Draining waterlogged farm fields helps crops but can leach nitrogen into waterways. A three-decade-long experiment is helping farmers strike the right balance.
Almost all of the nitrogen that fertilizes life in the open ocean of the Gulf of Mexico is carried into the gulf from shallower coastal areas, researchers from Florida State University found.
A recent study shows bioreactors effectively remove nitrogen over time
Scientists have discovered dramatic changes in the chemistry and composition of Sargassum, floating brown seaweed, transforming this vibrant living organism into a toxic “dead zone.” Results suggest that increased nitrogen availability from natural and anthropogenic sources, including sewage, is supporting blooms of Sargassum and turning a critical nursery habitat into harmful algal blooms with catastrophic impacts on coastal ecosystems, economies, and human health. Globally, harmful algal blooms are related to increased nutrient pollution.
Nitrogen is essential for crops, but when it gets into the water supply, it spells big trouble. Scientists are trying to help farmers strike the right balance by measuring their fields.
Qingzhi Zhu, PhD, Associate Professor in the School of Marine and Atmospheric Sciences (SoMAS) at Stony Brook University, has received a SUNY Technology Accelerator Fund (TAF) award for his research to develop a low-cost, high-accuracy nitrogen detecting system for wastewater systems.
CHICAGO – ‘Ouamuamua, the first observed interstellar object, zipped through our solar system back in October 2017 — and astronomers have been trying to understand it ever since. While some researchers speculated it could be a comet, asteroid, or even…
A pioneering study of U.S nitrogen use in agriculture has identified 20 places across the country where farmers, government, and citizens should target nitrogen reduction efforts.
The 20 nitrogen “hotspots of opportunity”–which appear on a striking map–represent a whopping 63% of the total surplus nitrogen balance in U.S. croplands, but only 24% of U.S. cropland area.
Nitrogen inputs are so high in these areas that farmers can most likely reduce nitrogen use without hurting crop yields.
Differences in nitrogen loss intensity between livestock and crops confirm the need for change.
Research shows nitrogen efficiency and productivity not a tradeoff
Extreme rain events that occur on nine days a year drive around a third of all nitrogen yields on farmland in the Mississippi River basin, according to a new study. The research could inform how and when farmers apply nitrogen fertilizer to their fields and has environmental implications for the hypoxic zone in the Gulf of Mexico.
Soybean yields decreased when planted after cereal rye
Climate change has contributed to the increase in the number of wildfires in the Arctic where it can dramatically shift stream chemistry and potentially harm both ecosystems and humans. Researchers at the University of New Hampshire have found that some aftereffects, like decreased carbon and increased nitrogen, can last up to five decades and could have major implications on vital waterways.
In a new study published in the Proceedings of the National Academy of Sciences (PNAS), plant genomic scientists at New York University’s Center for Genomics & Systems Biology discovered the missing piece in the molecular link between a plant’s perception of the nitrogen dose in its environment and the dose-responsive changes in its biomass.
Erika Hersch-Green is studying how increasing amounts of nitrogen and phosphorus in terrestrial ecosystems lead to decreasing biodiversity, not only among plant species, but in herbivores and pollinators as well.
Researchers at Woods Hole Oceanographic Institution (WHOI), the University of California Los Angeles (UCLA) and their colleagues used a new geochemical tool to shed light on the origin of nitrogen and other volatile elements on Earth, which may also prove useful as a way to monitor the activity of volcanoes. Their findings were published April 16, 2020, in the journal Nature.
But different microbes have distinct roles to play, and environmental factors influence activity.
New York University biologists captured highly transient interactions between transcription factors—proteins that control gene expression—and target genes in the genome and showed that these typically missed interactions have important practical implications. In a new study published in Nature Communications, the researchers developed a method to capture transient interactions of NLP7, a master transcription factor involved in nitrogen use in plants, revealing that the majority of a plant’s response to nitrogen is controlled by these short-lived regulatory interactions.
Northern Arizona University professors Rebecca Hewitt and Michelle Mack authored the study, published this week in New Phytologist, which could have implications for researchers and computer models that predict where nitrogen and carbon go at both regional and global levels.