What Google is doing with the earth’s satellite imagery is really quite amazing. Check out Google’s Earth Engine. On the landing page you get some great videos. I recommend Amazon Deforestation: Timelapse and Drying of the Aral Seas: Timelapse.
Once you have had enough of these visit their data catalog where you can load any of the common earth observing satellites into a Google Workspace which is the Google Map environment with additional features allowing you to display the satellite images.
Google say they have developed their Earth Engine mainly for monitoring deforestation which is valuable but there are several ways this technology is useful in agriculture. For example load the MODIS Daily EVI into the Workspace. Once in the workspace go to a farming area you know well and you can monitor how much (healthy) crop is established. Although MODIS imagery is free to download, Google take out all the processing time and make it easy to keep an eye on the district.