Energy News  





.
FARM NEWS
Improve Crop Yield By Removing Manure Solids

File image.
by Staff Writers
Madison WI (SPX) Apr 01, 2011
Manure has long been used as a crop fertilizer, but the challenge of finding an efficient use of the nutrients found in manure is ever present. The ratio of nitrogen to phosphorus in manure is low in relation to the nutrient needs of most crops.

Therefore, crops tend to be overloaded with manure to meet the nitrogen requirement of agricultural crops, but the excess phosphorus from the process can damage the environment.

In a study funded by agriculture and Agri-Food Canada, scientists at the Pacific Agri-Food Research Centre in Agassiz, British Colombia, with collaborators in Quebec City, Quebec, and Brandon, Manitoba tested the effectiveness of removing solids from dairy manure to improve yield by increasing the nitrogen to phosphorus ratio and reducing the loss of nitrogen by hastening soil infiltration.

Solids were removed from the manure slurry in a passive two stage lagoon system, which resulted in the liquid fraction containing less dry matter and a higher nitrogen to phosphorus ratio than whole manure.

The results from the six year study indicated that the liquid fraction allowed for a higher crop yield and 63% more nitrogen recovery than whole manure at equal application rates.

These benefits were the most apparent in the mid-season harvests when dry summer weather conditions accelerate nitrogen loss through ammonia volatilization.

The slurry's higher nitrogen to phosphorus ratio prevented the soil from becoming overloaded with phosphorus.

Shabtai Bittman, the principal author of the study, said, "The efficacy of the dairy slurry nitrogen was greatly improved by low-cost removal of slurry solids even when using a low-emission application technique. This significantly advances the cause of efficient use of manure nutrient by crops."

The full study is published in the January/February 2011 issue of the Journal of Environmental Quality.




Share This Article With Planet Earth
del.icio.usdel.icio.us DiggDigg RedditReddit
YahooMyWebYahooMyWeb GoogleGoogle FacebookFacebook



Related Links
American Society of Agronomy
Farming Today - Suppliers and Technology



Tempur-Pedic Mattress Comparison

Newsletters :: SpaceDaily Express :: SpaceWar Express :: TerraDaily Express :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News
FARM NEWS
EU talks on modified foods break down
Brussels (UPI) Mar 30, 2011
Negotiations in the European Union on "novel foods" broke down on the issue of labeling food products from the offspring of cloned animals, officials said. Talks on the issue ended Tuesday with EU member states and the European Parliament each blaming the other, EUobserver reported. Both had agreed on the need to ban all food products from cloned animals, but failed to reach agre ... read more

.
Get Our Free Newsletters Via Email
  


FARM NEWS
Google's citizen cartographers map out the world

NASA Satellites Detect Extensive Drought Impact On Amazon

Against The Tide: Currents Keep Dolphins Apart

Measurements Of Winter Arctic Sea Ice Shows Continuing Ice Loss

FARM NEWS
GPS Study Shows Wolves More Reliant On A Cattle Diet

Galileo Labs: Better Positioning With Concept

Compact-Sized GLONASS/GPS Receiver

GPS Mundi Releases Points Of Interest Files For Ten More Major Cities

FARM NEWS
Declining mangroves shield against global warming

Brazil banks sued for encouraging deforestation

Macedonia plants three million trees to revive forests

Russian Boreal Forests Undergoing Vegetation Change

FARM NEWS
Camelina-Based Biofuel Breaks Sound Barrier

Energy Policy Must Help US Companies Commercialize Innovative Biofuel Technologies

Blocking Carbon Dioxide Fixation In Bacteria Increases Biofuel Production

Boeing Issues First Latin American Study On Jatropha Sustainability

FARM NEWS
Carmanah EG340 Solar Lights Illuminate Latin America Roadway Network

Spire's Spi-Sun Solar Simulator To Go To The European Joint Research Center At ISPRA

Better Performance And Flexibility For Solar Thermal Power Plants

Helix Water District Unveils New Clean Energy Source

FARM NEWS
Alstom Announces Commercial Operation Of First North American Wind Farms

Vestas unveils new offshore turbine

US hopes to resolve China wind turbine rift

Nordex USA Enters First 300MW Joint Venture

FARM NEWS
Wyoming to expand coal mining

China mine explosion kills 11, two missing

Wyoming coal leases to be auctioned

Japan crisis must not spark rush to fossil fuels: Sweden

FARM NEWS
Chinese artist Ai Weiwei detained, staff says

Ai Weiwei: China's artist-activist

Police remain silent on Ai Weiwei detention

Police remain silent on Ai Weiwei detention


The content herein, unless otherwise known to be public domain, are Copyright 1995-2010 - SpaceDaily. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by SpaceDaily on any Web page published or hosted by SpaceDaily. Privacy Statement