Abstract
ABSTRACT: Chemical weed control and nitrogen fertilization are common practices in irrigated rice crops. Nitrogen is an essential element for growth and development of plants and may influence herbicide selectivity. In this study, herbicide selectivity was evaluated according to nitrogen application time in irrigated rice crops. The experiment was conducted in the field in a split-plot design with four replications. Treatments were arranged in a factorial scheme: factor A consisted of different nitrogen application times (without nitrogen, all nitrogen applied before flooding, half of the nitrogen rate applied before flooding and the other half after flooding, all nitrogen applied after flooding); factor B consisted of the application of the herbicides quinclorac, bentazon, bispyribac-sodium and carfentrazone-ethyl. Nitrogen application increased plant height and dry matter accumulation in rice plants, while nitrogen application before flooding and split N applications were favorable to the crop. The herbicide bispyribac-sodium causes the greatest injury and the greatest reduction in rice plant height, followed by bentazon and carfentrazone-ethyl, while the lowest injury and the highest grain yield were caused by the application of quinclorac.
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Claims 6
Claim · model-written summary
Nitrogen application increased rice plant height and dry matter accumulation.
- Taxon
- rice plants
Oryza sativae0 - Treatment
- Nitrogen applicatione0
- Outcome
- plant height and dry matter accumulatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen application increased plant height and dry matter accumulation in rice plants”
Claim · model-written summary
Nitrogen before flooding and split applications were favorable to rice.
- Taxon
- riceOryza sativat0
- Treatment
- nitrogen application before flooding and split N applicationse0
- Outcome
- favorable to the crope0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nitrogen application before flooding and split N applications were favorable to the crop”
t0“Rice”
Claim · model-written summary
Bispyribac-sodium caused the greatest rice injury.
- Taxon
- RiceOryza sativat0
- Treatment
- bispyribac-sodiume0
- Outcome
- injurye0
- Direction
- greateste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The herbicide bispyribac-sodium causes the greatest injury”
t0“Rice”
Claim · model-written summary
Bispyribac-sodium caused the greatest reduction in rice plant height.
- Taxon
- riceOryza sativae0
- Treatment
- bispyribac-sodiume0
- Outcome
- rice plant heighte0
- Direction
- greatest reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“bispyribac-sodium causes the greatest injury and the greatest reduction in rice plant height”
Claim · model-written summary
Quinclorac caused the lowest rice injury.
- Taxon
- RiceOryza sativat0
- Treatment
- application of quinclorace0
- Outcome
- injurye0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the lowest injury and the highest grain yield were caused by the application of quinclorac”
t0“Rice”
Claim · model-written summary
Quinclorac produced the highest rice grain yield.
- Taxon
- RiceOryza sativat0
- Treatment
- application of quinclorace0
- Outcome
- grain yielde0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest grain yield were caused by the application of quinclorac”
t0“Rice”
The same questions in other papers
quinclorac · crop injury · Oryza sativa (rice)Positive and negative results
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bispyribac-sodium · crop injury · Oryza sativa (rice)Positive and negative results
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1,802 papers in the same direction as this paper · 193 in the opposite direction · 49 reporting no difference from an alternative
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See all 2,045 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.