Various plants are planted in the fields. Plants develop over the course of a season, and we can't exactly follow this development with our eyes. GIS technologies come to our aid for this. We get satellite images and drone images. We calculate the vegetation index from the obtained images and get the result. After that we find the problematic parts of the area. We take appropriate measures for those problematic parts. As a result, we can increase productivity. If we want a good harvest, we need to do continuous vegetation monitoring