UC Davis Department of Land, Air and Water Resources
http://lawr.ucdavis.edu/
Selected labs for soil, water and tissue analysis
Selected Commercial Laboratories in Northern and Central California
Soil and Fertilizers
- Agricultural Gypsum and Lime Compared
- Average Analysis of Organic Material
- Changing Soil pH
- Fertilizers
- Nitrogen
- Selected Commercial Laboratories in Northern and Central California
Composting