In the battle against weeds, tillage is one of the strongest weapons at the disposal of organic or ecologically based farmers. But, depending on when it is used, tillage can also be a strong driver of nitrogen losses that ...
Environment
Sep 30, 2015
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In the production of organic vegetables, nitrogen is important, yet can be quite costly to manage. Nitrogen management is even more challenging when production practices call for the use of polyethylene mulch combined with ...
Environment
Mar 25, 2015
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The sea-grass beds of Long Island's Great South Bay once teemed with shellfish. Clams, scallops and oysters filtered nutrients from the water and flushed money through the local economy. But three decades after the algae ...
Environment
Sep 6, 2014
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Fertilizing with inorganic nitrogen and phosphorus definitely improves crop yields, but does it also improve the soil?
Environment
Apr 29, 2013
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For nature and chemists alike, making atmospheric nitrogen available for the formation of more complex nitrogen compounds is both essential and difficult. In the European Journal of Inorganic Chemistry, Paul Chirik and Scott ...
Materials Science
Apr 5, 2013
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Nonnative species can affect the biogeochemistry of an ecosystem. For instance, Pacific salmon have been introduced as a sport fishery in many streams and lakes beyond their native range, but their introduction may be altering ...
Ecology
Apr 5, 2013
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Waste from salmon production is currently being discharged into Norwegian coastal waters. Researchers say this is a resource – worth NOK 6 billion each year – that should be exploited for new biological production.
Other
Nov 23, 2012
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The tiny phytoplankton Emiliania huxleyi, invisible to the naked eye, plays an outsized role in drawing carbon from the atmosphere and sequestering it deep in the seas. But this role may change as ocean water becomes warmer ...
Earth Sciences
Oct 13, 2011
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One helpful action anyone can take in response to global warming is to plant trees and preserve forests. Trees and plants capture carbon dioxide during photosynthesis, thereby removing the most abundant greenhouse gas from ...
Environment
May 25, 2011
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Scientists have discovered that marine diatoms, tiny phytoplankton abundant in the sea, have an animal-like urea cycle, and that this cycle enables the diatoms to efficiently use carbon and nitrogen from their environment.
Cell & Microbiology
May 11, 2011
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