Published in California Institute for the Study of Specialty Crops, July 31, 2006, pages 1-89.
According to the California Agricultural Statistical Service (CASS), California had almost 1.7 million dairy cows in 2003. These cows generated approximately four billion dollars in revenue, making the California Dairy industry the largest agricultural commodity in the state. These California dairies are estimated to have produced roughly thirty million metric tons of manure in 2003. According to the 2002 USDA census, eighty-seven percent of the dairy cows in California are located on farms of five hundred or more cows. Furthermore, the dairy industry is heavily concentrated in eight counties of California. This high concentration of dairies in the state implies that the manure from these cows is also highly concentrated in these same areas.
Agribusiness | Agricultural and Resource Economics | Business
The definitive version is available at http://www.cissc.calpoly.edu/research/?pid=2