Effects of Three Medicinal Plant Products on Survival , Oviposition and Progeny Development of Cowpea Bruchid , Callosobruchus Maculatus ( Fab. ) ( Coleoptera : Chrysomelidae ) Infesting Cowpea Seeds in Storage

2013 ◽  
Vol 6 (1) ◽  
pp. 61-66 ◽  
Author(s):  
Kayode D. Ileke ◽  
Daniel S. Bulus ◽  
Ayisat Y. Aladegoroye
Keyword(s):  
Medicinal Plant ◽  
Callosobruchus Maculatus ◽  
Plant Products ◽  
Cowpea Seeds ◽  
Cowpea Bruchid

scholarly journals Eugenia aromatica O. Berg and Afromomum melegueta K. Schum botanical entomocides as possible synergetic protectant against Callosobruchus maculatus (Fabricus) (Coleoptera: Chrysomelidae) infestation on stored cowpea (Vigna unguiculata (L.) Walp.)

2019 ◽  
Vol 65 (2) ◽  
pp. 1-13
Author(s):  
Jacobs Mobolade Adesina ◽  
Kayode David Ileke ◽  
Yallappa Rajashekar
Keyword(s):  
Food Security ◽  
Vigna Unguiculata ◽  
Callosobruchus Maculatus ◽  
Stored Products ◽  
Egg Hatching ◽  
Plant Products ◽  
Toxicity Effect ◽  
Synergetic Effects ◽  
Food Grains ◽  
Cowpea Seeds

Summary Introduction: Post-harvest protection of food grains against stored products insects’ infestation is a complementary means towards ensuring food security. Objective: Powders and extracts from Eugenia aromatica O. Berg and Aframomom melegueta K. Schum are to be evaluated for their synergetic effects on Callosobruchus maculatus Fabricus under laboratory conditions. Methods: The products were applied at rates of 1 g/20 g and 1% conc./20 g cowpea seeds respectively. Results: Findings show that E. aromatica products was more effective by evoking 100% mortality within 24 and 48 h, while synergetic effects of the two products evoked 100% mortality at 72 and 96 h. The survival of the bruchids treated with plant powder from eggs to adults indicated that, control had significant (p<0.05) progeny development (75.50%) in comparison with sole application of E. aromatica and combination with A. melegueta which recorded no progeny development. Conclusion: The study revealed that the plant products exerted toxicity effect against cowpea bruchid. Thus, they can be used to prevent egg hatching and thereby helping in the management of cowpea seeds.

scholarly journals Efficacy of Piper guineense Schumach. seed powder in the control of Callosobruchus maculatus (Fabricius, 1775) (Coleoptera: Chrysomelidae: Bruchinae) and on the nutritional and organoleptic characteristics of stored cowpea Vigna unguiculata (L.) Walp.

2018 ◽  
Vol 87 (2) ◽  
pp. 119-140
Author(s):  
Frank O. Ojiako ◽  
Adeyinka A. Adesiyun ◽  
Gabriel O. Ihejirika ◽  
Sunday A. Dialoke
Keyword(s):  
Callosobruchus Maculatus ◽  
Adult Emergence ◽  
Adult Mortality ◽  
Proximate Analysis ◽  
Crude Fibre ◽  
Piper Guineense ◽  
Seed Damage ◽  
Cowpea Seeds ◽  
Organoleptic Characteristics ◽  
Cowpea Bruchid

Abstract Brown pepper (Piper guineense) seed powder, used for culinary and medicinal purposes, was evaluated in the laboratory with a conventional storage chemical, actellic 2% dust (Pirimiphos-methyl), as standard, to protect stored cowpea against the cowpea bruchid, Callosobruchus maculatus. Four rates of the seed powder were used (2.5, 5.0 and 10.0 g/100 g seed with a control, 0.0 g) while actellic dust was applied at 1.0, 2.0, 3.0 g/100 g seed and 0.0 g/100 g seed as control. Data on percentage mortality, oviposition, adult emergence and seed damage were collected over a six-month period. Weevil perforation indexes (WPI) were estimated with the seed damage data. All data were analysed for variance at P≤0.05. Actellic dust at the lowest dose inflicted adult mortality (90 – 100%) in the first 48 h after treatment and prevented oviposition (95 – 100%) in the first five months of storage compared to the control. The highest rate of Piper guineense application caused mortality of up to 90.0% in 48 h, reduced oviposition (70 – 80%), decreased adult emergence (15.90 to 28.40 insects) as against the control (104.7 – 272.7 insects) and reduced seed damage by 80 % with a WPI of between 33.3 and 10.0 %. Proximate analysis and germination tests indicated that the treatment materials increased the moisture and crude fibre content, decreased crude protein content but had no significant effect on the viability of stored seeds. Organoleptic tests demonstrated that treatment materials had no significant negative effect on taste, odour, texture, appearance and overall acceptability of cooked cowpea seeds after six months of storage. It can be safely concluded that the powdered form of P. guineense seed at the highest doses (5.0 and 10.0 g) gave significant protection of cowpea seeds against the cowpea bruchid, which compared favourably with actellic dust when applied topically.

Primary and secondary metabolite compounds in cowpea seeds resistant to the cowpea bruchid [Callosobruchus maculatus (F.)] in postharvest storage

2021 ◽  
Vol 93 ◽  
pp. 101858
Author(s):  
Akovognon Dieudonné Kpoviessi ◽  
Symphorien Agbahoungba ◽  
Eric E. Agoyi ◽  
Ephraim Nuwamanya ◽  
Achille E. Assogbadjo ◽  
...  
Keyword(s):  
Secondary Metabolite ◽  
Callosobruchus Maculatus ◽  
Postharvest Storage ◽  
Cowpea Seeds ◽  
Cowpea Bruchid
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