Navigation Links
Lost water of the Napa Valley vineyards
Date:12/16/2009

Getting the most out of every drop of water is a high priority for grape growers in the southern Napa Valley, where summers are hot and dry and vines have to be irrigated to make it through the growing season. But Stanford researchers have found that a significant portion of the water applied to the vines zips right by the plants, hardly even pausing.

"We found that about 10 percent of the water that is applied is lost below the vine rooting zone and does not have contact with the soil and vine roots," said Eve Hinckley, who worked on the project for her PhD thesis in the department of geological and environmental sciences at Stanford. "This is a conservative estimate."

The problem lies in deep cracks that are a chronic feature in the clay-rich soils of the areaDue to the physical and chemical properties of these soils, they naturally swell when wet and shrink as they dry, producing cracks. Hinckley says that tendency is exacerbated by the weekly cycle of irrigating during the growing season, when vines are typically watered for 4 hours a week. Under a regular regimen of swelling and shrinking, the cracks become more pronounced and water speeds through them without interacting with the soil.

Hinckley is presenting her results at the fall meeting of the American Geophysical Union on Wednesday, Dec. 16.

She gathered her data by burying devices called lysimeters about 16 inches down in the soil just below the root zone of the vines. That is also the depth to which many of the deep cracks penetrate in the vineyard where she did her study. The lysimeters captured water flowing through the soil, giving her data on the volume, chemical composition, and residence time of water in the soil.

The speedy passage of so much water through the cracks in the soil affects more than just the job of getting enough water to the vines. There are significant consequences on either end of that rapid flow. Upstream, it means that more
'/>"/>

Contact: Louis Bergeron
louisb3@stanford.edu
650-725-1944
Stanford University
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. Newly identified enzymes help plants sense elevated CO2 and could lead to water-wise crops
2. Lehigh University professor receives Astellas Award for arsenic groundwater remediation efforts
3. Canna can: Ornamental eliminates pollutants from stormwater runoff
4. Uniform analyses for clean drinking water in Europe
5. UGA researchers lead team in discovery involving devastating freshwater fish parasite, Ich
6. Just like old times: Generating RNA molecules in water
7. K-State program will give young professionals skills to protect water resources
8. Geologists studying groundwater arsenic levels in India empower Bengali women, children
9. UMCES researchers launch freshwater marsh study
10. Nanyang Technological University and UK partners heightens cooperation in water industry
11. Ocean observing scientists and marine industries teaming up to sustainably monitor the water column
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/10/2015)...  NXT-ID, Inc. (NASDAQ: NXTD ... authentication company focused on the growing mobile commerce ... been named the "Number One Best Tech Gift ... Modern ( http://www.rethinkmodern.com/ ) is a web magazine focused ... that have a unique function or design.  ...
(Date:3/3/2015)... FOREST, Calif. , March 3, 2015 ... the leading provider of advanced cryogenic logistics ... markets including immunotherapies, stem cells, cell lines, ... and reproductive medicine, today announced the expansion ... Cancer Research Centers, ("Fred Hutch") Clinical ...
(Date:3/2/2015)... , March 2, 2015   Neurotechnology , a ... introduced the SentiGaze Software Development Kit (SDK). ... applications that use off-the-shelf webcams to track eye movements ... at a monitor. Heatmaps can be used for applications ... of online advertising. The SDK can also be used ...
Breaking Biology News(10 mins):NXT-ID's Wocket Smart Wallet Named Number One Best Tech Gift for 2015 by Rethink Modern 2NXT-ID's Wocket Smart Wallet Named Number One Best Tech Gift for 2015 by Rethink Modern 3NXT-ID's Wocket Smart Wallet Named Number One Best Tech Gift for 2015 by Rethink Modern 4Cryoport, Inc. Expands Support of Fred Hutchinson Cancer Research Center's Clinical Research Division 2Cryoport, Inc. Expands Support of Fred Hutchinson Cancer Research Center's Clinical Research Division 3Neurotechnology Releases SentiGaze SDK for Eye Movement Tracking Using Ordinary Webcams 2Neurotechnology Releases SentiGaze SDK for Eye Movement Tracking Using Ordinary Webcams 3
... Lee Hsien Loong joined more than 400 international leaders ... of Fusionopolis, its second major R&D hub. Its ... The futuristic 30-hectare Fusionopolis, which will be ... research in the interactive media, physical sciences, engineering and ...
... GREENBELT, Md. - Lightning and gases from volcanic eruptions could ... to a new analysis of samples from a classic origin-of-life ... the subject of a paper in Science appearing ... might be more famous than these; they re-defined our thoughts ...
... Infectious Diseases (NAID), one of the National Institutes of ... Washington (UW) to use systems biology approaches to comprehensively ... networks that are induced or altered during the course ... program will be led by Dr. Michael Katze, UW ...
Cached Biology News:Singapore opens Fusionopolis, its second major R&D hub in 5 years 2Singapore opens Fusionopolis, its second major R&D hub in 5 years 3Singapore opens Fusionopolis, its second major R&D hub in 5 years 4Volcanoes may have provided sparks and chemistry for first life 2Volcanoes may have provided sparks and chemistry for first life 3NIAID funds studies of how SARS and bird flu evade antiviral responses 2
(Date:3/26/2015)... The Market Element LLC, a leading ... with Designing Gig LLC to provide website design, development, ... “Forging this alliance with Designing Gig represents a pivotal ... a comprehensive, end-to-end, digital solution for our clients, which ... Chuck Miller, president of The Market Element. “For small ...
(Date:3/26/2015)... , March 26, 2015 ... a global clinical research organization , ... a definitive agreement to acquire all of ... ("QSI"), a leading provider of specialized pharmacovigilance ... to the collection, detection, assessment, monitoring, and ...
(Date:3/26/2015)... (PRWEB) March 26, 2015 WriteResult, a ... with researchers from Yale University’s School of Public Health ... study participants during a 4 month-long project. The goal ... providing low income families with free access to fresh ... and diet-related health concerns like high blood pressure, diabetes ...
(Date:3/25/2015)... Optimal Research, LLC has been nominated as ... "Best Clinical Site or Trial Network". This ... selected as a nominee in this ViE award category ... distinction in 2014. The ViE awards were created to ... positive contributions of companies and individuals in the vaccine ...
Breaking Biology Technology:The Market Element LLC and Designing Gig LLC Form Strategic Alliance 2PAREXEL Announces Execution of Definitive Agreement to Acquire Quantum Solutions India, Strengthening Leadership In Pharmacovigilance Services 2PAREXEL Announces Execution of Definitive Agreement to Acquire Quantum Solutions India, Strengthening Leadership In Pharmacovigilance Services 3PAREXEL Announces Execution of Definitive Agreement to Acquire Quantum Solutions India, Strengthening Leadership In Pharmacovigilance Services 4Yale and New Haven Farms Improving Patient Health with WriteResult's myPROpad™ 2Yale and New Haven Farms Improving Patient Health with WriteResult's myPROpad™ 3Optimal Research Nominated 2015 Vaccine Industry Excellence (ViE) Award 2
... the problem of storing film from medical images such as ... the medical industry. With some medical studies involving 2,000 pictures ... images on film are fast becoming outdated as the use ... a Wauwatosa-based startup with roots in the Mayo Clinic, offers ...
... television commercials offering things such as accredited high school ... many years, distance education was associated with television commercials ... gunsmithing, all earned over the mail, from home. This ... has been at the forefront of utilizing advances in ...
... Dr. Mark Polczynski is the technology consultant to the vice ... evenings and weekends, he's an entrepreneur. , ,Polczynski's two-person business, ... huge money maker. "My take out of this is very ... and running a global e-commerce micro-business has taught Polczynski a ...
Cached Biology Technology:TeraMEDICA offers seamless sharing of digital medical images 2TeraMEDICA offers seamless sharing of digital medical images 3TeraMEDICA offers seamless sharing of digital medical images 4TeraMEDICA offers seamless sharing of digital medical images 5Charter Business powers distance learning 2Charter Business powers distance learning 3Charter Business powers distance learning 4Irish flute passion drives e-commerce spirit for Eaton techie 2Irish flute passion drives e-commerce spirit for Eaton techie 3
Mouse monoclonal [2D7/1] to E.coli LPS ( Abpromise for all tested applications). Antigen: Tissue / cell preparation: Escherichia coli J5 cells....
Rat Antibody to Mouse TCR VB8.1,8.2:FITC Recognises the V beta 8.1 and V beta 8.2 determinants of the murine T cell receptor. Specificity: mouse TCR VB8.1 and 8.2...
Request Info...
KAI 1 (G-2)...
Biology Products: