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The key to the lock that controls nitrogen fixation
"Bacteria that fix nitrogen only do so when they sense that there is very little nitrogen available in their environment," says Professor Ray Dixon (Project Leader at the JIC. "Normally the genes for nitrogen fixation are locked off and only unlocked and used when nitrogen levels in... view more (2004-11-04)

Organic nitrogen gives new clue to biodiversity
Scientists have found that organic nitrogen is more important for plant growth than previously thought and could contribute to maintaining diversity in grasslands.   view more (2006-04-12)

Tropical forests leak nitrogen back into atmosphere, say scientists
In findings that could influence our understanding of climate change, a Princeton research team has learned that tropical forests return to the atmosphere up to half the nitrogen they receive each year, thanks to a particular type of bacteria that lives in those forests.   view more (2006-05-23)

Ultraviolet radiation induced flux of nitrogen oxides from pine needles
In the latest edition of Nature (March 13th, 2003) a group of scientist led by professor Pertti Hari from the University of Helsinki presents a novel observation: ultraviolet radiation induced a flux of nitrogen oxides (NOx) from pine needles to the atmosphere. This result is interesting because... view more (2003-03-14)

How To Eliminate Nitrogen Narcosis Effects
We do not feel the nitrogen of air, and scientists do not believe that under normal pressure nitrogen can affect human organisms. However, being under water or in the altitude chamber nitrogen produces a different effect. Once the pressure is increased about four times, simulating the pressure... view more (2003-07-11)

Nitrogen retained through loss
The nitrogen cycle plays a major role in seagrass fields. Dutch researcher Arie Vonk studied the nitrogen dynamics of seagrasses in Indonesia. He discovered that the interaction between seagrasses, animals and microorganisms results in an efficient nitrogen cycle in tropical seagrass fields.... view more (2008-05-23)

Scientists may have solved an ecological riddle
A team of scientists may have solved the riddle of why plants that work with bacteria to convert atmospheric nitrogen gas into an essential biological nutrient (ammonia) tend to prevail in the world's tropical regions rather than higher latitudes.   view more (2008-06-19)

New Method Confirms Importance of Fungi in Arctic Nitrogen Cycle
A new method to calculate the transfer of nitrogen from Arctic mushrooms to plants is shedding light on how fungi living symbiotically on plant roots transfer vital nutrients to their hosts.   view more (2006-05-10)

Research team finds that microorganisms filter nitrogen from small streams
To understand how nitrogen accumulates in large rivers and oceans miles and miles away, scientists like Walter Dodds looked at small streams flowing closer to home.   view more (2008-03-14)

Peas and beans get by with more than a little help from friends
The relationship between leguminous plants such as peas and beans and nitrogen-fixing bacteria is even closer than previously thought, with bacteria acting like an intrinsic part of the plant, according to research published in the journal Nature today. Researchers from the University of Reading... view more (2003-04-14)

Follow the nitrogen to extraterrestrial life
The great search for extraterrestrial life has focused on water at the expense of a crucial element, say geobiologists at the University of Southern California.   view more (2006-05-05)

How much nitrogen is too much for corn?
North Carolina State researchers recently discovered a test that quickly predicts nitrogen levels in the humid soil conditions of the southeastern United States.   view more (2007-04-24)

Ecosystem consequences of a single, genetically based plant trait
Climate is often touted as the most important regulator of decomposition and nutrient cycling processes in forest ecosystems, however, in the forthcoming issue of Ecology Letters, Schweitzer and her research team from Northern Arizona University and the University of Wisconsin, USA, demonstrate... view more (2004-02-05)

Fertilizers help Zimbabwean farmers to increase crop yields
A little bit of manure and fertilizer can considerably improve the perspectives of Zimbabwean smallholder farmers in semi-arid regions. Nitrogen availability was found to be the factor that most limited farmers' efforts to increase cereal yields. Dutch-sponsored researcher Bongani Ncube... view more (2007-04-16)

New research offers prioritization plan for reducing nutrient pollution in feeder streams
To help resource managers improve the health of coastal waters degraded by nutrient pollution, a group of scientists has developed a framework for prioritizing stream restoration efforts aimed at reducing the amount of nitrogen flowing downstream.   view more (2008-02-12)

Laughing Gas in a Vicious Circle
Italian researchers discover another mechanism for the formation of atmospheric N2O Summer smog, the ozone hole, the greenhouse effect – the complex web of chemical reactions in the atmosphere, which leads to manifold environmental problems, is still not fully cleared up. In a tricky way, a... view more (2001-05-15)

From the backyard to the ocean: New study shows streams act as key nitrogen filters
KNOXVILLE -- As spring arrives across the country, tourists returning to beaches will face the reality of "red tide" -- harmful blooms of algae that make water unfit for swimming and pose risks to humans and sea life.   view more (2008-03-13)

Removal of Nitrogen from Motor Exhaust Sulfur-resistant process
Who doesn’t want to save fuel? Vehicles with lean-burning engines are therefore gaining ground. These engines work with excess air and can run on noticeably less fuel. This spares thewallet of the frequent driver, and also releases less carbon dioxide into the atmosphere. However,these... view more (2000-08-16)

Nitrogen pollution boosts plant growth in tropics by 20 percent
A study by UC Irvine ecologists finds that excess nitrogen in tropical forests boosts plant growth by an average of 20 percent, countering the belief that such forests would not respond to nitrogen pollution.   view more (2008-02-07)

Atmosphere threatened by pollutants entering ocean, prof says
A large quantity of nitrogen compounds emitted into the atmosphere by humans through the burning of fossil fuels and the use of nitrogen fertilizers enters the oceans and may lead to the removal of some carbon dioxide from the atmosphere.   view more (2008-05-16)

On-farm research shows farmers can use less nitrogen to save money and reduce environmental impact
Ongoing field trials since 2002 by a team that includes 16 farmers, Cornell researchers and Cornell Cooperative Extension field crops educators in 10 counties are showing the value of on-farm research.   view more (2007-06-21)

Improving Swine Waste Fertilizer
Swine production generates large amounts of waste. While this waste contains nutrients that may serve as fertilizer when applied to agricultural fields, the ratio of nutrients in the waste is different than what a crop requires.   view more (2008-07-09)

Putting the squeeze on nitrogen for high energy materials
Nitrogen atoms like to travel in pairs, hooked together by one of the strongest chemical bonds in nature. By subjecting nitrogen molecules to extreme temperatures and pressures scientists are getting a new understanding of not only nitrogen but other similar molecules, including hydrogen.   view more (2008-09-04)

Piecing together the cyanobacteria puzzle
Blue green algae are significant species in the global carbon cycle because they transform nitrogen gas from the atmosphere into a useable nutrient, enabling photosynthesis in nutrient-poor waters.   view more (2007-07-11)

New research may reduce global need for nitrogen fertilizers
Research published tomorrow (June 29) in the journal Nature reveals how scientists at the John Innes Centre (JIC), Norwich and Washington State University, USA have managed to trigger nodulation in legumes, a key element of the nitrogen fixing process, without the bacteria normally necessary.   view more (2006-06-29)
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