0000000000684125
AUTHOR
Emmanuel Piron
A virtual spreader to overcome experimental limits: Example of use to deepen the meaning of the transverse coefficient of variation
International audience; A virtual spreader was modelled by combining the use of theoretical motion equations and statistical distributions of input parameters. These parameters were deduced from experimental measurements using a custom-made spreader, an imaging system, a particle impact recording device and a rotating test bench. Using this model, each spread pattern was computed using a random selection of values following the statistical distribution of each input parameter. Using simulations, we quantified how the CV value was affected by application rates and measurement protocols whatever spreader settings. Simulations showed the CV value and its measurement variability increased when …
AgroTechnoPôle. Plateforme au service du développement de nouvelles solutions technologiques pour la transition agroécologique. Webinaire Axema. 10 mars 2021
National audience
A virtual spreader to overcome experimental limits: Example of use to deepen the meaning of the transverse coefficient of variation
National audience; Nowadays, centrifugal spreading is the most used method to apply fertiliser in fields. Numeroustechnical developments have improved spreaders to reach high precision applications.Nevertheless, these developments have never taken into account the influence of the spreadingvelocity variation on the shape of the spread pattern. However, practical examples show that speedvariations regularly happen in the field. For instance, high speeds applications require punctualslowing down because of:- Trees or posts;- Slopes, hills;- Field borders/ends.Technical devices already exist to avoid the influence of the travel speed on the disc rotation speedand on the application rate in fie…