Abstract
A field study was conducted in the boro season of 2011-12 and aman season of 2012 at Jessore, Bangladesh, to evaluate the performance of sequential applications of preemergence herbicides (oxadiargyl 80 g ai ha(-1), pendimethalin 850 g ai ha(-1), acetachlor + bensulfuranmethyl 240 g ai ha(-1), and pyrazosulfuron 15 g ai ha(-1)) followed by a postemergence herbicide (ethoxysulfuron 18 g ai ha(-1)) in dry-seeded rice. All evaluated herbicides reduced weed density and biomass by a significant amount. Among herbicides, pendimethalin, oxadiargyl, and acetachlor + bensulfuranmethyl performed very well against grasses; pyrazosulfuron, on the other hand, was not effective. The best herbicide for broadleaf weed control was oxadiargyl (65-85% control); pendimethalin and acetachlor + bensulfuraonmethyl were not effective for this purpose. The best combination for weed control was oxadiargyl followed by ethoxysulfuron in the boro season and oxadiargyl followed by a one-time hand weeding in the aman season. Compared with the partial weedy plots (hand weeded once), oxadiargyl followed by ethoxysulfuron (4.13 t ha(-1)) provided a 62% higher yield in the boro season while oxadiargyl followed by a one-time hand weeding (4.08 t ha(-1)) provided a 37% higher yield in the aman season.
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Claims 9
Claim · model-written summary
All tested herbicides significantly reduced weed density and biomass.
- Taxon
- Rice
Oryza sativat0 - Treatment
- evaluated herbicidese0
- Interactor
- weede0weed
- Outcome
- weed density and biomasse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All evaluated herbicides reduced weed density and biomass by a significant amount.”
t0“Dry-Seeded Rice”
Claim · model-written summary
Pendimethalin, oxadiargyl, and acetachlor plus bensulfuranmethyl performed well against grasses.
- Taxon
- RiceOryza sativat0
- Treatment
- pendimethalin, oxadiargyl, and acetachlor + bensulfuranmethyle0
- Interactor
- grassese0weed
- Outcome
- performed very well against grassese0
- Direction
- very welle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pendimethalin, oxadiargyl, and acetachlor + bensulfuranmethyl performed very well against grasses”
t0“Dry-Seeded Rice”
Claim · model-written summary
Pyrazosulfuron was ineffective against grasses.
- Taxon
- RiceOryza sativat0
- Treatment
- pyrazosulfurone0
- Interactor
- grassese1weed
- Outcome
- not effectivee0
- Direction
- not effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pyrazosulfuron, on the other hand, was not effective”
e1“against grasses”
t0“Dry-Seeded Rice”
Claim · model-written summary
Oxadiargyl was best for broadleaf weed control, giving 65-85% control.
- Taxon
- RiceOryza sativat0
- Treatment
- oxadiargyle0
- Interactor
- broadleaf weede0weed
- Outcome
- broadleaf weed controle0
- Direction
- beste0
- Value
- 65-85%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The best herbicide for broadleaf weed control was oxadiargyl (65-85% control)”
t0“Dry-Seeded Rice”
Claim · model-written summary
Pendimethalin and acetachlor plus bensulfuraonmethyl were ineffective for broadleaf weed control.
- Taxon
- RiceOryza sativat0
- Treatment
- pendimethalin and acetachlor + bensulfuraonmethyle0
- Interactor
- broadleaf weede1weed
- Outcome
- broadleaf weed controle1
- Direction
- not effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pendimethalin and acetachlor + bensulfuraonmethyl were not effective for this purpose”
e1“broadleaf weed control”
t0“Dry-Seeded Rice”
Claim · model-written summary
Oxadiargyl followed by ethoxysulfuron was the best weed-control combination in boro.
- Taxon
- RiceOryza sativat0
- Treatment
- oxadiargyl followed by ethoxysulfurone0
- Interactor
- weede0weed
- Outcome
- weed controle0
- Direction
- beste0
- Qualifier
- boro seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The best combination for weed control was oxadiargyl followed by ethoxysulfuron in the boro season”
t0“Dry-Seeded Rice”
Claim · model-written summary
Oxadiargyl followed by one hand weeding was the best weed-control combination in aman.
- Taxon
- RiceOryza sativat0
- Treatment
- oxadiargyl followed by a one-time hand weedinge0
- Interactor
- weede1weed
- Outcome
- weed controle1
- Direction
- beste1
- Qualifier
- aman seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“oxadiargyl followed by a one-time hand weeding in the aman season”
e1“The best combination for weed control”
t0“Dry-Seeded Rice”
Claim · model-written summary
Oxadiargyl followed by ethoxysulfuron gave 4.13 t ha(-1), a 62% higher boro yield than one hand weeding.
- Taxon
- RiceOryza sativat0
- Treatment
- oxadiargyl followed by ethoxysulfurone0
- Outcome
- yielde0
- Direction
- highere0
- Value
- 62%e0
- Qualifier
- 4.13 t ha(-1)e0
- Comparator
- partial weedy plots (hand weeded once)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the partial weedy plots (hand weeded once), oxadiargyl followed by ethoxysulfuron (4.13 t ha(-1)) provided a 62% higher yield in the boro season”
t0“Dry-Seeded Rice”
Claim · model-written summary
Oxadiargyl followed by one hand weeding gave 4.08 t ha(-1), a 37% higher aman yield than one hand weeding.
- Taxon
- RiceOryza sativat0
- Treatment
- oxadiargyl followed by a one-time hand weedinge0
- Outcome
- yielde0
- Direction
- highere0
- Value
- 37%e0
- Qualifier
- 4.08 t ha(-1)e0
- Comparator
- partial weedy plots (hand weeded once)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“oxadiargyl followed by a one-time hand weeding (4.08 t ha(-1)) provided a 37% higher yield in the aman season”
e1“Compared with the partial weedy plots (hand weeded once)”
t0“Dry-Seeded Rice”
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