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5.5 Fertilizer Application Control American Society of Agricultural

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  Van Liedekerke, Paul, Josse De Baerdemaeker, and Herman Ramon. 2006. Section 5.5 Fertilizer Application Control, pp. 273-278 of Chapter 5 Precision Agriculture, in CIGR Handbook of Agricultural Engineering Volume VI Information Technology. Edited by CIGR--The International Commission of Agricultural Engineering; Volume Editor, Axel Munack. St. Joseph, Michigan, USA: ASABE.  .(doi:10.13031/2013.21680)
Authors:   P. Van Liedekerke, J. De Baerdemaeker, and H. Ramon
Keywords:   Fertilizer control, Spread pattern, Weed detection

This section highlights uses of computing and modeling in fertilizer application. The goal is a better control of spread pattern and applied dose for precise fertilizer management. After a short description of different fertilizer types, on-line measurement and adaptation of dose control is discussed. These techniques are still developing, but they will allow specific spreading doses that conform to environmental regulations. Next, a new technique using numerical models is discussed. This allows calculation of spreading patterns as a function of both particle and machine properties. In this way, expensive tests can be avoided. Finally, both methods are linked to GIS, such that an optimal fertilizer dose can be matched to specific soil needs.

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