Determination of the size and dimensions of experimental units for corn trials

Due to the importance of corn for Ecuador, whose productive improvement is given by the results of the different experiments carried out with this grass, this study was developed; which had as objective the definition of the size and dimensions of the experimental plot. For this, a uniformity experiment was carried out with 676 basic units (BU) of 1.0 m2, covering 5 maize plants for each one of them, with a planting distance of 1.0 m between rows and 0.2 m between plants. So, 81 BU combinations were simulated, from 1 x 1 to 9 x 9. For each combination (simulated plot) the yield (g·plot-1) and, simultaneously, the coefficient of variation (CV) were determined. Complementarily, the maximum curvature method was applied, supported by Fisher’s F test, as well as the multiple regression method and its corresponding response surface, to define the size and dimensions of the experimental plot. Additionally, soil heterogeneity was assessed using the Smith index. From an integral analysis of the indicated methodologies, at the end a plot size of 6.0 m2 was determined, with recommended dimensions of 2.0 m x 3.0 m; leaving the researcher free to consider at least 1.0 m to control the edge effect in the final plots.

• Autor principal: Gavilánez Luna, Freddy Carlos (author)
• Altres autors: García Bolívar, Judith Josefina (author)
• Format: article
• Idioma: spa
• Publicat: 2022
• Matèries: diseño; estadística; experimento; fertilidad del suelo; investigación agrícola.; design; estatística; experimento; fertilidade do solo; pesquisa agrícola.; agricultural research; design; experiment; soil fertility; statistics.
• Accés en línia: https://revistas.utm.edu.ec/index.php/latecnica/article/view/5337