Methodology in the cassava on-farm trials: An interim evaluation

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dc.creatorLynam, John K.
dc.date1982
dc.date2016-02-29T17:12:42Z
dc.date2016-02-29T17:12:42Z
dc.date.accessioned2026-06-27T14:41:47Z
dc.descriptionThe different methodological stages of cassava on-farm trials and their relationships regarding the objectives and functions of the Cassava Program at the Centro Internacional de Agricultura Tropical (CIAT) are outlined. Site selection, farm trial design and analysis, and some illustrative results are included. Trials are currently focussed on: (1) comprehension of the factors determining yields in traditional cassava production systems; (2) determination of the changes in the systems necessary to support the higher yield plateau of the hybrid var.; and (3) determination of the changes necessary to adapt these systems to the requirements of new industrial markets. The need for clear objectives in this type of program is emphasized. On the other hand, the design of methodology will depend on the particular stage of development of the research program and the particular characteristics of the crop or cropping system. From these initial trials it was concluded that yield and quality variation was much greater between farms than between treatments, thus orientating methodology towards working with substantial variation in the yield estimates. On-farm trialswill eventually evolve as a tool for ex-ante evaluation of integrated cassava production and market development projects. Tables on the types of variables used and the results obtained in trials carried out in Colombia are included. (CIAT)
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/71778
dc.identifier.urihttp://hdl.handle.net/123456789/85687
dc.languageen
dc.publisherInternational Center for Tropical Agriculture
dc.rightsOpen Access
dc.sourceLYNAM, J.K. 1982. Methodology in the cassava on-farm trials: An interim evaluation. Centro Internacional de Agricultura Tropical (CIAT), Cali, CO. 38 p. (Seminarios internos. Serie SE-2-82)
dc.subjectmanihot esculenta
dc.subjectcultivation
dc.subjectdevelopment
dc.subjectecosystems
dc.subjectexperiment design
dc.subjectmarketing
dc.subjectresearch
dc.subjectstarch crops
dc.subjecttechnology
dc.subjecttechnology evaluation
dc.subjectecology
dc.subjectcultivo
dc.subjectdesarrollo
dc.subjectecosistema
dc.subjectdiseno experimental
dc.subjectmercadeo
dc.subjectinvestigación
dc.subjectcultivos amilaceos
dc.subjecttecnología
dc.subjectevaluación de tecnologías
dc.titleMethodology in the cassava on-farm trials: An interim evaluation
dc.typeReport

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