Abstract
Abstract Many factors such as environment, herbicide rate, growth stage at application, and days between sequential applications can influence the response of a crop to herbicides. Florpyrauxifen-benzyl is a new broad-spectrum, POST herbicide that was commercialized for use in U.S. rice production in 2018. Field experiments were conducted in 2018 at the Pine Tree Research Station (PTRS) near Colt, AR, and the Rice Research and Extension Center (RREC), near Stuttgart, AR, to evaluate crop injury and yield response of three rice cultivars to sequential applications of florpyrauxifen-benzyl. Greenhouse and growth chamber experiments were conducted at the Altheimer Laboratory in Fayetteville, AR, to evaluate cultivar responses when florpyrauxifen-benzyl was applied at 30 or 60 g ae ha −1 to rice exposed to different temperature regimes or at various growth stages. Three rice cultivars were used in all experiments: long-grain variety ‘CL111’, medium-grain variety ‘CL272’, and long-grain hybrid cultivar ‘CLXL745’. CL111 exhibited sufficient tolerance to florpyrauxifen-benzyl with only 10% visible injury and no effect on yield. CL272 showed 15% injury 3 wk after the second application in the field experiment when applications were made 14 d apart. Additionally, 12% injury was observed in greenhouse studies when florpyrauxifen-benzyl was applied at 30 g ae ha −1, averaged over various growth stages at application. Florpyrauxifen-benzyl did not reduce the yield of CL272 in field experiments, indicating that CL272 can recover from florpyrauxifen-benzyl injury. As much as 64% injury was observed for CLXL745 at 3 wk after application (WAA) when sequential herbicide applications were made 4 d apart. High levels of injury occurred in the growth chamber and greenhouse studies for this cultivar as well. Sequential applications of florpyrauxifen-benzyl reduced yields of CLXL745 in nearly all treatments. Data from these experiments suggest that CL272 and CLXL745 are sensitive to sequential applications of florpyrauxifen-benzyl. Growers must follow the prescribed guidelines for using florpyrauxifen-benzyl in these cultivars and others like it.
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Claims 9
Claim · model-written summary
CL111 had 10% visible injury after florpyrauxifen-benzyl.
- Taxon
- rice
Oryza sativat0 - Material
- CL111e0
- Treatment
- florpyrauxifen-benzyle0
- Outcome
- visible injurye0
- Direction
- injurye0
- Value
- 10%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CL111 exhibited sufficient tolerance to florpyrauxifen-benzyl with only 10% visible injury”
t0“rice”
Claim · model-written summary
Florpyrauxifen-benzyl did not affect CL111 yield.
- Taxon
- riceOryza sativat0
- Material
- CL111e0
- Treatment
- florpyrauxifen-benzyle0
- Outcome
- yielde0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CL111 exhibited sufficient tolerance to florpyrauxifen-benzyl with only 10% visible injury and no effect on yield”
t0“rice”
Claim · model-written summary
CL272 had 15% field injury three weeks after a second application when applications were 14 days apart.
- Taxon
- riceOryza sativat0
- Material
- CL272e0
- Treatment
- second applicatione0
- Outcome
- injurye0
- Direction
- injurye0
- Value
- 15%e0
- Qualifier
- 14 d aparte0
- Setting
- field experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CL272 showed 15% injury 3 wk after the second application in the field experiment when applications were made 14 d apart”
t0“rice”
Claim · model-written summary
CL272 had 12% greenhouse injury at 30 g ae ha −1 averaged over application stages.
- Taxon
- riceOryza sativat0
- Material
- CL272e1
- Treatment
- florpyrauxifen-benzyl was applied at 30 g ae ha −1e0
- Outcome
- injurye0
- Direction
- injurye0
- Value
- 12%e0
- Setting
- greenhouse studiese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“12% injury was observed in greenhouse studies when florpyrauxifen-benzyl was applied at 30 g ae ha −1, averaged over various growth stages at application”
t0“rice”
e1“CL272 showed 15% injury 3 wk after the second application in the field experiment when applications were made 14 d apart”
Claim · model-written summary
Florpyrauxifen-benzyl did not reduce CL272 field yield.
- Taxon
- riceOryza sativat0
- Material
- CL272e0
- Treatment
- Florpyrauxifen-benzyle0
- Outcome
- yielde0
- Direction
- did not reducee0
- Setting
- field experimentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Florpyrauxifen-benzyl did not reduce the yield of CL272 in field experiments”
t0“rice”
Claim · model-written summary
CLXL745 had up to 64% injury after sequential applications four days apart.
- Taxon
- riceOryza sativat0
- Material
- CLXL745e0
- Treatment
- sequential herbicide applicationse0
- Outcome
- injurye0
- Direction
- injurye0
- Value
- 64%e0
- Qualifier
- 4 d aparte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As much as 64% injury was observed for CLXL745 at 3 wk after application (WAA) when sequential herbicide applications were made 4 d apart”
t0“rice”
Claim · model-written summary
CLXL745 also showed high injury in growth chamber and greenhouse studies.
- Taxon
- riceOryza sativat0
- Material
- CLXL745e1
- Outcome
- injurye0
- Direction
- High levelse0
- Setting
- growth chamber and greenhouse studiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High levels of injury occurred in the growth chamber and greenhouse studies for this cultivar”
t0“rice”
e1“As much as 64% injury was observed for CLXL745 at 3 wk after application (WAA) when sequential herbicide applications were made 4 d apart”
Claim · model-written summary
Sequential florpyrauxifen-benzyl applications reduced CLXL745 yield in nearly all treatments.
- Taxon
- riceOryza sativat0
- Material
- CLXL745e0
- Treatment
- Sequential applications of florpyrauxifen-benzyle0
- Outcome
- yieldse0
- Direction
- reducede0
- Qualifier
- nearly all treatmentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sequential applications of florpyrauxifen-benzyl reduced yields of CLXL745 in nearly all treatments”
t0“rice”
Claim · model-written summary
The authors advise following prescribed florpyrauxifen-benzyl guidelines for these cultivars.
- Taxon
- riceOryza sativat0
- Outcome
- follow the prescribed guidelines for using florpyrauxifen-benzyle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growers must follow the prescribed guidelines for using florpyrauxifen-benzyl in these cultivars and others like it”
t0“rice”
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See all 53 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.