Abstract
Two experiments were carried out during the summer season, 2016, in the green house / Department of Biology/Collage of Education, Samarra University, to evaluate the activity of three aqueous extract of leaves of Nerium (Nerium oleander L.),olives (Olea europaea .L) and castor (Ricinus communis.L), on control of tuber germination and growth of seedling of Cyperus rotundus L as an alternative for chemical pesticides. Experiments applied according to the complete randomized design (CRD) with four replicates. The experiments included two factors: the first factor plant species (three plant species),and the second factor concentration of plant extracts (2.5%, 5% and 10%) and their impact on germination rate and inhibition of seedling growth. The results of the first experiment recorded inhibition percentage reached (90%) at 5% and 10% from Nerium extracts compared with the same concentrations from Olive and Castor which, recorded inhibitory rate reached (30-40%) respectively. While the concentration of 2.5% was the lowest inhibition rates for germination ratio of all plant extracts under study. The second experiment showed effect of the Nerium extract at a concentration (10%) by recording completely inhibition ratio (100%), compared with the same concentrations of Castor and Olive extracts, which recorded the lowest mean growth inhibitory for all extracts. The results of the current study indicate the possibility of using natural products of plant origin as alternatives to chemical pesticides as one of the means of biological control in the management program agricultural sector with further studies of the future.
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Claims 4
Claim · model-written summary
Nerium extract at 5% inhibited Cyperus tuber germination by 90%, versus 30–40% for olive and castor extracts.
- Taxon
- Cyperus rotundus L
Cyperus rotundust0 - Treatment
- 5%e0
- Outcome
- inhibition percentagee0
- Direction
- inhibitione0
- Value
- 90%e0
- Comparator
- Olive and Castore0
_Arade_river%2C_%C3%81guas_Frias_de_Baixo%2C_Alte.JPG?width=60){kind=small}
NeriumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
_Arade_river%2C_%C3%81guas_Frias_de_Baixo%2C_Alte.JPG?width=500)
Verbatim
e0“inhibition percentage reached (90%) at 5% and 10% from Nerium extracts compared with the same concentrations from Olive and Castor which, recorded inhibitory rate reached (30-40%) respectively”
t0“Cyperus rotundus L”
Claim · model-written summary
Nerium extract at 10% inhibited Cyperus tuber germination by 90%, versus 30–40% for olive and castor extracts.
- Taxon
- Cyperus rotundus LCyperus rotundust0
- Treatment
- 10% from Nerium extractse0
- Outcome
- inhibition percentagee0
- Direction
- inhibitione0
- Value
- 90%e0
- Comparator
- Olive and Castore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inhibition percentage reached (90%) at 5% and 10% from Nerium extracts compared with the same concentrations from Olive and Castor which, recorded inhibitory rate reached (30-40%) respectively”
t0“Cyperus rotundus L”
Claim · model-written summary
At 2.5%, all extracts had their lowest germination inhibition rates.
- Taxon
- Cyperus rotundus LCyperus rotundust0
- Treatment
- 2.5%e0
- Outcome
- inhibition rates for germination ratioe0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the concentration of 2.5% was the lowest inhibition rates for germination ratio of all plant extracts under study”
t0“Cyperus rotundus L”
Claim · model-written summary
Nerium extract at 10% completely inhibited Cyperus seedling growth.
- Taxon
- Cyperus rotundus LCyperus rotunduse1
- Treatment
- Nerium extract at a concentration (10%)e0
- Outcome
- growth inhibitorye0
- Direction
- completely inhibitione0
- Value
- 100%e0
- Comparator
- Castor and Olive extractse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nerium extract at a concentration (10%) by recording completely inhibition ratio (100%), compared with the same concentrations of Castor and Olive extracts, which recorded the lowest mean growth inhibitory”
e1“growth of seedling of Cyperus rotundus L”
The same questions in other papers
Nerium · disease · Cyperus rotundusResults agree
1 paper in the same direction as this paper
- positive
botanical · disease · Cyperus rotundusPositive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
botanical · growth · Cyperus rotundusResults agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 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.