Abstract
Chromolaena odorata, Euphorbia heterophylla, Fleischmannia microstemon, Porophyllum ruderale and Synedrella nodiflora are five invasive plants in agrosystems in Côte d'Ivoire. They strongly influence the structure and diversity of native plant communities. In addition, they can compete for water and nutritional resources with cultivated plants, leading to a decrease in agricultural yield. This competition often occurs through the emission of allelochemicals that prevent seed germination or inhibit the development of other species. Thus, this study aims to assess the allelopathic effects of these five species on maize and rice, two crops generally used in food self-sufficiency programmes. To this end, the seed germination, root and stem growth of these crops watered with different leaf extracts of these five species were monitored in the laboratory. All five species were found to have allelopathic effects on maize and rice development. However, the action of the allelochemicals is specific to the target plant organs and increases with the concentration of the extracts. The study shows that of the five plants, C. odorata, E. heterophylla and F. microstemon are the most damaging as they have a more pronounced effect on seed germination.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 3
Claim · model-written summary
Leaf extracts of five invasive species had allelopathic effects on maize and rice development in the laboratory.
- Taxon
- maize and rice
Oryza sativa
Zea mayse1 - Treatment
- aqueous leaf extracts of five invasive speciest0
- Interactor
- five invasive speciest0weed
- Outcome
- allelopathic effectse1
- Setting
- laboratorye4
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“All five species were found to have allelopathic effects on maize and rice development”
e4“were monitored in the laboratory”
t0“Allelopathic effects of aqueous leaf extracts of five invasive species in Côte d'Ivoire on maize (Zea mays) and rice (Oryza sativa)”
Claim · model-written summary
The action of the allelochemicals on maize and rice increases with the concentration of the extracts.
- Taxon
- maize and riceOryza sativaZea mayse1
- Treatment
- concentration of the extractse2
- Outcome
- action of the allelochemicalse2
- Direction
- increasese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“All five species were found to have allelopathic effects on maize and rice development”
e2“the action of the allelochemicals is specific to the target plant organs and increases with the concentration of the extracts”
Claim · model-written summary
C. odorata, E. heterophylla and F. microstemon are the most damaging of the five species, with a more pronounced effect on seed germination.
- Taxon
- maize and riceOryza sativaZea mayse1
- Treatment
- C. odorata, E. heterophylla and F. microstemone3
- Outcome
- seed germinatione3
- Direction
- more pronounced effecte3
- Comparator
- of the five plantse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“All five species were found to have allelopathic effects on maize and rice development”
e3“of the five plants, C. odorata, E. heterophylla and F. microstemon are the most damaging as they have a more pronounced effect on seed germination”
The same questions in other papers
Chromolaena odorata · growth · Oryza sativa (rice)Positive and negative results
2 in the opposite direction
- positive
- positive
Chromolaena odorata · growth · Zea mays (maize)Positive and negative results
4 in the opposite direction
- positive
- positive
- positive
1 paper more in this group
See all 5 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.