Abstract
A field experiment was conducted during the rainy (kharif) seasons of 2017 and 2018 at Regional Station of the ICAR-Indian Agricultural Research Institute, Pusa, Samastipur, Bihar, to study the effect of herbicides in controlling mixed weed flora in direct-seeded rice (Oryza sativa L.). The experimental results revealed that, the alone and sequential application of herbicides significantly reduced the weed density and biomass of complex weed flora. The growth and yield attributes, viz. plant height at maturity, effective tillers/m2 , 1,000grain weight, grains/panicle and panicle length, were significantly influenced by application of herbicides. Weed-free condition resulted in significantly highest grain yield (4.49 t/ha). Among different herbicidal treatments, application of pendimethalin @ 1,000 ml/ha followed by (fb) tank-mix application of bispyribac sodium (25 g/ha) + pyrazosulfuron (15 g/ha) resulted in higher plant height (110.7 cm), higher number of effective tillers (320.0/m2 ), grains/panicle (132.2), ear length (29.8 cm), grain yield (4.49 t/ha), net returns (` 70,600/ha) and benefit : cost ratio (1.67), which was superior to rest of the treatments. Application of pendimethalin (1,000 ml/ha) fb tank-mix application of bispyribac sodium (25 g/ha) + pyrazosulfuron (15 g/ha) significantly reduced the weed density (56.8/m2 ) and weed biomass (26.6 g/m2 ).
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Claims 12
Claim · model-written summary
Herbicide applications significantly reduced weed density and biomass.
- Taxon
- rice
Oryza sativat0 - Treatment
- alone and sequential application of herbicidese0
- Interactor
- weed florae0weed
- Outcome
- weed density and biomasse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the alone and sequential application of herbicides significantly reduced the weed density and biomass of complex weed flora”
t0“rice (Oryza sativa)”
Claim · model-written summary
Herbicide application significantly influenced rice growth and yield attributes.
- Taxon
- riceOryza sativat0
- Treatment
- application of herbicidese0
- Outcome
- plant height at maturity, effective tillers/m2 , 1,000grain weighte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant height at maturity, effective tillers/m2 , 1,000grain weight, grains/panicle and panicle length, were significantly influenced by application of herbicides”
t0“rice (Oryza sativa)”
Claim · model-written summary
Weed-free conditions yielded the highest grain yield.
- Taxon
- riceOryza sativat0
- Treatment
- Weed-free conditione0
- Outcome
- grain yielde0
- Direction
- higheste0
- Value
- 4.49 t/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weed-free condition resulted in significantly highest grain yield (4.49 t/ha)”
t0“rice (Oryza sativa)”
Claim · model-written summary
The sequential treatment produced plant height.
- Taxon
- riceOryza sativat0
- Treatment
- pendimethalin @ 1,000 ml/ha followed by (fb) tank-mix application of bispyribac sodium (25 g/ha) + pyrazosulfuron (15 g/ha)e0
- Outcome
- plant heighte0
- Direction
- highere0
- Value
- 110.7 cme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of pendimethalin @ 1,000 ml/ha followed by (fb) tank-mix application of bispyribac sodium (25 g/ha) + pyrazosulfuron (15 g/ha) resulted in higher plant height (110.7 cm)”
t0“rice (Oryza sativa)”
Claim · model-written summary
The sequential treatment produced effective tillers.
- Taxon
- riceOryza sativat0
- Outcome
- effective tillerse0
- Direction
- highere0
- Value
- 320.0/m2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher number of effective tillers (320.0/m2 )”
t0“rice (Oryza sativa)”
Claim · model-written summary
The sequential treatment produced grains/panicle.
- Taxon
- riceOryza sativat0
- Outcome
- grains/paniclee0
- Value
- 132.2e0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grains/panicle (132.2)”
t0“rice (Oryza sativa)”
Claim · model-written summary
The sequential treatment produced ear length.
- Taxon
- riceOryza sativat0
- Outcome
- ear lengthe0
- Value
- 29.8 cme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ear length (29.8 cm)”
t0“rice (Oryza sativa)”
Claim · model-written summary
The sequential treatment produced grain yield.
- Taxon
- riceOryza sativat0
- Outcome
- grain yielde0
- Value
- 4.49 t/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ear length (29.8 cm), grain yield (4.49 t/ha)”
t0“rice (Oryza sativa)”
Claim · model-written summary
The sequential treatment produced net returns.
- Taxon
- riceOryza sativat0
- Outcome
- net returnse0
- Value
- ` 70,600/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“net returns (` 70,600/ha)”
t0“rice (Oryza sativa)”
Claim · model-written summary
The sequential treatment produced benefit : cost ratio.
- Taxon
- riceOryza sativat0
- Outcome
- benefit : cost ratioe0
- Value
- 1.67e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“benefit : cost ratio (1.67)”
t0“rice (Oryza sativa)”
Claim · model-written summary
The sequential treatment reduced weed density.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significantly reduced the weed density (56.8/m2 )”
t0“rice (Oryza sativa)”
Claim · model-written summary
The sequential treatment reduced weed biomass.
- Taxon
- riceOryza sativat0
- Interactor
- weede0weed
- Outcome
- weed biomasse0
- Value
- 26.6 g/m2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“weed biomass (26.6 g/m2 )”
t0“rice (Oryza sativa)”
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