Abstract
The competitive abilities of rice cultivars against barnyardgrass were examined under dry direct-seeded condition, and competition aspects between rice and barnyardgrass were studied under different barnyardgrass densities and nitrogen level conditions. Shindongjon, Dongan, and Munjang were highly comptetitive cultivars and Geumnam was the lowest competitive cultivar among 20 rice cultivars. As barnyardgrass density increased, competitive ability of rice cultivars was decreased except Shindongjin, the most competitive cultivar. As nitrogen application levels increased, plant height and fresh weight of rice increased and competitive ability of rice cultivars was slightly decreased, but those of Shindongjin was not decreased. Plant height and fresh weight of barnyardgrass were lower in the Shindongjin cultivar plot than in the Geumnam cultivar plot
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 6
Claim · model-written summary
Shindongjon, Dongan and Munjang were highly competitive rice cultivars.
- Taxon
- Rice
Oryza sativat0 - Material
- Shindongjon, Dongan, and Munjange0
- Interactor
- barnyardgrass
Echinochloa crus-gallie1weed - Outcome
- highly comptetitive cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shindongjon, Dongan, and Munjang were highly comptetitive cultivars”
t0“of Rice Cultivars”
e1“rice cultivars against barnyardgrass”
Claim · model-written summary
Geumnam was the least competitive of 20 rice cultivars.
- Taxon
- riceOryza sativae0
- Material
- Geumname0
- Interactor
- barnyardgrassEchinochloa crus-gallie1weed
- Outcome
- lowest competitive cultivare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Geumnam was the lowest competitive cultivar among 20 rice cultivars”
e1“rice cultivars against barnyardgrass”
Claim · model-written summary
Increasing barnyardgrass density decreased rice cultivar competitive ability except in Shindongjin.
- Taxon
- riceOryza sativae0
- Interactor
- barnyardgrassEchinochloa crus-gallie0weed
- Outcome
- competitive ability of rice cultivarse0
- Direction
- decreasede0
- Qualifier
- except Shindongjine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As barnyardgrass density increased, competitive ability of rice cultivars was decreased except Shindongjin, the most competitive cultivar.”
Claim · model-written summary
Increasing nitrogen application increased rice plant height and fresh weight.
- Taxon
- riceOryza sativae0
- Treatment
- nitrogen application levelse0
- Outcome
- plant height and fresh weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As nitrogen application levels increased, plant height and fresh weight of rice increased”
Claim · model-written summary
Increasing nitrogen application slightly decreased rice cultivar competitive ability, except in Shindongjin.
- Taxon
- riceOryza sativae0
- Treatment
- nitrogen application levelse0
- Interactor
- barnyardgrassEchinochloa crus-gallie1weed
- Outcome
- competitive ability of rice cultivarse0
- Direction
- slightly decreasede0
- Qualifier
- Shindongjin was not decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As nitrogen application levels increased, plant height and fresh weight of rice increased and competitive ability of rice cultivars was slightly decreased, but those of Shindongjin was not decreased.”
e1“rice cultivars against barnyardgrass”
Claim · model-written summary
Barnyardgrass height and fresh weight were lower in Shindongjin plots than Geumnam plots.
- Taxon
- Shindongjine0
- Material
- Shindongjine0
- Interactor
- barnyardgrassEchinochloa crus-gallie0weed
- Outcome
- Plant height and fresh weight of barnyardgrasse0
- Direction
- lowere0
- Comparator
- Geumnam cultivar plote0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant height and fresh weight of barnyardgrass were lower in the Shindongjin cultivar plot than in the Geumnam cultivar plot”
The same questions in other papers
nitrogen · growth · Oryza sativa (rice)Positive and negative results
401 papers in the same direction as this paper · 101 in the opposite direction · 8 reporting no difference from an alternative
- negative
- negative
- negative
507 papers more in this group
See all 511 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.