Skip to main content Accessibility help
×
Home
Hostname: page-component-568f69f84b-xr9nb Total loading time: 0.168 Render date: 2021-09-19T12:16:43.568Z Has data issue: true Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "metricsAbstractViews": false, "figures": true, "newCiteModal": false, "newCitedByModal": true, "newEcommerce": true, "newUsageEvents": true }

Insecticidal activities of Piper guineense Schum and Thonn, and Capsicum species on the cowpea bruchid, Callosobruchus maculatus F.

Published online by Cambridge University Press:  19 September 2011

Matt F. Ivbijaro
Affiliation:
Department of Agricultural Biology, University of Ibadan, Ibadan, Nigeria
M. Agbaje
Affiliation:
Department of Agricultural Biology, University of Ibadan, Ibadan, Nigeria

Abstract

Piper guineense Schum and Thonn, mixed with cowpea seeds, Vigna unguiculata (L.) Walp, was significantly superior (P < 0.05) to the large, red and mild Capsicum annum var connoides (Miller) and the small, red and pungent Capsicum frutescens L. in causing up to 96% mortality to adults of Callosobruchus maculatus F. within 48 hr. When applied as ground pepper, P. guineense was more active insecticidally than when applied as whole fruits.

Adult bruchids in contact with P. guineense showed significant reduction (P < 0.05) in the numbers of eggs laid, and in the numbers of F1, offspring that emerged compared with adult bruchids exposed to the same doses of C. annum or C. frutescens respectively.

Neither of the peppers reduced the viability of the cowpea seeds or the absorption of water needed to soften the seed testa for decortication before cooking or processing.

At a cost price of U.S.A. $0.003 per 1 g of black pepper, and an effective application rate of 1 g black pepper to 20 g cowpea, there is a saving of over $750 by disinfesting a ton of cowpea with black pepper for a storage period of 2–3 months in a metallic drum which costs less than $50.00

Résumé

Piper Guineense Schum et Thonn, mélangé aux semences de niébé, Vigna unguiculata (L.) Walp, a été significativement supérieur (P < 0,05) au Capsicum annum var connoides (Miller) gros, rouge et doux et au Capsicum frutescens L. petit, rouge et piquant en provoquant dans 48 hr la mort de 96% des adultes de Callosobruchus maculatus F. P. guineense, utilisé sous forme de poudre, a eu une activité insecticide plus forte que lorsqu'il est utilise en entier. Les bruches adultes en contact avec P. guineense montrèrent une diminution significative (P < 0,05) des nombres d'oeufs pondus et des nombres de progénitures obtenus en F1 en comparaison avec les bruches adultes seumis respectivement aux mêmes doses de C. annum ou C. frutescens.

Ni l'un ni l'autre des poivres n'a réduit la viabilité des semences ou l'absorption de l'eau nécessaire au ramollissement du tégument des grains pour le décortiquage avant préparation ou transformation. Une application effective de la dose de 1 g poivre noir pour 20 g de niébé, a un prix de revient de 0,003 par gramme de poivre noir, fait gagner plus de 750 dollars U.S.A. en désinfectant, pour une durée de stockage de 2 à 3 mois, une tonne de niébé dans une caisse métallique qui ceûte moins de 50 dollars U.S.A.

Type
Research Articles
Copyright
Copyright © ICIPE 1986

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Cobley, L. S. (1965) An Introduction to the Botany of Tropical Crops, pp. 192221. Longmans, Green and Co. Ltd, London.Google Scholar
Mejule, F. O. (1974) An investigation into the insecticidal effect of Capsicums. Niger. Stored Prod. Res. Inst. pp. 8990.Google Scholar
Miyakado, M., Nakayama, I., Yoshoka, H. and Nakatani, N. N. (1979) The Piperaceae amides: structure of pipercide, a new insecticidal amide from Piper nigrum L. Agric. biol. Chem. 43, 16091611.Google Scholar
Ogobegwu, C. O. (1973) Studies on the insecticidal activity of some Nigerian plant extracts. Dissertation in partial fulfilment of the degree of B.Sc. Agriculture, University of Ibadan, Ibadan.Google Scholar
Okogun, J. I. and Ekong, D. E. U. (1974) Extracts from the fruits of Piper guineense Schum and Thonn. J. chem. Soc. 21952198.Google Scholar
Pursglove, J. W. (1968) Tropical Crops: Dicotyledons. Longman, London.Google Scholar
Su, H. C. F. (1977) Insecticidal properties of black pepper to rice weevils and cowpea weevils. J. econ. ent. 70, 1821.CrossRefGoogle Scholar

Send article to Kindle

To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Insecticidal activities of Piper guineense Schum and Thonn, and Capsicum species on the cowpea bruchid, Callosobruchus maculatus F.
Available formats
×

Send article to Dropbox

To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

Insecticidal activities of Piper guineense Schum and Thonn, and Capsicum species on the cowpea bruchid, Callosobruchus maculatus F.
Available formats
×

Send article to Google Drive

To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

Insecticidal activities of Piper guineense Schum and Thonn, and Capsicum species on the cowpea bruchid, Callosobruchus maculatus F.
Available formats
×
×

Reply to: Submit a response

Please enter your response.

Your details

Please enter a valid email address.

Conflicting interests

Do you have any conflicting interests? *