Abstract
Ageratum conyzoides L. is an invasive weed that has severely infested cultivated lands and interferes with the growth of crops. In this study aqueous extracts of 50 and 100% concentration were prepared from fresh and air dried plant parts (Leaves and roots) of A. conyzoides and their allelopathic effect was observed on seed germination and seedling growth of two rice varieties namely Sava and Geru. In Sava variety, a significant reduction in seed germination, seedling length and dry weight was recorded under dry leaf extract while under fresh leaf extract seed germination and seedling length was increased at 50% concentration as compared to control. In Geru variety both fresh and dry leaf extracts resulted in decreased seed germination and seedling growth with increasing concentration. Similar patterns were recorded for fresh and dry root extracts. The inhibitory effect of leaf extracts was more pronounced than root extract and overall dry aqueous extracts of leaf and root were more inhibitory than fresh aqueous extracts. Among varieties, Sava was least affected as compared to the Geru. This study indicated that A. conyzoides exert allelopathic effect towards rice crop by releasing water soluble phytochemicals.
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Claims 8
Claim · model-written summary
In rice variety Sava, dry leaf extract of A. conyzoides significantly reduced seed germination, seedling length and dry weight.
- Taxon
- Rice
Oryza sativat0 - Material
- Savae0
- Treatment
- dry leaf extracte0
- Interactor
- Ageratum conyzoides
Ageratum conyzoidest0weed - Outcome
- seed germination, seedling length and dry weighte0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In Sava variety, a significant reduction in seed germination, seedling length and dry weight was recorded under dry leaf extract”
t0“Allelopathic Interference of Ageratum conyzoides L. against Rice Varieties”
Claim · model-written summary
In rice variety Sava, fresh leaf extract at 50% concentration increased seed germination and seedling length compared with the control.
- Taxon
- RiceOryza sativat0
- Material
- Savae1
- Treatment
- fresh leaf extracte1
- Interactor
- Ageratum conyzoidesAgeratum conyzoidest0weed
- Outcome
- seed germination and seedling lengthe1
- Direction
- increasede1
- Qualifier
- 50% concentratione1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In Sava variety, a significant reduction in seed germination, seedling length and dry weight was recorded under dry leaf extract while under fresh leaf extract seed germination and seedling length was increased at 50% concentration as compared to control”
t0“Allelopathic Interference of Ageratum conyzoides L. against Rice Varieties”
Claim · model-written summary
In rice variety Geru, both fresh and dry leaf extracts decreased seed germination and seedling growth as concentration increased.
- Taxon
- RiceOryza sativat0
- Material
- Gerue2
- Treatment
- fresh and dry leaf extractse2
- Interactor
- Ageratum conyzoidesAgeratum conyzoidest0weed
- Outcome
- seed germination and seedling growthe2
- Direction
- decreasede2
- Qualifier
- with increasing concentratione2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“In Geru variety both fresh and dry leaf extracts resulted in decreased seed germination and seedling growth with increasing concentration”
t0“Allelopathic Interference of Ageratum conyzoides L. against Rice Varieties”
Claim · model-written summary
Fresh and dry root extracts of A. conyzoides produced patterns similar to those of the leaf extracts.
- Taxon
- RiceOryza sativat0
- Treatment
- fresh and dry root extractse3
- Interactor
- Ageratum conyzoidesAgeratum conyzoidest0weed
- Outcome
- Similar patternse3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Similar patterns were recorded for fresh and dry root extracts”
t0“Allelopathic Interference of Ageratum conyzoides L. against Rice Varieties”
Claim · model-written summary
The inhibitory effect of A. conyzoides leaf extracts on rice was more pronounced than that of root extract.
- Taxon
- RiceOryza sativat0
- Treatment
- leaf extractse4
- Interactor
- Ageratum conyzoidesAgeratum conyzoidest0weed
- Outcome
- inhibitory effecte4
- Direction
- more pronouncede4
- Comparator
- root extracte4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The inhibitory effect of leaf extracts was more pronounced than root extract”
t0“Allelopathic Interference of Ageratum conyzoides L. against Rice Varieties”
Claim · model-written summary
Overall, dry aqueous extracts of leaf and root were more inhibitory to rice than fresh aqueous extracts.
- Taxon
- RiceOryza sativat0
- Treatment
- dry aqueous extracts of leaf and roote5
- Interactor
- Ageratum conyzoidesAgeratum conyzoidest0weed
- Outcome
- inhibitorye5
- Direction
- more inhibitorye5
- Comparator
- fresh aqueous extractse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“overall dry aqueous extracts of leaf and root were more inhibitory than fresh aqueous extracts”
t0“Allelopathic Interference of Ageratum conyzoides L. against Rice Varieties”
Claim · model-written summary
Rice variety Sava was least affected by the extracts compared with variety Geru.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Sava was least affected as compared to the Geru”
t0“Allelopathic Interference of Ageratum conyzoides L. against Rice Varieties”
Claim · model-written summary
The authors conclude that A. conyzoides exerts an allelopathic effect on rice by releasing water soluble phytochemicals.
- Taxon
- riceOryza sativae7
- Interactor
- A. conyzoidesAgeratum conyzoidese7weed
- Compound
- water soluble phytochemicalse7
- Outcome
- allelopathic effecte7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“A. conyzoides exert allelopathic effect towards rice crop by releasing water soluble phytochemicals”
The same questions in other papers
botanical · Ageratum conyzoides · 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.