Abstract
Pre- and post-emergent control of Aneilema keisak was investigated in no-till paddy fields. In addition, a pot trial was conducted to determine use rates of the experimental post-emergent herbicide LGC40863. For pre-emergent control, butachlor(1,800g ai/ha), pretilachlor(600g ai/ha), pretilachlor plus pyrazosulfuron(300+18g ai/ha, respectively), thiobencarb plus bensulfuron(2,100+51g ai/ha, respectively), and molinate plus pyrazosulfuron(1,500+21g ai/ha, repectively) were treated at 20 days before seeding. Among the herbicides, molinate plus pyrazosulfuron was the least effective (23% control), while all other herbicides provided excellent(>95%) control of A. keisak. None of these herbicides caused rice phytotoxicity. However, rice yield in the plot treated with molinate plus pyrazosulfuron decreased about 50% due to poor A. keisak control. LGC40863 controlled A. keisak completely, by foliar application, across wide growth stages from the 5- to 15-leaf at 50g ai/ha in pot tests. In the field, treatment of LGC40863(30 to 50g ai/ha) provided >95% control of A. keisak when treated either at 15 days after transplanting or at non-productive tillering stage. Efficacy of 2,4-D and bentazon was insufficient when treated at non-productive tillering stage. These results suggest that, in no-till paddy fields, A. keisak is controlled by pre-emergent application of butachlor, pretilachlor, pretilachlor plus pyrazosulfuron, or thiobencarb plus bensulfuron, and by post-emergent application of LGC40863.
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Claims 9
Claim · model-written summary
Molinate plus pyrazosulfuron gave 23% weed control, the least among tested herbicides.
- Taxon
- Rice
Oryza sativat0 - Treatment
- molinate plus pyrazosulfurone0
- Interactor
- A. keisak
Murdannia keisake1weed - Outcome
- controle0
- Direction
- least effectivee0
- Value
- 23%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“molinate plus pyrazosulfuron was the least effective (23% control)”
t0“Rice”
e1“poor A. keisak control”
Claim · model-written summary
Other pre-emergent herbicides gave greater than 95% weed control.
- Taxon
- RiceOryza sativat0
- Treatment
- all other herbicidese0
- Interactor
- A. keisakMurdannia keisake0weed
- Outcome
- control of A. keisake0
- Direction
- excellente0
- Value
- >95%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all other herbicides provided excellent(>95%) control of A. keisak”
t0“Rice”
Claim · model-written summary
The tested pre-emergent herbicides caused no rice phytotoxicity.
- Taxon
- riceOryza sativae0
- Treatment
- these herbicidese0
- Outcome
- rice phytotoxicitye0
- Direction
- Nonee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“None of these herbicides caused rice phytotoxicity.”
Claim · model-written summary
Rice yield fell about 50% under molinate plus pyrazosulfuron due to poor weed control.
- Taxon
- riceOryza sativae0
- Treatment
- molinate plus pyrazosulfurone0
- Interactor
- A. keisakMurdannia keisake0weed
- Outcome
- rice yielde0
- Direction
- decreasede0
- Value
- about 50%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice yield in the plot treated with molinate plus pyrazosulfuron decreased about 50% due to poor A. keisak control”
Claim · model-written summary
Foliar LGC40863 at 50g ai/ha completely controlled the weed from the 5- to 15-leaf stage in pots.
- Taxon
- RiceOryza sativat0
- Organ / stage
- 5- to 15-leafe0
- Treatment
- LGC40863e0
- Interactor
- A. keisakMurdannia keisake0weed
- Outcome
- A. keisake0
- Direction
- completelye0
- Value
- 50g ai/hae0
- Setting
- pot testse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“LGC40863 controlled A. keisak completely, by foliar application, across wide growth stages from the 5- to 15-leaf at 50g ai/ha in pot tests”
t0“Rice”
Claim · model-written summary
Field LGC40863 at 30 to 50g ai/ha gave greater than 95% control of the weed at either timing.
- Taxon
- RiceOryza sativat0
- Treatment
- LGC40863(30 to 50g ai/ha)e0
- Interactor
- A. keisakMurdannia keisake0weed
- Outcome
- control of A. keisake0
- Direction
- >95%e0
- Value
- >95%e0
- Setting
- fielde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the field, treatment of LGC40863(30 to 50g ai/ha) provided >95% control of A. keisak when treated either at 15 days after transplanting or at non-productive tillering stage.”
t0“Rice”
Claim · model-written summary
2,4-D had insufficient weed control at non-productive tillering.
- Taxon
- RiceOryza sativat0
- Treatment
- 2,4-De0
- Interactor
- A. keisakMurdannia keisake1weed
- Outcome
- Efficacye0
- Direction
- insufficiente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Efficacy of 2,4-D and bentazon was insufficient when treated at non-productive tillering stage.”
e1“poor A. keisak control”
t0“Rice”
Claim · model-written summary
Bentazon had insufficient weed control at non-productive tillering.
- Taxon
- RiceOryza sativat0
- Treatment
- bentazone0
- Interactor
- A. keisakMurdannia keisake1weed
- Outcome
- Efficacye0
- Direction
- insufficiente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Efficacy of 2,4-D and bentazon was insufficient when treated at non-productive tillering stage.”
e1“poor A. keisak control”
t0“Rice”
Claim · model-written summary
The authors recommend specified pre-emergent herbicides and post-emergent LGC40863 for weed control.
- Taxon
- RiceOryza sativat0
- Interactor
- A. keisakMurdannia keisake0weed
- Outcome
- pre-emergent application of butachlor, pretilachlor, pretilachlor plus pyrazosulfuron, or thiobencarb plus bensulfuron, and by post-emergent application of LGC40863e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A. keisak is controlled by pre-emergent application of butachlor, pretilachlor, pretilachlor plus pyrazosulfuron, or thiobencarb plus bensulfuron, and by post-emergent application of LGC40863.”
t0“Rice”
The same questions in other papers
herbicide · crop injury · Oryza sativa (rice)Positive and negative results
9 papers in the same direction as this paper · 42 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
49 papers more in this group
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.