SAND CAMBISOL FUNCTIONING AS A FILTER THROUGH LONG-TERM IRRIGATION WITH WASTEWATER

Abstract
Flooding with wastewaters over a period of 80 years has led to a fairly strong concentration of nitrogen, phosphorus, copper, and zinc in a sandy Cambisol of glacial origin in comparison with that of a forest soil of the same type. Nevertheless, we registered a loss of iron and manganese. The 2-year examination of the water, redox, and nutrient dynamics showed that hardly any filtering of iron and manganese nutrients is taking place anymore. Flooding with wastewaters over a period of 80 years has led to a fairly strong concentration of nitrogen, phosphorus, copper, and zinc in a sandy Cambisol of glacial origin in comparison with that of a forest soil of the same type. Nevertheless, we registered a loss of iron and manganese. The 2-year examination of the water, redox, and nutrient dynamics showed that hardly any filtering of iron and manganese nutrients is taking place anymore. © Williams & Wilkins 1980. All Rights Reserved.

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