Abstract
Abstract The spread of herbicide-resistant weeds is considered a major problem for rice production in California, and there is a need for new herbicides. Tetflupyrolimet is a new herbicide with a novel dihydroorotate dehydrogenase–inhibiting site of action that has strong activity on grasses. Three field studies were conducted at the California Rice Experiment Station in Biggs, CA, in 2022 and 2023 to (1) determine control of watergrass species and bearded sprangletop with tetflupyrolimet, (2) characterize the effects of tetflupyrolimet combined with other herbicides on weed control and rice, and (3) determine the response of rice cultivars to tetflupyrolimet. In the first study, tetflupyrolimet was applied at preemergence (PRE) or at the 1- to 2-leaf stage of rice (POST) at 0.1, 0.125, or 0.15 kg ai ha −1 followed by carfentrazone. Tetflupyrolimet provided ≥99% control of watergrass species and 100% bearded sprangletop control regardless of the rate or application timing, while showing no crop injury symptoms or yield reduction. In the second study, tetflupyrolimet was applied PRE or POST at 0.1 or 0.15 kg ai ha −1 followed by herbicides labeled for use in California rice production. Tetflupyrolimet provided ≥98% control of watergrass species, which was better than the grower standard treatment, and ≥97% control of bearded sprangletop. In the third study, tetflupyrolimet was applied PRE or POST at 0.125, 0.15, 0.25, or 0.3 kg ai ha −1 followed by carfentrazone. The six California rice cultivars evaluated, ‘M-105’, ‘M-206’, ‘M-209’, ‘M-211’, ‘L-208’, and ‘CM-203’, did not show any trend of crop injury caused by tetflupyrolimet. Overall, tetflupyrolimet provided a high level of control of watergrass species and bearded sprangletop without causing visual rice injury or yield reductions, regardless of rice cultivar, when applied alone or in combination with commonly used sedge and broadleaf herbicides in California water-seeded rice.
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Claims 6
Claim · model-written summary
Tetflupyrolimet provided at least 99% control of watergrass species in rice, regardless of rate or application timing.
- Taxon
- rice
Oryza sativat1 - Treatment
- Tetflupyrolimete2
- Interactor
- watergrass speciese2weed
- Outcome
- control of watergrass speciese2
- Direction
- increaseinferrede2
- Value
- ≥99%e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“California water-seeded rice”
e2“Tetflupyrolimet provided ≥99% control of watergrass species and 100% bearded sprangletop control regardless of the rate or application timing”
Claim · model-written summary
Tetflupyrolimet provided 100% control of bearded sprangletop in rice, regardless of rate or application timing.
- Taxon
- riceOryza sativat1
- Treatment
- Tetflupyrolimete2
- Interactor
- bearded sprangletope2weed
- Outcome
- bearded sprangletop controle2
- Direction
- increaseinferrede2
- Value
- 100%e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“California water-seeded rice”
e2“Tetflupyrolimet provided ≥99% control of watergrass species and 100% bearded sprangletop control regardless of the rate or application timing”
Claim · model-written summary
Tetflupyrolimet showed no crop injury symptoms or yield reduction in rice.
- Taxon
- riceOryza sativat1
- Treatment
- Tetflupyrolimete2
- Outcome
- crop injury symptoms or yield reductione3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“California water-seeded rice”
e2“Tetflupyrolimet provided ≥99% control of watergrass species and 100% bearded sprangletop control regardless of the rate or application timing”
e3“while showing no crop injury symptoms or yield reduction”
Claim · model-written summary
Tetflupyrolimet control of watergrass species in rice was better than the grower standard treatment, at least 98%.
- Taxon
- riceOryza sativat1
- Treatment
- Tetflupyrolimete4
- Interactor
- watergrass speciese4weed
- Outcome
- control of watergrass speciese4
- Direction
- bettere4
- Value
- ≥98%e4
- Comparator
- grower standard treatmente4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“California water-seeded rice”
e4“Tetflupyrolimet provided ≥98% control of watergrass species, which was better than the grower standard treatment, and ≥97% control of bearded sprangletop”
Claim · model-written summary
Tetflupyrolimet provided at least 97% control of bearded sprangletop in rice.
- Taxon
- riceOryza sativat1
- Treatment
- Tetflupyrolimete4
- Interactor
- bearded sprangletope4weed
- Outcome
- control of bearded sprangletope4
- Direction
- increaseinferrede4
- Value
- ≥97%e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t1“California water-seeded rice”
e4“Tetflupyrolimet provided ≥98% control of watergrass species, which was better than the grower standard treatment, and ≥97% control of bearded sprangletop”
Claim · model-written summary
Six California rice cultivars showed no trend of crop injury caused by tetflupyrolimet.
- Taxon
- riceOryza sativae6
- Material
- six California rice cultivarse6
- Treatment
- tetflupyrolimete6
- Outcome
- crop injurye6
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The six California rice cultivars evaluated, ‘M-105’, ‘M-206’, ‘M-209’, ‘M-211’, ‘L-208’, and ‘CM-203’, did not show any trend of crop injury caused by tetflupyrolimet”
The same questions in other papers
tetflupyrolimet · control · Oryza sativa (rice)Results agree
1 paper in the same direction as this paper
- positive
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.