But when contrasted against the aerial photos, the difference was striking. Dry and weak areas were apparent in aerial photos. Aerial images and special software allowed the construction of maps that show the golf course's irrigation system along with other features such as drainage systems, bunkers, ponds and trees. The researchers used a GPS unit for more precise pesticide application. Eventually, ground and aerial photos, GPS data and a GIS yielded a computer-based display of the entire golf course that could be used in decision making.
Aerial photos can help farmers, too.
For example, farmers might find it hard to remember where weeds grew the previous year, but a computer can. When it's time to apply herbicides, farmers can program locations to receive either a high or low dose. The use of such computer, satellite and aircraft-based technology is spreading. Precision farming has been proven to work. According to Righetti, there is so much to precision farming that it is nearly impossible to learn on short notice.