Featured Research

from universities, journals, and other organizations

Testing fumigant films that keep the air clean

Date:
July 26, 2011
Source:
USDA/Agricultural Research Service
Summary:
Researchers have found a way to help growers minimize emissions of fumigants used as soil treatments. Researchers used specially designed chambers to test the permeability of dozens of films used to cover fumigated soil.

ARS researchers have developed a "score" for the level of emissions released by 200 combinations of fumigants and films used to cover fumigated soil that are employed by growers of crops like peppers.
Credit: Photo courtesy of the Florida Fruit & Vegetable Association.

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 o 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.


Story Source:

The above story is based on materials provided by USDA/Agricultural Research Service. The original article was written by Dennis O'Brien. Note: Materials may be edited for content and length.


Cite This Page:

USDA/Agricultural Research Service. "Testing fumigant films that keep the air clean." ScienceDaily. ScienceDaily, 26 July 2011. <www.sciencedaily.com/releases/2011/07/110726111100.htm>.
USDA/Agricultural Research Service. (2011, July 26). Testing fumigant films that keep the air clean. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2011/07/110726111100.htm
USDA/Agricultural Research Service. "Testing fumigant films that keep the air clean." ScienceDaily. www.sciencedaily.com/releases/2011/07/110726111100.htm (accessed July 31, 2014).

Share This




More Plants & Animals News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Thousands Flocking to German Crop Circle

Raw: Thousands Flocking to German Crop Circle

AP (July 30, 2014) Thousands of people are trekking to a Bavarian farmer's field to check out a mysterious set of crop circles. (July 30) Video provided by AP
Powered by NewsLook.com
Concern Grows Over Worsening Ebola Crisis

Concern Grows Over Worsening Ebola Crisis

AFP (July 30, 2014) Pan-African airline ASKY has suspended all flights to and from the capitals of Liberia and Sierra Leone amid the worsening Ebola health crisis, which has so far caused 672 deaths in Guinea, Liberia and Sierra Leone. Duration: 00:43 Video provided by AFP
Powered by NewsLook.com
At Least 20 Chikungunya Cases in New Jersey

At Least 20 Chikungunya Cases in New Jersey

AP (July 30, 2014) At least 20 New Jersey residents have tested positive for chikungunya, a mosquito-borne virus that has spread through the Caribbean. (July 30) Video provided by AP
Powered by NewsLook.com
Xtreme Eating: Your Daily Caloric Intake All On One Plate

Xtreme Eating: Your Daily Caloric Intake All On One Plate

Newsy (July 30, 2014) The Center for Science in the Public Interest released its 2014 list of single meals with whopping calorie counts. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

    Environment News

    Technology News



      Save/Print:
      Share:

      Free Subscriptions


      Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

      Get Social & Mobile


      Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

      Have Feedback?


      Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
      Mobile: iPhone Android Web
      Follow: Facebook Twitter Google+
      Subscribe: RSS Feeds Email Newsletters
      Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins