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Internet Directory - Top : Society : Issues : Environment : Farming

Top : Society : Issues : Environment : Farming (6 web sites)
Organic Food
 Related Categories
Science: Agriculture
Science: Environment: Agriculture
Society: Issues: Business: Agriculture
Society: Issues: Animal_Welfare: Farming
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Ecological Farming May Cause More Heavy Metals In The Soil
Some systems of ecological arable farming which use only organic fertilisers contaminate the soil with levels of cadmium, copper and lead which are twice as high as when a combination of both animal manure and artificial fertiliser is used.
http://www.scienceagogo.com/news/19990109225423data_trunc_sys.shtml