.
- Taxon
- riceOryza sativae0
- Outcome
- soil-applied herbicidee0
- Setting
- mid-southern U.S.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tetflupyrolimet will be better optimized as a soil-applied herbicide in mid-southern U.S. rice culture.”
The same questions in other papers
clomazone · Echinochloa crus-galli · Oryza sativa (rice)Positive and negative results
3 papers in the same direction as this paper · 8 in the opposite direction
- positive
- positive
- positive
8 papers more in this group
See all 12 papers →tetflupyrolimet · control · Oryza sativa (rice)Results agree
1 paper in the same direction as this paper
- positive
herbicide · Echinochloa crus-galli · Oryza sativa (rice)Positive and negative results
29 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- negative
- negative
30 papers more in this group
See all 34 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.