Abstract
Due to increased number of herbicide resistant weeds, it is needed to explore the allelopathic potential of plants as an alternative. The research was conducted to investigate allelopathic effects of Carica papaya L. leaf powder and aqueous extract on seeds as well as pre-germinated seeds of Avena fatua L., Helianthus annuus L., Rumex dentatus L., Zea mays L. and Triticum aestivum L. on filter paper and soil in Weed Management Program Laboratory, Department of Plant and Environmental Protection at PARC Institute of Advanced Studies in Agriculture, National Agriculture Research Centre, Islamabad, Pakistan. Germination percentage (%), radicle length (cm) and plumule length (cm) were parameters observed for 'Plant leaf powder bioassay' and 'Aqueous extract method'. Most significant growth inhibition was observed in A. fatua seedlings in filter paper method. A. fatua radicle length was reduced by C. papaya aqueous extract (80%) and leaf powder (89%) bioassays. Plumule length was reduced under the influence of aqueous extract (57-73%) and powdered material (59-77%). The inhibitory effects on other test species were in sequence of H. annuus followed by Z. mays and R. dentatus. The aqueous extract showed non-significant effect on wheat seed germination, radicle and plumule growth. It is suggested that C. papaya aqueous extract can be used as source of weed management in wheat crop.
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Claims 8
Claim · model-written summary
The strongest growth inhibition occurred in A. fatua seedlings in the filter paper method.
- Taxon
- A. fatua
Avena fatuae0 - Outcome
- growth inhibitione0
- Setting
- filter paper methode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Most significant growth inhibition was observed in A. fatua seedlings in filter paper method”
Claim · model-written summary
Papaya aqueous extract reduced A. fatua radicle length by 80%.
- Taxon
- A. fatuaAvena fatuae0
- Treatment
- C. papaya aqueous extracte0
- Outcome
- radicle lengthe0
- Direction
- reducede0
- Value
- 80%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A. fatua radicle length was reduced by C. papaya aqueous extract (80%) and leaf powder (89%) bioassays”
Claim · model-written summary
Papaya leaf powder reduced A. fatua radicle length by 89%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A. fatua radicle length was reduced by C. papaya aqueous extract (80%) and leaf powder (89%) bioassays”
Claim · model-written summary
Papaya aqueous extract reduced plumule length by 57-73%.
Not reportedTaxonComparator
Verbatim
e0“Plumule length was reduced under the influence of aqueous extract (57-73%) and powdered material (59-77%)”
Claim · model-written summary
Papaya powdered material reduced plumule length by 59-77%.
Not reportedTaxonComparator
Verbatim
e0“Plumule length was reduced under the influence of aqueous extract (57-73%) and powdered material (59-77%)”
Claim · model-written summary
Inhibition among other test species ranked H. annuus ahead of Z. mays and R. dentatus.
- Taxon
- H. annuus
Helianthus annuuse0 - Outcome
- inhibitory effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The inhibitory effects on other test species were in sequence of H. annuus followed by Z. mays and R. dentatus”
Claim · model-written summary
Papaya aqueous extract had nonsignificant effects on wheat germination and seedling growth.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- aqueous extracte0
- Outcome
- seed germination, radicle and plumule growthe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The aqueous extract showed non-significant effect on wheat seed germination, radicle and plumule growth”
Claim · model-written summary
The authors suggest papaya aqueous extract as a weed management source in wheat.
- Taxon
- wheatTriticum aestivume0
- Treatment
- C. papaya aqueous extracte0
- Outcome
- weed managemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It is suggested that C. papaya aqueous extract can be used as source of weed management in wheat crop”
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See all 8 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.