The editor and main author - Hermann J. Heege - is Professor Emeritus of the University of Kiel and was formerly head of its Department of Agricultural Systems Engineering. He conceived and initiated the worldwide known concept of the N Sensor.

The chapter about weed control is from Roland Gerhards, Professor of the University of Stuttgart-Hohenheim.

Contributions about the use of plant-fluorescence are from Eiko Thiessen, Postdoctoral Research Associate in the Department of Agricultural Systems Engineering of the University of Kiel.

Markus Demmel from the Bavarian State Research Center for Agriculture in Freising-Weihenstephan and its section head for System Engineering in Crop Farming is author of the chapter about yield sensing.

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