Farm machinery and processes management in sustainable agriculture. VI International Scientific Symposium, Lublin, Poland, 20-22 November 2013.

The main objective of the study was to determine the actual precision of the AutoTrac Guidance System according to different correction signals proposed in Belgium by John Deere: StarFire 1 (SF1), StarFire 2 (SF2) and RTK. The second objective was to observe the evolution of this precision in function of the return time between two passes in the field. Finally, the study aimed at fixing the limits of use of each correction signal. A theoretical case (specific tool especially designed for the trials) and a practical case (precision seeder for sugar beet) were studied on fully equipped tractor John Deere 6830. The observed precision of the correction signals was equal or better than the one announced by the manufacturer.