Abstract
SUMMARY Weed management in rice depends on establishment method and proper selection of herbicide. A field experiment was conducted during dry seasons of 2013 and 2014 to develop a robust strategy for effective weed management in aerobic rice system for tropical rice belts. The efficacy of post-emergent herbicides bispyribac-sodium, azimsulfuron and flucetosulfuron were evaluated under different rice establishment methods (row sowing, spot seeding and broadcasting). Grass weed species constituted 58–68% of the total weed density across the establishment methods in the weedy check treatment. The total weed density and weed biomass were lowest in spot seeding with azimsulfuron (35 g active ingredient (a.i.) ha −1 ) 30 and 60 days after sowing. Among herbicides, use of azimsulfuron caused the highest grain yield (5.2 Mg ha −1 ), realizing 72% increase in grain yield over the weedy check. Yields in row sowing and spot seeding were similar and the same was verified when comparing yields in plots treated with bispyribac-sodium and azimsulfuron. Based on our findings and considering both weed presence and grain yield, azimsulfuron in spot seeding can be recommended in aerobic rice.
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Claims 6
Claim · model-written summary
Grass weed species constituted 58-68% of the total weed density across establishment methods in the weedy check.
- Taxon
- RICE
Oryza sativat0 - Interactor
- Grass weed speciese0weed
- Outcome
- total weed densitye0
- Value
- 58–68%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RICE”
e0“Grass weed species constituted 58–68% of the total weed density across the establishment methods in the weedy check treatment”
Claim · model-written summary
Total weed density and weed biomass were lowest in spot seeding with azimsulfuron.
- Taxon
- RICEOryza sativat0
- Treatment
- spot seeding with azimsulfurone0
- Interactor
- weede0weed
- Outcome
- total weed density and weed biomasse0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RICE”
e0“The total weed density and weed biomass were lowest in spot seeding with azimsulfuron”
Claim · model-written summary
Azimsulfuron caused the highest grain yield among herbicides, a 72% increase over the weedy check.
- Taxon
- RICEOryza sativat0
- Treatment
- azimsulfurone0
- Outcome
- grain yielde0
- Direction
- higheste0
- Value
- 72%e1
- Comparator
- weedy checke1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RICE”
e0“use of azimsulfuron caused the highest grain yield”
e1“realizing 72% increase in grain yield over the weedy check”
Claim · model-written summary
Yields in row sowing and spot seeding were similar.
- Taxon
- RICEOryza sativat0
- Treatment
- spot seedinge0
- Outcome
- Yieldse0
- Direction
- similare0
- Comparator
- row sowinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RICE”
e0“Yields in row sowing and spot seeding were similar”
Claim · model-written summary
Yields in plots treated with bispyribac-sodium and azimsulfuron were similar.
- Taxon
- RICEOryza sativat0
- Treatment
- bispyribac-sodiume0
- Outcome
- yieldse0
- Direction
- no_changeinferrede0
- Comparator
- azimsulfurone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RICE”
e0“comparing yields in plots treated with bispyribac-sodium and azimsulfuron”
Claim · model-written summary
Azimsulfuron in spot seeding can be recommended in aerobic rice.
- Taxon
- riceOryza sativae0
- Outcome
- azimsulfuron in spot seedinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“RICE”
e0“azimsulfuron in spot seeding can be recommended in aerobic rice”
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See all 33 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.