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The increased use of nitrogen fertilizers added to soil in the production of food and fiber during the past quarter century has stimulated interest in the effect of nitrates on the surface and groundwater of the United States. Use of ammonia alone, as the immediate precursor of nitrates, added to the soil as a fertilizer, increased from 1,800,000 tons in 1951 to 5,600,000 tons in 1963. When these amounts and other types of nitrogen fertilizers are added to a similar amount of natural soil nitrogen, there is not only a doubling of crop production but also an added opportunity for loss of this nitrate and other forms of nitrogen to streams, lakes, and groundwater. This is especially true if the fertilizers are not properly used and if those used are not completely utilized by plants.
The increased use of nitrogen fertilizers added to soil in the production of food and fiber during the past quarter century has stimulated interest in the effect of nitrates on the surface and groundwater of the United States. Use of ammonia alone, as the immediate precursor of nitrates, added to the soil as a fertilizer, increased from 1,800,000 tons in 1951 to 5,600,000 tons in 1963. When these amounts and other types of nitrogen fertilizers are added to a similar amount of natural soil nitrogen, there is not only a doubling of crop production but also an added opportunity for loss of this nitrate and other forms of nitrogen to streams, lakes, and groundwater. This is especially true if the fertilizers are not properly used and if those used are not completely utilized by plants.
Nitrates in the Environment
Nichols, M. Starr (author)
Journal ‐ American Water Works Association ; 57 ; 1319-1327
1965-10-01
9 pages
Article (Journal)
Electronic Resource
English
Soil , Nitrates , Fertilizers , Nitrogen , Lakes , Streams , Crops , Groundwater , Ammonia
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