A good website that really gets down to the basics of precision agriculture is precisionag.org. Kind of like Precision Ag 101.

Starting with the very basic Introduction to the Concept of Precision Agriculture, the site features information on Geo-Positioning, Precision Guidance, Yield Monitoring, Plant Nutrients and Soil Sampling, etc. If it seems like a classroom course, that’s because it is. The website was designed for the study of Precision Agriculture at California Polytechnic State University, California State University in Fresno and the University of California-Davis, with grants from USDA and ARI.