Featured Research

from universities, journals, and other organizations

Biosolids can boost soil phosphorus levels for years

Date:
January 23, 2013
Source:
United States Department of Agriculture - Research, Education and Economics
Summary:
Treated wastewater solids called biosolids are sometimes used by farmers to boost soil nutrient levels. Now research provides new information about how long those plant nutrients remain after biosolids have been applied to the soil.

Results from laboratory studies by ARS agronomist Eton Codling suggest that long-term plant nutrient levels in soils amended with biosolids can sometimes exceed crop nutrient demands.
Credit: Stephen Ausmus

Treated wastewater solids called biosolids are sometimes used by farmers to boost soil nutrient levels. Now research by a U.S. Department of Agriculture (USDA) scientist provides new information about how long those plant nutrients remain after biosolids have been applied to the soil.

This work was conducted by Agricultural Research Service (ARS) agronomist Eton Codling, and supports the USDA priority of promoting international food security. ARS is USDA's chief intramural scientific research agency.

Biosolids used in agricultural production have been processed to kill pathogens, and their use is strictly regulated to ensure that the materials don't harm the environment, human health or animal health. Farmers who follow pre- and post-application management regulations can obtain permits to apply biosolids to fields where food and feed crops are grown.

Codling measured mineral levels in three different soils that had received a single amendment from a biosolid processed either via high heat, additions of lime, anaerobic digestion, or air drying. The amendments, which were applied at several different rates to the soils, had taken place from 16 to 24 years earlier during previous studies on biosolids. As part of the earlier work, the fields had been cropped after the biosolids had been added, so the biosolid nutrients in the experimental fields had been available for crop uptake for at least 16 years before Codling began his research.

Codling observed that phosphorus levels were generally higher in the biosolid-amended soils than in soils that didn't receive the amendments. This strongly indicated that soluble phosphorus levels in biosolid-amended soils could exceed typical plant requirements for years after biosolids were added.


Story Source:

The above story is based on materials provided by United States Department of Agriculture - Research, Education and Economics. The original article was written by Ann Perry. Note: Materials may be edited for content and length.


Cite This Page:

United States Department of Agriculture - Research, Education and Economics. "Biosolids can boost soil phosphorus levels for years." ScienceDaily. ScienceDaily, 23 January 2013. <www.sciencedaily.com/releases/2013/01/130123115356.htm>.
United States Department of Agriculture - Research, Education and Economics. (2013, January 23). Biosolids can boost soil phosphorus levels for years. ScienceDaily. Retrieved September 1, 2014 from www.sciencedaily.com/releases/2013/01/130123115356.htm
United States Department of Agriculture - Research, Education and Economics. "Biosolids can boost soil phosphorus levels for years." ScienceDaily. www.sciencedaily.com/releases/2013/01/130123115356.htm (accessed September 1, 2014).

Share This




More Plants & Animals News

Monday, September 1, 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