Methodology in the cassava on-farm trials: An interim evaluation
The 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 a...
| Main Author: | |
|---|---|
| Format: | Informe técnico |
| Language: | Inglés |
| Published: |
International Center for Tropical Agriculture
1982
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/71778 |
| _version_ | 1855527779524673536 |
|---|---|
| author | Lynam, John K. |
| author_browse | Lynam, John K. |
| author_facet | Lynam, John K. |
| author_sort | Lynam, John K. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The 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) |
| format | Informe técnico |
| id | CGSpace71778 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1982 |
| publishDateRange | 1982 |
| publishDateSort | 1982 |
| publisher | International Center for Tropical Agriculture |
| publisherStr | International Center for Tropical Agriculture |
| record_format | dspace |
| spelling | CGSpace717782025-11-05T17:54:18Z Methodology in the cassava on-farm trials: An interim evaluation Lynam, John K. manihot esculenta cultivation development ecosystems experiment design marketing research starch crops technology technology evaluation ecology cultivo desarrollo ecosistema diseno experimental mercadeo investigación cultivos amilaceos tecnología evaluación de tecnologías The 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) 1982 2016-02-29T17:12:42Z 2016-02-29T17:12:42Z Report https://hdl.handle.net/10568/71778 en Open Access application/pdf International Center for Tropical Agriculture LYNAM, 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) |
| spellingShingle | manihot esculenta cultivation development ecosystems experiment design marketing research starch crops technology technology evaluation ecology cultivo desarrollo ecosistema diseno experimental mercadeo investigación cultivos amilaceos tecnología evaluación de tecnologías Lynam, John K. Methodology in the cassava on-farm trials: An interim evaluation |
| title | Methodology in the cassava on-farm trials: An interim evaluation |
| title_full | Methodology in the cassava on-farm trials: An interim evaluation |
| title_fullStr | Methodology in the cassava on-farm trials: An interim evaluation |
| title_full_unstemmed | Methodology in the cassava on-farm trials: An interim evaluation |
| title_short | Methodology in the cassava on-farm trials: An interim evaluation |
| title_sort | methodology in the cassava on farm trials an interim evaluation |
| topic | manihot esculenta cultivation development ecosystems experiment design marketing research starch crops technology technology evaluation ecology cultivo desarrollo ecosistema diseno experimental mercadeo investigación cultivos amilaceos tecnología evaluación de tecnologías |
| url | https://hdl.handle.net/10568/71778 |
| work_keys_str_mv | AT lynamjohnk methodologyinthecassavaonfarmtrialsaninterimevaluation |