Yields of winter wheat were investigated in the years 2002 - 2010 along with production factors on 500 plots in the Czech Republic. With the help of standardized yield values for individual soil quality categorized using valuated soil ecological units (BPEJ) was evaluated model with relationship of quality of mechanization and actual yields of winter wheat. Evaluation of standardized yield values was based on more than 1,000 observations yield of winter wheat. Quality of mechanization was expressed using classified of machinery into groups according progressiveness technology used in the soil preparation. To evaluate of selected observations was used also information about the quality of vegetation found in the expert evaluation of workers under the leadership of CRI. To address the dependency of factors determining the quality of mechanization and quality of vegetation regression model was used. The obtained model with quality of mechanization and the depth of tillage is significant. Best category of quality of used mechanization achieved an average yield of monitoring by 0.25 t / ha higher than 2 categories for which was achieved yield of 0.11 t / ha higher than in the third category. The difference in yield of winter wheat depending on the quality of equipment used in tillage reached the national average 0.36 t/ha. Achieved way to evaluate the model using the categorization of income to BPEJ can be used to extrapolate evaluation of machinery used in the Czech Republic.
Voltr V., Froněk P., Hruška M.
Trends in Agricultural Engineering, ČZU, 2013, s. 651-656, ISBN 978-80-213-2388-9