Market demands lead companies to improve their processes by implementing quality management. Quality management is inserted to support decision-making in quality control assessments to allow variability reduction, achieving homogeneity when added to the standardization of methodologies, which is the main characteristic desired by the industry. Our study seek to analyze if quality control of silvicultural operations in a forest-based company showed an increased compliance index between 2012 and 2016; and to analyze the efficiency of quality control evaluation through comparative analyzes with the methodology proposed by Shewhart for the most outlier operation. The evaluations have shown that quality assessments did not present a regular evolutionary pattern in the period evaluated. The herbicide application activity was the most outlier operation, since it did not show a trend for constant improvement.
