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Economics of biological control of cassava mealybug in Africa

dc.contributor.authorZeddies, J.
dc.contributor.authorSchaab, R.P.
dc.contributor.authorNeuenschwander, P.
dc.contributor.authorHerren, H.R.
dc.date.accessioned2019-12-04T11:21:12Z
dc.date.available2019-12-04T11:21:12Z
dc.date.issued2001
dc.identifier.citationZeddies, J., Schaab, R.P., Neuenschwander, P. & Herren, H.R. (2001). Economics of biological control of cassava mealybug in Africa. Agricultural Economics, 24(2), 209-219.
dc.identifier.issn0169-5150
dc.identifier.urihttps://hdl.handle.net/20.500.12478/3706
dc.description.abstractPest populations of the cassava mealybug Phenacoccus manihoti Mat.-Ferr. (Homoptera: Pseudococcidae) were reduced successfully by the biological control agent Apoanagyrus (Epidinocarsis) lopezi De Santis (Hymenoptera: Encyrtidae) throughout most of sub-Saharan Africa. The economics of the project were evaluated based on data from field trials, socio-economic surveys, published results, and financial information provided by the International Institute of Tropical Agriculture (IITA) and the national programmes. Costs and benefits for the biological control of P. manihoti were calculated over 40 years (1974–2013) for 27 African countries, for four different scenarios, taking into account that impact by A. lopezi and speed of the impact differ between ecological zones. A reasonable calculation considering compounded interest resulted in a benefit cost ratio of about 200 when cassava was costed at world market prices, and of about 370–740 when inter-African prices were considered.
dc.description.sponsorshipDeutsche Gesellschaft für Internationale Zusammenarbeit
dc.language.isoen
dc.subjectEconomics Of Biological Control
dc.subjectPhenacoccus Manihoti
dc.subjectApoanagyrus Lopezi
dc.subjectCassava
dc.titleEconomics of biological control of cassava mealybug in Africa
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationUniversität Hohenheim
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.regionCentral Africa
cg.coverage.regionEast Africa
cg.coverage.countryGhana
cg.coverage.countryBenin
cg.coverage.countryNigeria
cg.coverage.countryGabon
cg.coverage.countryCongo
cg.coverage.countryZaire
cg.coverage.countryTanzania
cg.coverage.countryMalawi
cg.coverage.countryZambia
cg.coverage.countryUganda
cg.isijournalISI Journal
cg.authorship.typesCGIAR and advanced research institute
cg.iitasubjectCassava
cg.iitasubjectPests Of Plants
cg.iitasubjectPlant Health
cg.iitasubjectClimate Change
cg.accessibilitystatusLimited Access
local.dspaceid95861
cg.identifier.doihttps://doi.org/10.1016/S0169-5150(00)00064-5


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