Abstract
This study was conducted to investigate the efficacy of the oils of Alstonia boonei leaf extracted with n-hexane, petroleum ether, methane and acetone as contact insecticides against the activities of Callosobrochus maculatus in stored cowpea seed. The oils were incorporated at rates 2.0 mL per 20 g of cowpea seeds. The parameters assessed include, mortality of adult insects, oviposition and adult emergence to ascertain the control of the beetle. All concentration of the extracts used evoked 100% mortality of C. maculatus after 72 h of post treatment. The development of Callosobrochus maculatus was inversely proportional to the concentration of the oil. As the ratio of Alstonia boonei leaf oil extract increased, the mortality of the beetle increased. Therefore, complete protection of seeds and complete inhibition of adult emergence in the oils extracts of Alstonia boonei leaf were effective in controlling cowpea bruchid in stored cowpea seed.
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Claims 5
Claim · model-written summary
The leaf oil extracts caused 100% mortality of C. maculatus after 72 hours.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- extractse0
- Interactor
- C. maculatuse0pest
- Outcome
- mortality of C. maculatuse0
- Direction
- evokede0
- Value
- 100%e0
- Qualifier
- after 72 h of post treatmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All concentration of the extracts used evoked 100% mortality of C. maculatus after 72 h of post treatment.”
t0“stored cowpea seeds in storage”
Claim · model-written summary
Development of Callosobrochus maculatus declined as oil concentration rose.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- concentration of the oile0
- Interactor
- Callosobrochus maculatuse0pest
- Outcome
- development of Callosobrochus maculatuse0
- Direction
- inversely proportionale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The development of Callosobrochus maculatus was inversely proportional to the concentration of the oil.”
t0“stored cowpea seeds in storage”
Claim · model-written summary
Beetle mortality rose with the ratio of Alstonia boonei leaf oil extract.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Alstonia boonei leaf oil extracte0
- Interactor
- beetlee0pest
- Outcome
- mortality of the beetlee0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As the ratio of Alstonia boonei leaf oil extract increased, the mortality of the beetle increased.”
t0“stored cowpea seeds in storage”
Claim · model-written summary
The leaf oil extracts completely protected stored cowpea seeds.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- oils extracts of Alstonia boonei leafe0
- Interactor
- cowpea bruchide0pest
- Outcome
- complete protection of seedse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“complete protection of seeds and complete inhibition of adult emergence in the oils extracts of Alstonia boonei leaf were effective in controlling cowpea bruchid in stored cowpea seed.”
Claim · model-written summary
The leaf oil extracts completely inhibited adult emergence of cowpea bruchid.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- oils extracts of Alstonia boonei leafe0
- Interactor
- cowpea bruchide0pest
- Outcome
- adult emergencee0
- Direction
- inhibitione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“complete protection of seeds and complete inhibition of adult emergence in the oils extracts of Alstonia boonei leaf were effective in controlling cowpea bruchid in stored cowpea seed.”
The same questions in other papers
Alstonia boonei · pest · Vigna unguiculata (cowpea)Results agree
2 papers in the same direction as this paper
- positive
- positive
botanical · control · Vigna unguiculata (cowpea)Positive and negative results
14 papers in the same direction as this paper · 1 in the opposite direction · 2 reporting no difference from an alternative
- positive
- negative
- no effect
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See all 18 papers →botanical · pest · Vigna unguiculata (cowpea)Positive and negative results
122 papers in the same direction as this paper · 2 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- no effect
122 papers more in this group
See all 126 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.