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    Economics of biological control of cassava mealybug in Africa

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    S01ArtZeddiesEconomicsInthomNodev.pdf (782.4Kb)
    Date
    2001
    Author
    Zeddies, J.
    Schaab, R.P.
    Neuenschwander, P.
    Herren, H.R.
    Type
    Journal Article
    Metadata
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    Abstract/Description
    Pest 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.
    https://doi.org/10.1016/S0169-5150(00)00064-5
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/3706
    Digital Object Identifier (DOI)
    https://doi.org/10.1016/S0169-5150(00)00064-5
    IITA Subjects
    Cassava; Pests Of Plants; Plant Health; Climate Change
    Agrovoc Terms
    Economics Of Biological Control; Phenacoccus Manihoti; Apoanagyrus Lopezi; Cassava
    Regions
    Africa; West Africa; Central Africa; East Africa
    Countries
    Ghana; Benin; Nigeria; Gabon; Congo; Zaire; Tanzania; Malawi; Zambia; Uganda
    Collections
    • Journal and Journal Articles4835
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