QUALITY CONTROL OF CULTIVAR COMPETITION EXPERIMENTS THROUGH THE ANALYSIS OF THE STATISTICS EMPLOYED
Abstract
The objective of this work was to study the distribution of the statistics coefficient of variation (CV) and minimum significam difference (MSD) as a way to obtain the limits for quality control, in competition experiments of maize, rice, soybean, wheat, beans, barley, oat, triticale and sorghum. Data of 2017 cultivar competition assays, conducted in the state of Rio Grande do Sul, Brazil, from 1987 through 1995 were included. The CV and MSD values were submitted to the Lilliefors test. The class limits of these statistics were established based on the averages and variante of the variables tested. Using the analogous management criteria for conduction of the experiments, each assay was dismembered for each crop evaluated. We concluded that the diversity of management procedures employed in cultivar competition experiments adversely affects their quality control. This control must be performed according to the crop and management employed. No information is lost when CV and MSD classified as too high are disregarded.
Downloads
The authors declare that the work has not been previously published, nor sent simultaneously for publication in another journal and that they agree with the submission, content and transfer of the publication rights of the article in question to the scientific journal Pesquisa Agropecuária Gaúcha - PAG. The authors assume full responsibility for the originality of the article, and may incur on them any charges arising from claims by third parties in relation to the authorship of the article. The full reproduction of the journal's articles in other free-to-use electronic media is permitted under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license.
