Abstract
A field experiment was conducted during the rainy seasons of 2012 and 2013 at research farm of Regional Sta- tion, Indian Agricultural Research Institute, Pusa, Samastipur, Bihar, to evaluate suitable herbicide options for controlling weeds in transplanted aromatic rice (Oryza sativa L.). The experiment comprised 8 treatments, viz. pendimethalin 30 EC pre-emergence (PE) @ 1.0 kg a.i./ha, butachlor 50 EC (PE) @ 1.5 kg a.i./ha, oxydiargyl 80 WP (PE) @ 0.10 kg a.i./ha, bispyribac-sodium 10 SC post-emergence (PoE) @ 0.025 kg a.i./ha, ethoxysulfuron 15 WDG (PoE) @ 0.018 kg a.i./ha, pendimethalin (PE) @ 0.75 kg a.i./ha followed by (fb) bispyribac-sodium 10 SC (PoE) @ 0.025 kg a.i./ha, weed free and a weedy check. Sequential application of pendimethalin (PE) fb bispyribac-sodium (PoE) was observed to reduce the Jungle rice [Echinochloa colona (L.) Link] density by 87.6 and 82.7% as compared to weedy check at 30 and 90 days after transplanting (DAT) of crop respectively. At the same time, the density of bermuda grass [Cynodon dactylon (L.) Pers.], false daisy [Eclipta alba (L.) Hassk.] and barnyard grass [(Echinochloa crussgalli (L.) Beauv] were also reduced significantly by this treatment. Single appli- cation of ethoxysulfuron (PoE) significantly reduced the population of smallflower umbrella sedge (Cyperus difformis L.) at all growth stages of rice as compared to the other herbicide used. Among the herbicide treatments, significant higher weed-control efficiency (WCE) was recorded with the sequential application of pendimethalin (PE) fb bispyribac-sodium (PoE) to the tune 92.4 and 88.2%, respectively as compared to weedy check at 30 and 90 DAT of crop. Minimum total weed dry biomass (21.1 g/m2) and highest weed-control efficiency (84.8%) were also recorded with application of pendimethalin (PE) fb bispyribac-sodium (PoE). Sequential application of pre- and post-emergence herbicide had significant effect on yield and yield attributes of aromatic rice as compared to single application of pre- or post-emergence herbicides.
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Claims 11
Claim · model-written summary
Sequential pendimethalin then bispyribac-sodium reduced jungle rice density by 87.6% at 30 DAT.
- Taxon
- rice
Oryza sativat0 - Treatment
- Sequential application of pendimethalin (PE) fb bispyribac-sodium (PoE)e0
- Interactor
- Echinochloa colona
Echinochloa colonae0weed - Outcome
- Jungle rice [Echinochloa colona (L.) Link] densitye0
- Direction
- reducee0
- Value
- 87.6e0
- Qualifier
- 30 and 90 days after transplanting (DAT)e0
- Comparator
- weedy checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sequential application of pendimethalin (PE) fb bispyribac-sodium (PoE) was observed to reduce the Jungle rice [Echinochloa colona (L.) Link] density by 87.6 and 82.7% as compared to weedy check at 30 and 90 days after transplanting (DAT) of crop respectively.”
t0“rice”
Claim · model-written summary
Sequential herbicide application reduced jungle rice density by 82.7% at 90 DAT.
- Taxon
- riceOryza sativat0
- Interactor
- Echinochloa colonaEchinochloa colonae0weed
- Outcome
- Jungle rice [Echinochloa colona (L.) Link] densitye0
- Direction
- reducee0
- Value
- 82.7%e0
- Comparator
- weedy checke0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduce the Jungle rice [Echinochloa colona (L.) Link] density by 87.6 and 82.7% as compared to weedy check at 30 and 90 days after transplanting (DAT) of crop respectively.”
t0“rice”
Claim · model-written summary
The sequential treatment significantly reduced bermuda grass density.
- Taxon
- riceOryza sativat0
- Treatment
- this treatmente0
- Interactor
- Cynodon dactylon
Cynodon dactylone0weed - Outcome
- density of bermuda grasse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the density of bermuda grass [Cynodon dactylon (L.) Pers.], false daisy [Eclipta alba (L.) Hassk.] and barnyard grass [(Echinochloa crussgalli (L.) Beauv] were also reduced significantly by this treatment.”
t0“rice”
Claim · model-written summary
The sequential treatment significantly reduced false daisy density.
- Taxon
- riceOryza sativat0
- Treatment
- this treatmente0
- Interactor
- Eclipta alba
.jpg?width=60)
Eclipta albae0weed - Outcome
- false daisye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“the density of bermuda grass [Cynodon dactylon (L.) Pers.], false daisy [Eclipta alba (L.) Hassk.] and barnyard grass [(Echinochloa crussgalli (L.) Beauv] were also reduced significantly by this treatment.”
t0“rice”
Claim · model-written summary
The sequential treatment significantly reduced barnyard grass density.
- Taxon
- riceOryza sativat0
- Treatment
- this treatmente0
- Interactor
- Echinochloa crussgallie0weed
- Outcome
- barnyard grasse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barnyard grass [(Echinochloa crussgalli (L.) Beauv] were also reduced significantly by this treatment.”
t0“rice”
Claim · model-written summary
Ethoxysulfuron reduced smallflower umbrella sedge at all rice stages.
- Taxon
- riceOryza sativae0
- Treatment
- ethoxysulfuron (PoE)e0
- Interactor
- Cyperus difformis
Cyperus difformise0weed - Outcome
- population of smallflower umbrella sedgee0
- Direction
- reducede0
- Comparator
- other herbicide usede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Single appli- cation of ethoxysulfuron (PoE) significantly reduced the population of smallflower umbrella sedge (Cyperus difformis L.) at all growth stages of rice as compared to the other herbicide used.”
Claim · model-written summary
Sequential treatment reached 92.4% weed control efficiency at 30 DAT.
- Taxon
- riceOryza sativat0
- Treatment
- sequential application of pendimethalin (PE) fb bispyribac-sodium (PoE)e0
- Interactor
- weede0weed
- Outcome
- weed-control efficiency (WCE)e0
- Value
- 92.4e0
- Comparator
- weedy checke0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“weed-control efficiency (WCE) was recorded with the sequential application of pendimethalin (PE) fb bispyribac-sodium (PoE) to the tune 92.4 and 88.2%, respectively as compared to weedy check at 30 and 90 DAT of crop.”
t0“rice”
Claim · model-written summary
Sequential treatment reached 88.2% weed control efficiency at 90 DAT.
- Taxon
- riceOryza sativat0
- Treatment
- sequential application of pendimethalin (PE) fb bispyribac-sodium (PoE)e0
- Interactor
- weede0weed
- Outcome
- weed-control efficiency (WCE)e0
- Value
- 88.2%e0
- Comparator
- weedy checke0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“weed-control efficiency (WCE) was recorded with the sequential application of pendimethalin (PE) fb bispyribac-sodium (PoE) to the tune 92.4 and 88.2%, respectively as compared to weedy check at 30 and 90 DAT of crop.”
t0“rice”
Claim · model-written summary
Sequential treatment gave minimum total weed dry biomass of 21.1 g/m2.
- Taxon
- riceOryza sativat0
- Treatment
- application of pendimethalin (PE) fb bispyribac-sodium (PoE)e0
- Interactor
- weede0weed
- Outcome
- total weed dry biomasse0
- Direction
- Minimume0
- Value
- 21.1 g/m2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Minimum total weed dry biomass (21.1 g/m2) and highest weed-control efficiency (84.8%) were also recorded with application of pendimethalin (PE) fb bispyribac-sodium (PoE).”
t0“rice”
Claim · model-written summary
Sequential treatment gave highest weed control efficiency of 84.8%.
- Taxon
- riceOryza sativat0
- Treatment
- application of pendimethalin (PE) fb bispyribac-sodium (PoE)e0
- Interactor
- weede0weed
- Outcome
- weed-control efficiencye0
- Direction
- higheste0
- Value
- 84.8%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Minimum total weed dry biomass (21.1 g/m2) and highest weed-control efficiency (84.8%) were also recorded with application of pendimethalin (PE) fb bispyribac-sodium (PoE).”
t0“rice”
Claim · model-written summary
Sequential herbicide application significantly affected aromatic rice yield and attributes compared with single applications.
- Taxon
- aromatic ricee0
- Treatment
- Sequential application of pre- and post-emergence herbicidee0
- Outcome
- yield and yield attributese0
- Comparator
- single application of pre- or post-emergence herbicidese0
Not reportedDirection
Verbatim
e0“Sequential application of pre- and post-emergence herbicide had significant effect on yield and yield attributes of aromatic rice as compared to single application of pre- or post-emergence herbicides.”
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