Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Cost effective manure management

06.04.2011
Shallow disk injection found to be economically sound and environmentally safe, a technique that could help reduce nutrient runoff into the Chesapeake Bay

Recycling manure is an important practice, especially for large livestock producers. Manure can be used as fertilizer to aid in crop production, aiding livestock producers that grow their own feed crops.

While manure does provide a rich nutrient source for crops, it also can contribute to nutrient leaching and runoff. This can contaminate the surrounding ecosystem and lead to eutrophication of waterways. The desire for farmers to be able to recycle manure in an environmentally safe manner while providing a sufficient supply of nutrients to their crops without reducing profit, is an ongoing struggle.

Scientists at USDA's Agricultural Research Service and Penn State used computer simulated farms with the support of field research to compare the environmental impact and economic efficacy of using alternative manure application methods in farming systems. The techniques and practices being evaluated included broadcast spreading with and without incorporation by tillage, band application with soil aeration, and shallow disk injection.

By comparing predicted ammonia emissions, nitrate leaching, and phosphorus runoff losses with those measured over four years of field trials, researchers were able to accurately evaluate the model and find a good agreement. By simulating techniques that would improve the incorporation of manure, the scientist noticed reductions in ammonia emission and phosphorus runoff.

The study showed that applying manure with a shallow disk injection device allowed the lowest nutrient loss without negatively impacting the farm's profitability compared with the other techniques being studied. Band application of manure along with the use of soil aeration was less environmentally beneficial. Moreover the increased cost of production was usually greater than the overall economic benefit.

"Shallow injection of manure appears to be the best option for reducing nutrient losses to the environment. Although this additional equipment and the management required increase the cost of manure handling, the annual improvement in nutrient use can often offset this cost and in some cases may even improve farm profitability," said Al Rotz, one of the USDA-ARS scientists who conducted the study.

Results from the study were published in the March/April 2011 issue of the Journal of Environmental Quality.

Research is ongoing in Pennsylvania and other locations in the mid Atlantic area to further evaluate different methods for subsurface injection of manure in both liquid and solid forms. Refinement and adoption of this manure application technique is one of many potential strategies for reducing nutrient runoff into the Chesapeake Bay. Reduction in this nutrient loading is needed to help clean and improve the aquatic life in the Bay.

Sara Uttech | EurekAlert!
Further information:
http://www.agronomy.org

More articles from Agricultural and Forestry Science:

nachricht Trees and climate change: Faster growth, lighter wood
14.08.2018 | Technische Universität München

nachricht Animals and fungi enhance the performance of forests
01.08.2018 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig

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: Unraveling the nature of 'whistlers' from space in the lab

A new study sheds light on how ultralow frequency radio waves and plasmas interact

Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...

Im Focus: New interactive machine learning tool makes car designs more aerodynamic

Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.

When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...

Im Focus: Robots as 'pump attendants': TU Graz develops robot-controlled rapid charging system for e-vehicles

Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.

Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....

Im Focus: The “TRiC” to folding actin

Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.

Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...

Im Focus: Lining up surprising behaviors of superconductor with one of the world's strongest magnets

Scientists have discovered that the electrical resistance of a copper-oxide compound depends on the magnetic field in a very unusual way -- a finding that could help direct the search for materials that can perfectly conduct electricity at room temperatur

What happens when really powerful magnets--capable of producing magnetic fields nearly two million times stronger than Earth's--are applied to materials that...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Within reach of the Universe

08.08.2018 | Event News

A journey through the history of microscopy – new exhibition opens at the MDC

27.07.2018 | Event News

2018 Work Research Conference

25.07.2018 | Event News

 
Latest News

Unraveling the nature of 'whistlers' from space in the lab

15.08.2018 | Physics and Astronomy

Diving robots find Antarctic winter seas exhale surprising amounts of carbon dioxide

15.08.2018 | Earth Sciences

Early opaque universe linked to galaxy scarcity

15.08.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>