News tagged with organic matter

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Why mercury is more dangerous in oceans

Even though freshwater concentrations of mercury are far greater than those found in seawater, it's the saltwater fish like tuna, mackerel and shark that end up posing a more serious health threat to humans ...

Jun 27, 2010
5 / 5 (8) 0 | with audio podcast

Keeping nitrogen in the soil and out of the water

(PhysOrg.com) -- Nitrogen is important for optimal crop production, but can be lost to leaching as nitrate. High amounts of nitrate in drinking water can be harmful to people, especially infants and pregnant women. While ...

Jun 11, 2010
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No-till farming improves soil stability

A joint Agricultural Research Service (ARS)-multi-university study across the central Great Plains on the effects of more than 19 years of various tillage practices shows that no-till makes soil much more stable than plowed ...

May 11, 2010
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Measuring the stability of organic waste

The number of waste treatment facilities using biological processes to biodegrade waste has been increasing over the years. These installations receive municipal and industrial organic wastes with the common main goal of ...

Mar 29, 2010
3.3 / 5 (3) 0

In Organic Cover Crops, More Seeds Means Fewer Weeds

(PhysOrg.com) -- Farmers cultivating organic produce often use winter cover crops to add soil organic matter, improve nutrient cycling and suppress weeds. Now these producers can optimize cover crop use by ...

Jan 26, 2010
2.5 / 5 (2) 0

Climate variability impacts the deep sea

Deep-sea ecosystems occupying 60% of the Earth's surface could be vulnerable to the effects of global warming warn scientists writing in the Proceedings of the National Academy of Sciences.

Nov 02, 2009
4.1 / 5 (7) 0

Help students think like soil scientists

Emphasizing cross-disciplinary concepts in teaching soil science courses, such as mass-volume relationships, can help undergraduates learn real-world, problem-solving skills that are crucial to their success in soil science ...

Sep 28, 2009
5 / 5 (1) 0