Fölsch, MarcelOtter-Nacke, SusanneClaupein, WilhelmTheuvsen, LudwigKämpf, AnitaMorgenstern, Marlies2019-02-202019-02-202010978-3-88579-252-9https://dl.gi.de/handle/20.500.12116/20249Soil analysis based precise application of fertilizers is one strategy of farmers to increase efficiency in plant production. Sample data are processed on the farm using standard GIS tools. Practical aspects to be observed in variable rate application of P, K, and Mg fertilisers are discussed and compared with results of a research project conducted at farm level.deText/Conference Paper1617-5468