Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Testing Fumigant Films that Keep the Air Clean

27.07.2011
U.S. Department of Agriculture (USDA) researchers have found a way to help growers minimize emissions of fumigants used as soil treatments.

Research leader Sharon Papiernik, with the Agricultural Research Service (ARS) North Central Agricultural Research Laboratory in Brookings, S.D., used specially designed chambers to test the permeability of dozens of films used to cover fumigated soil. ARS is USDA's chief intramural scientific research agency, and the research supports the USDA commitment to agricultural sustainability.

Papiernik and her colleagues sandwiched each film between two chambers, injected fumigants into one chamber and measured both the fumigant that passed through the film into the second (receiving) chamber and the fumigant that remained in the source chamber.

The researchers tested 200 film-chemical combinations and came up with a "resistance factor" that could be used to determine emission rates for each film and fumigant under a wide range of growing conditions and weather patterns. Because each fumigant had a different chemistry, each behaved differently with each tarp.

The results, reported in the Journal of Environmental Quality, showed that some films were significantly better barriers to fumigant diffusion than others, but their effectiveness varied, depending on the fumigant tested. Some were less effective under higher humidity levels.

The work is part of a special areawide project to find the best alternatives to methyl bromide, which is being phased out as a fumigant because of its harmful effects on the Earth's protective ozone layer. The work also is intended to help the U.S. Environmental Protection Agency (EPA) and other regulators charged with developing new fumigant requirements to better protect those who use them and neighbors of treated fields.

The EPA is adapting the approach as the standard testing method for evaluating agricultural plastics used in soil fumigation. The results, along with those from other studies, have provided basic standards for film manufacturers and guidance for growers on which films offer the best options for reducing fumigant emissions.

Read more about this research in the July 2011 edition of Agricultural Research magazine.

Dennis O'Brien | EurekAlert!
Further information:
http://www.ars.usda.gov

Further reports about: ARS Agricultural Research Ambient Air CLEAN EPA pesticide Fumigant USDA environmental risk

More articles from Agricultural and Forestry Science:

nachricht Researchers discover a new link to fight billion-dollar threat to soybean production
14.02.2017 | University of Missouri-Columbia

nachricht Important to maintain a diversity of habitats in the sea
14.02.2017 | University of Gothenburg

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Microhotplates for a smart gas sensor

22.02.2017 | Power and Electrical Engineering

Scientists unlock ability to generate new sensory hair cells

22.02.2017 | Life Sciences

Prediction: More gas-giants will be found orbiting Sun-like stars

22.02.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>