U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 close



Research
                Research Home
                            National Programs
                            Research Projects
                            Scientific Manuscripts
                            International Engagement
                            Scientific Software/Models
                            Databases and Datasets
                            Office of Scientific Quality Review
            Media
                News & Features
                            Multimedia
                            Briefing Room
                            Down on the Farm
                            Press Room
                            Science in Your Shopping Cart
                            Scientific Discoveries
                            Tellus
                            Under the Microscope
            About ARS
                About ARS Home
                            Staff Directory
                            Labs and Research Centers (Map)
                            Headquarter Offices
                            Organizational Chart
                            Employee Services (REE Employees Only)
                            Office of Outreach, Diversity, and Equal Opportunity
            Work With Us
                Work With Us Home
                            ARS Vacancies at USAJOBS
                            Careers at ARS Information
                            Scientific Collaborations
                            Extramural Agreements
                            1890 Faculty Research Sabbatical ProgramSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home News & Events News Articles Research News 2017





- ARS@Work
- Blog
- Down on the Farm
- Image Gallery
- News Archive
- Podcasts
- Press Room
- Science in Your Shopping Cart
- Scientific Discoveries
- Tellus
- Under the Microscope
- YouTube Channel

Click the image for more information about it.
 Bringing Space Technology to Water Needs in California Vineyards December 13, 2017 ARS scientists are saving water in California's vineyards by using satellite data and computer models to better manage water resources. Bill Kustas and Martha Anderson are fine-tuning computer models at the ARS Hydrology and Remote Sensing Laboratory in Beltsville, Maryland, to help vineyard managers determine how much water to apply and when to apply it. The models tap into satellite data that measure land surface temperature providing information about soil and vine moisture levels and rates of water use or "evapotranspiration." Winemakers want grapes of uniform quality, and that can be a challenge with vineyards that have different soils and climatic conditions across thousands of acres. Even a single vineyard can have a variety of irrigation needs, according to Kustas, an ARS hydrologist. The ARS model uses satellite measurements of land surface temperature in a unique way by separating out the vine canopy from the soil surface temperatures. This gives the model greater precision and enables researchers to better evaluate vine stress, says Kustas. Known as precision agriculture, the approach is helping the E. & J. Gallo Winery cut water use by allowing the grower to identify specific vineyard areas that are under stress and need irrigation. Gallo owns and operates 25,000 acres of vineyards in California and contracts with grape producers operating another 200,000 acres. The results also will be shared with other vineyard operators, offering the potential to save water across more than a million acres of vineyards in California. With water supplies critical in California, the state's nut and fruit orchard operators are also likely to benefit from these efforts, Kustas says. Over the next two years, the ARS researchers plan to develop a daily digital map of evapotranspiration in California's Central Valley, which includes some of the world's most productive agricultural lands, at a resolution that will give growers a firm grasp of conditions in specific areas within their fields. You can read more about this research in the December 2017 issue of *AgResearch* magazine. For more information contact Dennis O'Brien, ARS Office of Communications. *The Agricultural Research Service is the U.S. Department of Agriculture's chief scientific in-house research agency. Daily, ARS focuses on solutions to agricultural problems affecting America. Each dollar invested in agricultural research results in $20 of economic impact.*


Return to top


Research
                            Media
                            About ARS
                            Work With Us


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov