TIFTON, Ga. (DTN) -- Site-specific farming is about applying just the right amount of crop inputs for each different soil condition. Seed, crop chemicals, fertilizer: all can be precisely placed to match the soil type, terrain and crop needs. Now, add water to that list.

New irrigation systems use GPS guidance and accurate controllers to put necessary water where it's needed and cut back or shut off the water completely in field areas that don't need it.

The idea of variable rate irrigation (VRI) is catching on particularly well in southwest Georgia, where topography, water conservation, and concerns about runoff ...