Abstract
Aerobic rice systems, wherein the crop is established via direct seeding in non-puddled, non-flooded fields, are among the most promising approaches for saving water and labor. However, aerobic systems are subject to much higher weed pressure than conventionally puddled transplanted rice (CPTR). Experiments were conducted for two years to develop effective and economical methods for managing weeds in aerobic rice grown by direct seeding rather than by conventional transplanting method. The proportion of mean grass-weed dry matter was 28.3% more in aerobic direct-seeded rice (ADSR) as compared to CPTR. Both weed density and dry weight were negatively correlated with rice grain yield. ADSR treatment produced yield similar to CPTR treatment when weeds were controlled effectively. Post-emergence application of bispyribac Na 25 g/ha and penoxsulam 25 g/ha could effectively control all the weeds in ADSR. Irrigation water productivity remained statistically the same in both ADSR and CPTR under the weed-free situation or when bispyribac Na herbicide was applied as post-emergence because of effective weed control in ADSR. The variation in net profitability between the ADSR and CPTR decreased with herbicide treatments, viz., Bispyribac Na, followed by penoxsulam and sequential application of pretilachlor and metsulfuron.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
Grass weed dry matter was 28.3% greater in aerobic direct-seeded rice than conventionally transplanted rice.
- Taxon
- rice
Oryza sativat0 - Interactor
- grass-weede0weed
- Outcome
- grass-weed dry mattere0
- Direction
- moree0
- Value
- 28.3%e0
- Comparator
- CPTRe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The proportion of mean grass-weed dry matter was 28.3% more in aerobic direct-seeded rice (ADSR) as compared to CPTR.”
t0“Weed Management in Aerobic Rice in Northwestern Indo-Gangetic Plains”
Claim · model-written summary
Weed density was negatively correlated with rice grain yield.
- Taxon
- riceOryza sativat0
- Interactor
- weede0weed
- Outcome
- rice grain yielde0
- Direction
- negatively correlatede0
- Qualifier
- weed densitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both weed density and dry weight were negatively correlated with rice grain yield.”
t0“Weed Management in Aerobic Rice in Northwestern Indo-Gangetic Plains”
Claim · model-written summary
Weed dry weight was negatively correlated with rice grain yield.
- Taxon
- riceOryza sativat0
- Interactor
- weede0weed
- Outcome
- rice grain yielde0
- Direction
- negatively correlatede0
- Qualifier
- dry weighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both weed density and dry weight were negatively correlated with rice grain yield.”
t0“Weed Management in Aerobic Rice in Northwestern Indo-Gangetic Plains”
Claim · model-written summary
With effective weed control, aerobic direct-seeded rice yielded similarly to conventional transplanted rice.
- Taxon
- riceOryza sativat0
- Treatment
- ADSR treatmente0
- Outcome
- yielde0
- Direction
- similare0
- Qualifier
- when weeds were controlled effectivelye0
- Comparator
- CPTR treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ADSR treatment produced yield similar to CPTR treatment when weeds were controlled effectively.”
t0“Weed Management in Aerobic Rice in Northwestern Indo-Gangetic Plains”
Claim · model-written summary
Post-emergence bispyribac Na at 25 g/ha effectively controlled weeds in aerobic rice.
- Taxon
- riceOryza sativat0
- Treatment
- bispyribac Na 25 g/hae0
- Interactor
- weedse0weed
- Outcome
- control all the weedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Post-emergence application of bispyribac Na 25 g/ha and penoxsulam 25 g/ha could effectively control all the weeds in ADSR.”
t0“Weed Management in Aerobic Rice in Northwestern Indo-Gangetic Plains”
Claim · model-written summary
Post-emergence penoxsulam at 25 g/ha effectively controlled weeds in aerobic rice.
- Taxon
- riceOryza sativat0
- Treatment
- penoxsulam 25 g/hae0
- Interactor
- weedse0weed
- Outcome
- control all the weedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Post-emergence application of bispyribac Na 25 g/ha and penoxsulam 25 g/ha could effectively control all the weeds in ADSR.”
t0“Weed Management in Aerobic Rice in Northwestern Indo-Gangetic Plains”
Claim · model-written summary
Under weed-free conditions, irrigation water productivity was statistically the same in both rice systems.
- Taxon
- riceOryza sativat0
- Treatment
- ADSRe0
- Outcome
- Irrigation water productivitye0
- Direction
- the samee0
- Qualifier
- weed-free situatione0
- Comparator
- CPTRe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation water productivity remained statistically the same in both ADSR and CPTR under the weed-free situation or when bispyribac Na herbicide was applied as post-emergence because of effective weed control in ADSR.”
t0“Weed Management in Aerobic Rice in Northwestern Indo-Gangetic Plains”
Claim · model-written summary
With post-emergence bispyribac Na, irrigation water productivity was statistically the same in both rice systems.
- Taxon
- riceOryza sativat0
- Treatment
- bispyribac Na herbicidee0
- Outcome
- Irrigation water productivitye0
- Direction
- the samee0
- Comparator
- CPTRe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation water productivity remained statistically the same in both ADSR and CPTR under the weed-free situation or when bispyribac Na herbicide was applied as post-emergence because of effective weed control in ADSR.”
t0“Weed Management in Aerobic Rice in Northwestern Indo-Gangetic Plains”
Claim · model-written summary
Herbicide treatments decreased the difference in net profitability between aerobic and transplanted rice.
- Taxon
- riceOryza sativat0
- Treatment
- herbicide treatmentse0
- Outcome
- variation in net profitabilitye0
- Direction
- decreasede0
- Comparator
- CPTRe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The variation in net profitability between the ADSR and CPTR decreased with herbicide treatments, viz., Bispyribac Na, followed by penoxsulam and sequential application of pretilachlor and metsulfuron.”
t0“Weed Management in Aerobic Rice in Northwestern Indo-Gangetic Plains”
The same questions in other papers
bispyribac · physiology: water · Oryza sativa (rice)Positive and negative results
1 reporting no difference from an alternative
- positive
herbicide · physiology: water · Oryza sativa (rice)Positive and negative results
12 reporting no difference from an alternative
- positive
- positive
- positive
9 papers more in this group
See all 13 papers →transplanting · physiology: water · Oryza sativa (rice)Positive and negative results
8 papers in the same direction as this paper · 66 reporting no difference from an alternative
- positive
- no effect
- positive
71 papers more in this group
See all 75 papers →transplanting · yield · Oryza sativa (rice)Positive and negative results
155 papers in the same direction as this paper · 922 reporting no difference from an alternative
- positive
- positive
- positive
1,074 papers more in this group
See all 1,078 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.