Featured Research

from universities, journals, and other organizations

With Just A Sprinkle, Plants Soak Up More Selenium

Date:
March 1, 2004
Source:
USDA/Agricultural Research Service
Summary:
Because of their ability to sop up selenium, some plants have been enlisted in efforts to clean up soils and wastewater that have an excess of this potentially toxic element. Now Agricultural Research Service scientists have shown that the way contaminated irrigation water is delivered to plants affects how much selenium they will absorb from it.

Soil scientist Gary Ba๑uelos evaluates canola plants grown for cleaning selenium-rich soils. In studies on livestock, he is testing the potential use of high-selenium canola forage as feed.
Credit: Photo by Hanna M. Castle -- USDA/Agricultural Research Service.

Because of their ability to sop up selenium, some plants have been enlisted in efforts to clean up soils and wastewater that have an excess of this potentially toxic element. Now Agricultural Research Service scientists have shown that the way contaminated irrigation water is delivered to plants affects how much selenium they will absorb from it.

Soil scientist Donald L. Suarez and plant physiologist Catherine M. Grieve, working with soil scientist James A. Poss, found that sprinkling--rather than flooding--kale and turnip plants with selenium-laden drainage waters allowed the plants to absorb almost twice as much selenium from the water. Suarez, Grieve and Poss are at the agency's George E. Brown Jr. Salinity Laboratory in Riverside, Calif.

Boosting plants' uptake of selenium creates a place to naturally "store" the element, thereby decreasing the amount of selenium that might otherwise leach into drainage and groundwater.

As a possible additional benefit, the selenium-enriched kale and turnip plants--as well as other crops irrigated by sprinkling--could be used to supplement the diets of livestock raised in selenium-deficient regions of the United States. Animals must consume some of this essential nutrient for optimum growth and stress tolerance.

Suarez expects the sprinkler method to work with other crops, so the findings are likely to aid growers who are interested in producing selenium-rich vegetables for health-conscious consumers.

Sprinkling water onto the crops takes advantage of plants' ability to absorb droplets of water through openings in their leaves. Plants can also soak up selenium from water via their roots. But because plant roots screen out some elements, leaf uptake can be a more effective way to capture the selenium.

ARS is USDA's chief in-house scientific research agency.


Story Source:

The above story is based on materials provided by USDA/Agricultural Research Service. Note: Materials may be edited for content and length.


Cite This Page:

USDA/Agricultural Research Service. "With Just A Sprinkle, Plants Soak Up More Selenium." ScienceDaily. ScienceDaily, 1 March 2004. <www.sciencedaily.com/releases/2004/02/040229233449.htm>.
USDA/Agricultural Research Service. (2004, March 1). With Just A Sprinkle, Plants Soak Up More Selenium. ScienceDaily. Retrieved September 2, 2014 from www.sciencedaily.com/releases/2004/02/040229233449.htm
USDA/Agricultural Research Service. "With Just A Sprinkle, Plants Soak Up More Selenium." ScienceDaily. www.sciencedaily.com/releases/2004/02/040229233449.htm (accessed September 2, 2014).

Share This




More Plants & Animals News

Tuesday, September 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

We've Got Mites Living In Our Faces And So Do You

We've Got Mites Living In Our Faces And So Do You

Newsy (Aug. 30, 2014) — A new study suggests 100 percent of adult humans (those over 18 years of age) have Demodex mites living in their faces. Video provided by Newsy
Powered by NewsLook.com
Washington Wildlife Center Goes Nuts Over Baby Squirrels

Washington Wildlife Center Goes Nuts Over Baby Squirrels

Reuters - US Online Video (Aug. 30, 2014) — An animal rescue in Washington state receives an influx of orphaned squirrels, keeping workers busy as they nurse them back to health. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Experimental Ebola Drug ZMapp Cures Lab Monkeys Of Disease

Experimental Ebola Drug ZMapp Cures Lab Monkeys Of Disease

Newsy (Aug. 29, 2014) — In a new study, a promising experimental treatment for Ebola managed to cure a group of infected macaque monkeys. Video provided by Newsy
Powered by NewsLook.com
Killer Amoeba Found in Louisiana Water System

Killer Amoeba Found in Louisiana Water System

AP (Aug. 28, 2014) — State health officials say testing has confirmed the presence of a killer amoeba in a water system serving three St. John the Baptist Parish towns. (Aug. 28) Video provided by AP
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