Abstract: Computer-implemented method for providing corrected plant-related index data, comprising the steps of: providing initial plant-related index data for an agricultural field, preferably based on at least one satellite image; and correcting the initial plant-related index data for the agricultural field at least based on historical plant-related index data for the agricultural field and providing corrected plant-related index data.

Abstract: A computer-implemented method for verifying and/or correcting geographical map data comprising the following steps: providing geographical raw map data relating to at least one geographical area (S10); providing at least one historical temporal series f geographical map data relating to at least a part of the geographical area to which the geographical raw map data relates (S20); extracting predetermined features from the geographical raw map data and extracting features from the historical temporal series of geographical map data (S30); classifying and allocating the geographical raw map data to at least a first group of geographical map data or a second group of geographical map data based on a comparison of the features extracted from the geographical raw map data and the features extracted from the historical temporal series of geographical map data (40); executing a first operation for the first group of geographical map data and executing a second operation for the second group of geographical map data