Abstract
The Central Bank of Nigeria Anchored Borrowers Programme efforts geared towards massive production of cowpea and sustainable food security is challenged with post-harvest losses especially due to insect pest infestation in storage. So also, chemical method of pest control posed more health and ecological challenges than food insecurity. This work investigated the effect of Piper guineense on cowpea storage weevil at the agronomy laboratory of the Lagos State Polytechnic, Ikorodu. Contact toxicity of P. guineense at 0.2, 0.4, 0.6, 0.8 and 1 g per 20 g of cowpea seeds in test tubes including a control was observed. The treatment materials exhibited significant efficacy from 24 hours after infestation. P. guineense at 1 g concentration significantly reduced the oviposition potential, egg hatching rate, holes and emergence of adult Callosobruchus maculatus on treated seeds. The powders caused chronic toxicity and inhibit development. All the responses were found to be concentration dependent. Increasing rates of P. guineense increased performance. The implication of these results is discussed and recommendations proffered.
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Claims 5
Claim · model-written summary
Piper guineense treatment showed significant efficacy from 24 hours after infestation.
- Taxon
- cowpea
Vigna unguiculatae0t0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treatment materials exhibited significant efficacy from 24 hours after infestation.”
t0“Cowpea Storage Weevils”
Claim · model-written summary
Piper guineense at 1 g reduced oviposition by Callosobruchus maculatus.
- Taxon
- cowpeaVigna unguiculatae0t0
- Interactor
- Callosobruchus maculatus
Callosobruchus maculatuse0t0pest
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. guineense at 1 g concentration significantly reduced the oviposition potential, egg hatching rate, holes and emergence of adult Callosobruchus maculatus on treated seeds.”
t0“Cowpea Storage Weevils”
Claim · model-written summary
Piper guineense at 1 g reduced Callosobruchus maculatus egg hatching, seed holes and adult emergence.
- Taxon
- cowpeaVigna unguiculatae0t0
- Interactor
- Callosobruchus maculatusCallosobruchus maculatuse0t0pest
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. guineense at 1 g concentration significantly reduced the oviposition potential, egg hatching rate, holes and emergence of adult Callosobruchus maculatus on treated seeds.”
t0“Cowpea Storage Weevils”
Claim · model-written summary
The powders caused chronic toxicity and inhibited weevil development.
- Taxon
- cowpeaVigna unguiculatae0t0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The powders caused chronic toxicity and inhibit development.”
t0“Cowpea Storage Weevils”
Claim · model-written summary
Responses to Piper guineense were concentration dependent, with performance increasing at higher rates.
- Taxon
- cowpeaVigna unguiculatae0t0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All the responses were found to be concentration dependent. Increasing rates of P. guineense increased performance.”
t0“Cowpea Storage Weevils”
The same questions in other papers
Piper guineense · Callosobruchus maculatus · Vigna unguiculata (cowpea)Positive and negative results
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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.