Abstract: A computer-implemented method for controlling an agricultural treatment device (200) in an agricultural field, the method comprising the following steps: (a) receiving by the computing unit (120) soil-related data relating to the sub-field zone (G1), wherein the soil-related data are obtained by real-time measurements using a soil sensor (110) and wherein (G1) which is located within the agricultural field, (b) receiving by the computing unit (120)—from a database (130) and/or from real-time measurements—crop-related data, field-related data, and weather-related data relating to the sub-field zone (G1), (c) determining via a computing unit (120)—based on the soil-related data, crop-related data, field-related data and optionally weather-related data—at least one indicator indicative of the crop protection demand and/or crop nutrition demand relating to the sub-field zone (G1), (d) dynamically generating via the computing unit (120), an output signal (140) dependent from the determined at least one indicator,

Abstract: Described herein is a communication system including a cloud server, a first server, and at least one second server. The first server includes a first communication interface configured to provide reference spectral information referring to at least one reference sample and reference analytical data to the cloud server. Each second server includes a second communication interface configured to provide spectral information related to at least one substance to the cloud server. The cloud server is configured to: generate a calibration model, where the calibration model comprises at least one parameter; apply the calibration model to the spectral information, whereby at least one value for the at least one parameter is extracted; and provide the at least one value for the at least one parameter to the first server. The first server is further configured to determine treatment data using the at least one value for the at least one parameter.