Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Tools That Will Help Reduce Nitrogen Pollution

14.09.2011
A U.S. Department of Agriculture (USDA) soil scientist in Colorado is helping farmers grow crops with less nitrogen-based fertilizer.

The fertilizers are a major reason why agriculture is a significant source of both greenhouse gas emissions and pollution in estuaries like the Gulf of Mexico and the Chesapeake Bay. If growers apply too little fertilizer, it reduces crop yields. But if they apply too much, the excess can be released into the atmosphere as nitrous oxide or leach into waterways as nitrate.

Jorge Delgado, with the Agricultural Research Service (ARS) Soil Plant Nutrient Research Unit in Fort Collins, Colo., conducts research to help growers determine exactly how much nitrogen to apply to a field, when to apply it and what alternatives might work best. The right approach can vary from one location to the next and one crop to the next.

ARS is USDA's principal intramural scientific research agency, and this research supports the USDA priorities of responding to climate change and promoting agricultural sustainability.

Delgado helped develop a tool designed for fledgling "environmental trading" credit programs that reward growers for reducing nitrogen losses. Known as the "Nitrogen Trading Tool" (NTT), it can be used to determine how much a proposed management practice may be able to reduce nitrogen losses, and how much "trading credit" could be earned by switching to it.

The concept of trading nitrogen credits is in its formative stages, but efforts have been established in Pennsylvania and Ohio, with municipalities and state environmental agencies in several states and watersheds studying the concept.

Delgado has distributed the NTT and other tools to hundreds of users, including farmers, agribusinesses, scientists, extension agents, state and federal agencies and international users. He also has used them to convince growers to improve soil-management practices by using conservation tillage, crop rotation and cover crops such as wheat, rye and other grasses. Such practices not only prevent nitrates from leaching into waterways, but prevent soils from eroding and keep carbon and nutrients sequestered in the soil.

Delgado also has published a peer-reviewed report in Advances in Agronomy showing how the NTT may be used to calculate the potential for nitrogen trading on a Virginia no-till operation, an Ohio farm where manure is applied, and irrigated barley and potato fields in Colorado. His efforts to reduce nitrogen losses in Mexico also have been published in the journal Terra Latinoamerica.

Read more about this research in the September 2011 issue of Agricultural Research magazine.

Dennis O'Brien | EurekAlert!
Further information:
http://www.usda.gov

More articles from Agricultural and Forestry Science:

nachricht Climate change, population growth may lead to open ocean aquaculture
05.10.2017 | Oregon State University

nachricht New machine evaluates soybean at harvest for quality
04.10.2017 | University of Illinois College of Agricultural, Consumer and Environmental Sciences

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: Neutron star merger directly observed for the first time

University of Maryland researchers contribute to historic detection of gravitational waves and light created by event

On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...

Im Focus: Breaking: the first light from two neutron stars merging

Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.

Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....

Im Focus: Smart sensors for efficient processes

Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).

When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...

Im Focus: Cold molecules on collision course

Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.

How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...

Im Focus: Shrinking the proton again!

Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.

It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ASEAN Member States discuss the future role of renewable energy

17.10.2017 | Event News

World Health Summit 2017: International experts set the course for the future of Global Health

10.10.2017 | Event News

Climate Engineering Conference 2017 Opens in Berlin

10.10.2017 | Event News

 
Latest News

Terahertz spectroscopy goes nano

20.10.2017 | Information Technology

Strange but true: Turning a material upside down can sometimes make it softer

20.10.2017 | Materials Sciences

NRL clarifies valley polarization for electronic and optoelectronic technologies

20.10.2017 | Interdisciplinary Research

VideoLinks
B2B-VideoLinks
More VideoLinks >>>