Our analytical methods are for arid & semi-arid agriculture. We analyze: soils; plant tissues; irrigation, source/effluent waters; composts & fertilizers. Our professionals provide fertilizer recommendations, nutrient management plans, troubleshooting expertise, irrigation and fertility/salinity management. The laboratory is ELAP certified, and approved by California Department of Food & Agriculture and California Water Quality Control Board. Our quality assurance and quality control assures that we provide quality results. We work primarily in the 11 Western states, but we have extensive experience with soil and tissue from Japan, Mexico, Chile, Canada, Spain, Jordan and Uzbekistan. Clients include dairies, growers, homeowners, engineering firms, food processors, and water systems.