Cropland net emitter of greenhouse gases

Article Abstract:

A 1991-1999 study comparing conventional, no-till, and organic cropping systems to unmanaged land in the U.S. Midwest indicates that cropland is releasing more greenhouse gases (GHG) than being removed by the crops because of high soil nitrogen levels. Conventional cropping showed the highest global warning potential, while organic agriculture and planting reduce global warming potential by 50 percent. Unmanaged ecosystems released the least amount of N2O. The study by Phil Robertson, an ecosystem scientist at Michigan State University, is discussed.

Research and Development in the Physical, Engineering, and Life Sciences, AGRICULTURAL PRODUCTION--CROPS, Agriculture, Forestry, Fishing, Agriculture, Forestry, Fishing and Hunting, Regulation of Agricultural Marketing and Commodities, Agricultural Research, Agricultural Science, Agricultural industry, Agriculture, Economic aspects, Greenhouse gases, Soil management, Soil management (Agronomy), Organic farming, Tillage, Cultivation (Land), No-tillage, Robertson, Phil

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New research challenges fertilizer as cause of coral reef declines

Article Abstract:

Georgia Institute of Technology ecologist Mark Hay presented findings that fertilizers do not increase the growth of seaweeds that compete with corals. This information presented at the National Coral Reef conference, challenges research findings that hint that dramatic coral reefs losses in the Florida Keys are caused by nutrient overenrichment.

Agricultural Chemicals, Fertilizer Manufacturing, Fertilizers, Science and technology policy, Fertilizer industry, Georgia Institute of Technology

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Predicted summer water shortages attributed to climate change

Article Abstract:

Global changes in weather can have a direct effect on winter snow stored in the mountains in the Western part of the United States. Scientists predict that average winter temperature will increase by 2.7-3.4 degrees which will drive the snow line further up. This will reduce the amount of water stored as snow, increasing the occurrence of winter floods and a shortage of supply during the summer.

Water Supply and Irrigation Systems, Water supply, Water utilities

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