Abstract
In order to select botanical herbicides to Bidens alba,aqueous extracts from the leaves of 12 species,which were reported with allelopathy or potential activity of weed inhibition,were used to spray Bidens alba seedlings.The results showed that all of the leaf aqueous extracts from 12 species had significant inhibition effects on the growth of Bidens alba seedlings(P0.05) with synthetical effects(SE)≤-0.2.The inhibition strength was in order as: Eupatorium catariumAgeratum conyzoidesAlocasia macrorrhizaSolanum torvumLantana camaraMikania micranthaBroussonetia papyiferaWedelia trilobataIpomoea trilobaPueraria lobataPaederia scandensIpomoea cairica.The 0.04 g DW mL-1 aqueous extracts from the leaves of Eupatorium catarium could cause death of Bidens alba seedlings.The aqueous extracts from the stems of Eupatorium catarium and Ageratum conyzoides also had significant inhibition effects on the growth of Bidens alba seedlings(P0.05),but which inhibition effects were lower than those from leaves.The analysis of regression showed that Bidens alba seedling growth negatively correlated with the concentration of aqueous extracts from the leaves of Eupatorium catarium(R20.85).The biomass of Bidens alba significantly decreased with increasing of the concentration of aqueous extracts.It suggested that Eupatorium catarium and Ageratum conyzoides could be used as natural botanical herbicide for Bidens alba due to their low concentration effect and wide availability.
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Claims 9
Claim · model-written summary
Leaf extracts from all 12 species significantly inhibited Bidens alba seedling growth, with synthetical effects at most -0.2.
- Taxon
- Bidens alba
_(6946051637).jpg?width=60)
Bidens albae0 - Treatment
- leaf aqueous extracts from 12 speciese0
- Outcome
- growth of Bidens alba seedlingse0
- Direction
- inhibitione0
- Value
- ≤-0.2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_(6946051637).jpg?width=500)
Verbatim
e0“all of the leaf aqueous extracts from 12 species had significant inhibition effects on the growth of Bidens alba seedlings(P0.05) with synthetical effects(SE)≤-0.2”
Claim · model-written summary
The study ranked the 12 species in the reported order of inhibition strength.
- Taxon
- Bidens albaBidens albat0
- Outcome
- inhibition strengthe0
- Qualifier
- Eupatorium catariumAgeratum conyzoidesAlocasia macrorrhizaSolanum torvumLantana camaraMikania micranthaBroussonetia papyiferaWedelia trilobataIpomoea trilobaPueraria lobataPaederia scandensIpomoea cairicae0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The inhibition strength was in order as: Eupatorium catariumAgeratum conyzoidesAlocasia macrorrhizaSolanum torvumLantana camaraMikania micranthaBroussonetia papyiferaWedelia trilobataIpomoea trilobaPueraria lobataPaederia scandensIpomoea cairica.”
t0“Bidens alba”
Claim · model-written summary
Eupatorium catarium leaf extracts at 0.04 g DW mL-1 could kill Bidens alba seedlings.
- Taxon
- Bidens albaBidens albae0
- Treatment
- 0.04 g DW mL-1 aqueous extracts from the leaves of Eupatorium catariume0
- Outcome
- death of Bidens alba seedlingse0
- Qualifier
- coulde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 0.04 g DW mL-1 aqueous extracts from the leaves of Eupatorium catarium could cause death of Bidens alba seedlings.”
Claim · model-written summary
Eupatorium catarium stem extracts significantly inhibited Bidens alba seedling growth, less than leaf extracts.
- Taxon
- Bidens albaBidens albae0
- Treatment
- aqueous extracts from the stems of Eupatorium catariume0
- Outcome
- growth of Bidens alba seedlingse0
- Direction
- inhibitione0
- Qualifier
- inhibition effects were lower than those from leavese0
- Comparator
- leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The aqueous extracts from the stems of Eupatorium catarium and Ageratum conyzoides also had significant inhibition effects on the growth of Bidens alba seedlings(P0.05),but which inhibition effects were lower than those from leaves.”
Claim · model-written summary
Ageratum conyzoides stem extracts significantly inhibited Bidens alba seedling growth, less than leaf extracts.
- Taxon
- Bidens albaBidens albae0
- Organ / stage
- stemse0
- Treatment
- Ageratum conyzoidese0
- Outcome
- growth of Bidens alba seedlingse0
- Direction
- inhibitione0
- Qualifier
- inhibition effects were lower than those from leavese0
- Comparator
- leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The aqueous extracts from the stems of Eupatorium catarium and Ageratum conyzoides also had significant inhibition effects on the growth of Bidens alba seedlings(P0.05),but which inhibition effects were lower than those from leaves.”
Claim · model-written summary
Bidens alba seedling growth correlated negatively with Eupatorium catarium leaf extract concentration, with reported R2 above 0.85.
- Taxon
- Bidens albaBidens albae0
- Treatment
- aqueous extracts from the leaves of Eupatorium catariume0
- Outcome
- seedling growthe0
- Direction
- negatively correlatede0
- Qualifier
- R20.85e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bidens alba seedling growth negatively correlated with the concentration of aqueous extracts from the leaves of Eupatorium catarium(R20.85)”
Claim · model-written summary
Bidens alba biomass significantly decreased as extract concentration increased.
- Taxon
- Bidens albaBidens albae0
- Treatment
- aqueous extractse0
- Outcome
- biomass of Bidens albae0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The biomass of Bidens alba significantly decreased with increasing of the concentration of aqueous extracts.”
Claim · model-written summary
The authors suggest Eupatorium catarium as a natural botanical herbicide for Bidens alba.
- Taxon
- Bidens albaBidens albae0
- Treatment
- Eupatorium catariume0
- Outcome
- natural botanical herbicidee0
- Qualifier
- low concentration effect and wide availabilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It suggested that Eupatorium catarium and Ageratum conyzoides could be used as natural botanical herbicide for Bidens alba due to their low concentration effect and wide availability.”
Claim · model-written summary
The authors suggest Ageratum conyzoides as a natural botanical herbicide for Bidens alba.
- Taxon
- Bidens albaBidens albae0
- Treatment
- Ageratum conyzoidese0
- Outcome
- natural botanical herbicidee0
- Qualifier
- low concentration effect and wide availabilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It suggested that Eupatorium catarium and Ageratum conyzoides could be used as natural botanical herbicide for Bidens alba due to their low concentration effect and wide availability.”
The same questions in other papers
botanical · growth · Bidens albaPositive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- 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.