Size and shape of experimental units for rice (Oryza sativa) yield trials, in Guanacaste, Costa Rica
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| Authors: | , |
|---|---|
| Format: | artículo original |
| Status: | Versión publicada |
| Publication Date: | 2019 |
| Description: | Introduction: The size and shape of an experimental unit affect the accuracy of field trials. Objective: Finding the appropriate size and shape of an experimental unit for rice yield trials in Bagaces, Guanacaste, Costa Rica. Methods: We applied a multiple regression analysis to data from an uniformity trial. The residual variability, measured as a coefficient of variation (and related to different sizes and forms of a replicable experimental unit), was modeled according to length and width. The next step was to determine partial derivatives per regressor and adjust them to -1. With the equation system it is possible to obtain a combination of width and length which decreases the coefficient of variation. Results: For this work, the resulting combination was 2,93m long by 7,95m wide. Conclusion: In practical terms, the size of the experimental unit that decreases the coefficient of variation is 3m long and 8m wide. |
| Country: | Portal de Revistas UNED |
| Institution: | Universidad Estatal a Distancia |
| Repositorio: | Portal de Revistas UNED |
| Language: | Español |
| OAI Identifier: | oai:revistas.investiga.uned.ac.cr:article/2653 |
| Online Access: | https://revistas.uned.ac.cr/index.php/cuadernos/article/view/2653 |
| Access Level: | acceso abierto |
| Keyword: | plot size plot shape multiple regression experimental error tamaño de unidad experimental forma de unidad experimental regresión múltiple error experimental |