Abstract
Datura stramonium extracts have allelopathic properties. The study was conducted to investigate the allelopathic effects of D. stramonium weed on seed germination, early seedling growth and dry biomass of crop plants (Triticum aestivum and Vigna unguiculata). Laboratory and greenhouse trials were arranged as completely randomised design and the field pot experiment was arranged as a randomised complete block design. Aqueous leaf extracts of D. stramonium at 2, 4, 6 and 8% concentrations were applied to determine their effects on seed germination, early seedling growth of crops under laboratory, field and greenhouse conditions. Distilled water (0%) acted as a control. Results from the study indicated that germination, shoot length and dry weight significantly decreased proportionally (p<0.001) as the concentration increased from 2 to 8%. The results showed that D. stramonium has allelopathic effects on wheat and cowpeas, hence cannot be used as a bio herbicide to control Tagetes minuta and Amaranthus hybridus on the selected crops since it is non selective to the crops studied. There is therefore need for further research on screening of arable crops against the allelopathic effects of D. stramonium. This will help to identify arable crops which are not negatively affected by allelochemicals from D. stramonium weed so that it can be used as a selective bio herbicide against other weeds. Key words: Allelopathy, aqueous leaf extract, Datura stramonium, Triticum aestivum, Vigna unguiculata.
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Claims 5
Claim · model-written summary
Increasing D. stramonium leaf extract concentration from 2 to 8% significantly decreased crop germination.
- Taxon
- cowpeas (Vigna unguiculata L.) and wheat (Triticum aestivum L.)
Vigna unguiculata
Triticum aestivumt0 - Treatment
- Aqueous leaf extracts of D. stramonium at 2, 4, 6 and 8% concentrationse1
- Interactor
- D. stramonium
.jpg?width=60)
Datura stramoniume1weed - Outcome
- germinatione0
- Direction
- decreasede0
- Value
- p<0.001e0
- Comparator
- Distilled water (0%)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“germination, shoot length and dry weight significantly decreased proportionally (p<0.001) as the concentration increased from 2 to 8%”
e1“Aqueous leaf extracts of D. stramonium at 2, 4, 6 and 8% concentrations”
e2“Distilled water (0%) acted as a control.”
t0“cowpeas (Vigna unguiculata L.) and wheat (Triticum aestivum L.)”
Claim · model-written summary
Increasing extract concentration significantly decreased crop shoot length.
- Taxon
- cowpeas (Vigna unguiculata L.) and wheat (Triticum aestivum L.)Vigna unguiculataTriticum aestivumt0
- Treatment
- Aqueous leaf extracts of D. stramonium at 2, 4, 6 and 8% concentrationse1
- Interactor
- D. stramoniumDatura stramoniume1weed
- Outcome
- shoot lengthe0
- Direction
- decreasede0
- Comparator
- Distilled water (0%)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“germination, shoot length and dry weight significantly decreased proportionally (p<0.001) as the concentration increased from 2 to 8%”
e1“Aqueous leaf extracts of D. stramonium at 2, 4, 6 and 8% concentrations”
e2“Distilled water (0%) acted as a control.”
t0“cowpeas (Vigna unguiculata L.) and wheat (Triticum aestivum L.)”
Claim · model-written summary
Increasing extract concentration significantly decreased crop dry weight.
- Taxon
- cowpeas (Vigna unguiculata L.) and wheat (Triticum aestivum L.)Vigna unguiculataTriticum aestivumt0
- Treatment
- Aqueous leaf extracts of D. stramonium at 2, 4, 6 and 8% concentrationse1
- Interactor
- D. stramoniumDatura stramoniume1weed
- Outcome
- dry weighte0
- Direction
- decreasede0
- Comparator
- Distilled water (0%)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“germination, shoot length and dry weight significantly decreased proportionally (p<0.001) as the concentration increased from 2 to 8%”
e1“Aqueous leaf extracts of D. stramonium at 2, 4, 6 and 8% concentrations”
e2“Distilled water (0%) acted as a control.”
t0“cowpeas (Vigna unguiculata L.) and wheat (Triticum aestivum L.)”
Claim · model-written summary
The authors advise against using D. stramonium as a bioherbicide on these crops because it also harms the crops.
- Taxon
- wheat and cowpeasVigna unguiculataTriticum aestivume1
- Interactor
- D. stramoniumDatura stramoniume1weed
- Outcome
- cannot be used as a bio herbicidee0
- Qualifier
- non selective to the crops studiede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cannot be used as a bio herbicide to control Tagetes minuta and Amaranthus hybridus on the selected crops since it is non selective to the crops studied”
t0“cowpeas (Vigna unguiculata L.) and wheat (Triticum aestivum L.)”
e1“D. stramonium has allelopathic effects on wheat and cowpeas”
Claim · model-written summary
The authors recommend screening arable crops for susceptibility to D. stramonium allelopathy.
- Taxon
- arable cropse0
- Interactor
- D. stramoniumDatura stramoniume0weed
- Outcome
- screening of arable crops against the allelopathic effects of D. stramoniume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“further research on screening of arable crops against the allelopathic effects of D. stramonium”
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See all 435 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.