Abstract
When the rice straw mulched, the inhibition of weed growth was observed in the paddy field. If we use these allelopathic effect of decreased weed establishment, we can save labor, and protect environment. Aqueous extract of rice straw were bioassayed using water foxtail seeds to investigate chair effects on the germination and the growth, and to identify allelopathic compounds. The major results obtained were summarized as follows : Aqueous extract was fractioned by solvent, among various fractions, II-3, II-4 fractions inhibited the coleoptile and the radical of water foxtail, by 100%, respectively. There were fumaric acid and 4 unknown organic acids. Seven organic acids including fumaric acid inhibited the growth and germination of water foxtail in M solution. One of the most effective allelopathic compounds in rice straw was identified the unknown organic acid, as molecular weight 253, by GC/MS.
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Claims 4
Claim · model-written summary
Rice straw mulch inhibited weed growth in a paddy field.
- Taxon
- rice
Oryza sativae0 - Treatment
- rice straw mulchede0
- Interactor
- weede0weed
- Outcome
- weed growthe0
- Direction
- inhibitione0
- Setting
- paddy fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the rice straw mulched, the inhibition of weed growth was observed in the paddy field”
Claim · model-written summary
Rice straw extract fractions II-3 and II-4 inhibited water foxtail coleoptile and radical by 100%.
- Taxon
- riceOryza sativat0
- Treatment
- II-3, II-4 fractionse0
- Interactor
- water foxtaile0weed
- Outcome
- coleoptile and the radical of water foxtaile0
- Direction
- inhibitede0
- Value
- 100%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“II-3, II-4 fractions inhibited the coleoptile and the radical of water foxtail, by 100%, respectively”
t0“Rice Straw”
Claim · model-written summary
Seven organic acids including fumaric acid inhibited water foxtail growth and germination.
- Taxon
- riceOryza sativat0
- Treatment
- Seven organic acids including fumaric acide0
- Interactor
- water foxtaile0weed
- Outcome
- growth and germination of water foxtaile0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seven organic acids including fumaric acid inhibited the growth and germination of water foxtail in M solution”
t0“Rice Straw”
Claim · model-written summary
GC/MS identified an unknown organic acid of molecular weight 253 as a highly effective rice straw allelopathic compound.
- Taxon
- riceOryza sativae0
- Outcome
- unknown organic acide0
- Value
- molecular weight 253e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“One of the most effective allelopathic compounds in rice straw was identified the unknown organic acid, as molecular weight 253, by GC/MS”
The same questions in other papers
organic acid · growth · Oryza sativa (rice)Positive and negative results
4 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
2 papers more in this group
See all 6 papers →fumaric acid · growth · Oryza sativa (rice)Results agree
1 paper in the same direction as this paper
- positive
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.