Navigation Links
UC Davis begins $2.8 million in studies of agricultural nitrogen's impacts
Date:6/12/2009

UC Davis researchers will receive $2.8 million in new grants to study the use and impacts of nitrogen, a hero of the agricultural revolution that is increasingly viewed as a worrisome source of water and air pollution and potent greenhouse gases.

"This is one of the most important and least publicized environmental issues we face: Escaped nitrogen from agricultural production affects the quality of our air, water, and soil and has huge potential to contribute to climate change," said Tom Tomich, director of the Agricultural Sustainability Institute at UC Davis.

"Many members of the public and politicians are unaware of the scope of this challenge. And many farmers are unaware that nitrogen management can save them money."

Nitrogen is a chemical element that occurs naturally in Earth's air, water and soil. It is essential to life, and cycles through all plants, animals and people. Nitrogen-based fertilizers help California farmers produce more than 400 agricultural commodities -- vegetables, fruits, meats and dairy products worth $36 billion a year.

But excess nitrogen is emitted from soils, seeps into groundwater and runs off into surface waters. Wastes from cattle, chickens and other livestock include nitrogen. Farm machines burning oil, gasoline and diesel release nitrogen to the air.

The resulting environmental impacts include:

  • Trapped solar radiation in the atmosphere, contributing to the "greenhouse effect" that is changing the Earth's climate;
  • Decreased high-altitude ozone, which allows more solar radiation to reach Earth's surface, causing skin cancer and adding to the greenhouse effect;
  • Increased smog and ground-level ozone, which can cause or worsen respiratory diseases such as asthma and viral infections such as the common cold;
  • High concentrations of nitrates in groundwater, which can cause methemoglobinemia, or "blue baby disease," and possibly bladder and ovarian cancers; and
  • Nitrogen runoff in bays and coastal areas, where it makes algae numbers spike then crash, drawing oxygen from the water and leading to "dead zones" -- areas that cannot support finfish, shellfish or most other aquatic life.

Those environmental impacts are not fully documented, Tomich said.

"With this new funding, we can start to fill in those blanks, and improve management of nitrogen, carbon and water to help move agriculture toward sustainability in significant ways," he said.

Data on agricultural nitrogen pollution are limited, and some nitrogen pollution forms are difficult to monitor. Measurements can be labor-intensive and expensive and are influenced by variables such as weather conditions, irrigation timing and method, and crop-specific fertilization practices.

The new studies should improve data-collection methods, said Agricultural Sustainability Institute researcher Johan Six, a professor in the Department of Plant Sciences.

"It's urgent that we know how much nitrous oxide and other greenhouse gases are released during irrigation and fertilization of farm lands in California," Six said. "The good news is we know that it is economically feasible to reduce these emissions. The first step is quantifying the necessary reductions."

The new Agricultural Sustainability Institute grants and objectives include:

  • $1.5 million from the David and Lucile Packard Foundation for a statewide assessment of existing scientific evidence on nitrogen use in conventional and alternative farming systems, and relevant practices and policy options. Also: a program to improve communication about nitrogen concerns among California farmers, ranchers, extension advisors, environmental and community groups, agribusiness (including the fertilizer industry) and government agencies (including California Department of Food and Agriculture and U.S. Environmental Protection Agency). This grant is to the Agricultural Sustainability Institute, in collaboration with the University of California Agricultural Issues Center, Kearney Foundation for Soil Science, and the UC Sustainable Agriculture Research and Education Program.
  • $500,000 from the California Energy Commission and $350,000 from the David and Lucile Packard Foundation to Johan Six for new research on nitrous oxide emissions in various farming systems.
  • $300,000 from the California Air Resources Board to Will Horwath, professor in the UC Davis Department of Land, Air and Water Resources, for research on practical ways to reduce nitrous oxide emissions in California agriculture.
  • $150,000 from the California Department of Food and Agriculture's Fertilizer Research and Education Program to Horwath, Six and David Goorahoo, an assistant professor at the Center for Irrigation Technology at California State University, Fresno, to measure nitrous oxide emissions from cotton, corn and vegetable cropping systems.


'/>"/>

Contact: Tom Tomich
tptomich@ucdavis.edu
530-574-2503
University of California - Davis
Source:Eurekalert

Related biology news :

1. UC Davis bird-flu expert calls for changes in early-warning system
2. UC Davis researchers discover how HIV turns food-poisoning into lethal infection
3. UC Davis stem researchers demonstrate safety of gene therapy using adult stem cells
4. UC Davis researcher leads climate-change discovery
5. UC Davis researchers define characteristics, treatment options for XXYY syndrome
6. UC Davis researchers discover new drug target for inflammatory disease
7. UC Davis chemical ecologist wins major award
8. UC Davis researchers discover a key to aggressive breast cancer
9. UC Davis researchers discover Achilles heel in pancreatic cancer
10. UC Davis researchers exploring gene therapy to fight AIDS
11. UC Davis team refines cancer treatments to reduce potential nerve damage
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/22/2016)... , January 22, 2016 /PRNewswire/ ... announced the addition of the  "Global ... their offering. --> http://www.researchandmarkets.com/research/4lmf2s/global_behavioral ... the  "Global Behavioral Biometric Market 2016-2020" ... Research and Markets ( http://www.researchandmarkets.com/research/4lmf2s/global_behavioral ) ...
(Date:1/20/2016)... , Jan. 20, 2016  Synaptics Incorporated ... human interface solutions, today announced sampling of S1423, ... for wearables and small screen applications including smartwatches, ... printers. Supporting round and rectangular shapes, as well ... excellent performance with moisture on screen, while wearing ...
(Date:1/11/2016)... Calif. , Jan. 11, 2016 Synaptics ... human interface solutions, today announced that its ClearPad ® ... integration (TDDI) products won two separate categories in the ... Mobile Innovator and Best Technology Breakthrough. The Synaptics ® ... cost, a simplified supply chain, thinner devices, brighter displays ...
Breaking Biology News(10 mins):
(Date:2/10/2016)... ... ... LATHAM, NEW YORK... Marktech Optoelectronics will feature their new high-speed ... Francisco’s Moscone Center from February 16-18, 2016, and at the healthcare-focused BiOS Expo on ... diode standard packages feature a TO-46 metal can with active areas of 1.0mm and ...
(Date:2/10/2016)... ... February 10, 2016 , ... PatientCrossroads announces that ... secure online PatientCrossroads platform, has exceeded both its one-year and overall recruitment goals ... study, which seeks to advance understanding of the hereditary risks for certain kinds ...
(Date:2/10/2016)... (PRWEB) , ... February 10, 2016 , ... ... regenerative medicine, has announced a new agreement with Singapore-based Global Stem Cells Network ... from the Philippines, Thailand and Singapore in the latest adipose and bone marrow ...
(Date:2/10/2016)... (PRWEB) , ... February 09, 2016 , ... ... services and current winner of the Highest Overall Customer Rating Award from ... all of its business units across the USA, Canada, Mexico and China. , ...
Breaking Biology Technology: