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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)

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)

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)

Without disturbances in nature the world's forests will be impoverished
The forests of the world are not the stable and unchanging ecosystems they have been assumed to be. Without the occurrence of wide-spread disturbances in nature, such as forest fires, icing, or volcanic activity, forests will eventually be impoverished, owing to a lack of phosphorous. This is... view more (2004-06-21)

Study Reveals that Nitrogen Fertilizers Deplete Soil Organic Carbon
The common practice of adding nitrogen fertilizer is believed to benefit the soil by building organic carbon, but four University of Illinois soil scientists dispute this view based on analyses of soil samples from the Morrow Plots that date back to before the current practice began.   view more (2007-10-30)

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)

Illinois research zeroing in on optimum soil nitrogen rates
A new study to evaluate the Illinois Soil N Test (ISNT) calls into question traditional soil fertility recommendations and promises a radical new soil-based approach that will benefit crop yields, the environment, and the bottom line for farmers.   view more (2005-09-01)

Some plants may compensate for herbivore damage by stimulating nutrient release in the soil
Browsing by mammals often has a serious impact on the growth of tree saplings and the regeneration of forests. However, there is much uncertainty with regard to effects on soil nutrient cycling and in turn, potential consequences for the growth of plants. In a paper to be published in the June... view more (2004-05-13)

Tropical plants go with the flow ... of nitrogen
Tropical plants are able to adapt to environmental change by extracting nitrogen from a variety of sources, according to a new study that appears in the May 7 early online edition of The Proceedings of the National Academy of Sciences.   view more (2007-05-08)

Drop in acid rain altering Appalachian stream water
Appalachian hardwood forests may be getting a respite from acid rain but data from a long-term ecological study of stream chemistry suggests that the drop in acid rain may be changing biological activity in the ecosystem and hiking dissolved carbon dioxide in forest streams.   view more (2006-12-12)

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)

Soil emissions are much-bigger-than-expected component of air pollution
Nitrogen oxides produced by huge fires and fossil fuel combustion are a major component of air pollution. They are the primary ingredients in ground-level ozone, a pollutant harmful to human health and vegetation.   view more (2005-06-07)

Nature can help reduce greenhouse gas, but only to a point
Plants apparently do much less than previously thought to counteract global warming, according to a paper to be published in next week's online edition of Proceedings of the National Academy of Sciences.   view more (2006-04-11)

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)

A Little Nitrogen Can Go a Long Way
Varying the rate of crop production inputs such as fertilizer and seed makes intuitive sense, as farmers have long observed differences in crop yield in various areas of a single field. The availability of spatial yield information from combines equipped with yield monitors has provided a good... view more (2008-09-04)

Gene discovery suggests that plant breeders may be able to produce nitrogen-fixing crops more easily than previously thought.
Scientists at the Sainsbury Laboratory (SL)[1], Norwich, have today reported the discovery of a plant gene that is essential in controlling the interactions between plants and microorganisms that enable them to establish intimate associations, which are of benefit to both partners. Published in the... view more (2002-06-26)

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)

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)

New model revises estimates of terrestrial carbon dioxide uptake
Researchers at the University of Illinois have developed a new model of global carbon and nitrogen cycling that will fundamentally transform the understanding of how plants and soils interact with a changing atmosphere and climate.   view more (2007-12-12)

Woods Hole Research Center scientist furthering discussion of soil carbon decomposition
Significantly more carbon is stored in the world's soils than is present in the atmosphere. In a process called a "positive feedback," global warming may stimulate decomposition of soil organic matter, thus releasing heat-trapping carbon dioxide gas to the atmosphere, possibly causing the... view more (2006-03-09)

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)

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)

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)

Pesticides choke pathway for nature to produce nitrogen for crops
Many farmers applying pesticides to boost crop yields may instead be contributing to growth problems, scientists report in a new study.   view more (2007-06-06)
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