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Project News 06.2004

A new whitefly species emerges as
a pest of cereals in Central America

Projects on :: Whiteflies as pests in tropical highlands
:: Whiteflies as virus vectors in mixed cropping systems
:: Whiteflies as vectors and pests in cassava

Whiteflies as pests in the tropical highlands of Latin America

Geographical focus :: Colombia, Ecuador Start date :: January 1, 1997
Completion date :: December 31, 2000
Project Name :: Sustainable Integrated Management of Whiteflies as Pests and Vectors of Plant Viruses in the Tropics
Project Leader :: Dr. Pamela Anderson
Subproject Name :: Whiteflies as pests in the tropical highlands of Latin America
Subproject Description :: Although our understanding of Trialeurodes vaporariorum, as a pest of beans in the Andean zone, is relatively advanced, there is virtually no information on the economic importance of the greenhouse whitefly as a pest of other economically important crops, e.g. tomatoes, potatoes, and vegetables, in the tropical highlands and Inter Andean valleys. The status of the insect as a pest needs to be better ascertained. Actual yield losses have not been measured but it is known that farmers regard the insect as a major threat to these crops. Surveys and observations (CORPOICA, unpublished) indicate that pesticide use on potatoes is very high in Colombia and that tomatoes are sprayed twice a week on a regular basis.

The goal is to reduce environmental degradation due to the excessive pesticide use, and reduce threats to food security, which are resulting from whitefly and WTV damage.

Project Purpose :: To gather, generate and analyze, through scientific and grower networks, baseline data relevant to the diagnosis and characterization of whitefly and WTV problems in the tropics, in order to propose a sound research agenda for improved understanding of pest and disease dynamics, IPM development and IPM implementation.

Project Outputs ::

  • International network for whiteflies and WTVs in the tropics established
  • Socio-economic and environmental impact assessed
  • Epidemiological characterization initiated
  • Agronomic characterization initiated
  • Preliminary studies for Phase 2 conducted

Project Impact :: The immediate beneficiaries of Phase 1 of the Project will be a) IARC scientists, b) NARS scientists, c) small holder farmers, and d) donor agencies. Additional, indirect, beneficiaries will be the general community of whitefly and WTV scientists and government policy makers.

Project Leader :: Dr. César Cardona / Centro Internacional de Agricultura Tropical - CIAT
Donor Partner :: Danish International Development Agency - DANIDA
Partner institutions
and collaborating professionals ::


Centro Internacional de Agricultura Tropical - CIAT
Mr. Francisco Rendón
Ms. Isaura Rodríguez

Corporación Colombiana de Investigación Agropecuaria - CORPOICA
Dr. Aristóbulo López-Avila
Mr. Javier García


Instituto Nacional de Investigación Agropecuaria - INIAP
Ing. Oswaldo Valarezo

Dissemination Outputs ::  
Keywords :: Cassava (Manihot esculenta); Sweetpotato (Ipomoea batatas); Bean (Phaseolus vulgaris); Tomato (Lycopersicon esculentum); Pepper (Capsicum annuum and Capsicum frutescens); whitefly; Bemisia tabaci; Bemisia afer; Trialeurodes vaporariorum; plant resistance; integrated pest management; Uganda; Tanzania; Guatemala; El Salvador; Ecuador; Colombia.
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