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Related Experiment Videos

Nitrogen in the environment: sources, problems, and management.

R F Follett1, J L Hatfield

  • 1USDA-ARS, Soil-Plant-Nutrient Unit, Fort Collins, Co 80522, USA. rfollet@lamar.colostate.edu

Thescientificworldjournal
|June 14, 2003
PubMed
Summary
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Nitrogen (N) is essential for life and food production, but its inefficient use leads to environmental pollution. Efficient nitrogen management is crucial to mitigate harmful effects on ecosystems and human health.

Area of Science:

  • Agricultural Science
  • Environmental Science
  • Ecology

Background:

  • Nitrogen (N) is a vital element for life and a key component in global food production.
  • Sources of agricultural N include fertilizer, biological fixation, manure, crop residues, and soil mineralization.
  • Increasing human populations amplify the environmental impact of nitrogen excretion.

Purpose of the Study:

  • To highlight the benefits of nitrogen in agriculture.
  • To describe the detrimental environmental and health effects of misplaced or improperly utilized nitrogen.
  • To emphasize the need for efficient nitrogen management.

Main Methods:

  • Review of existing literature on nitrogen cycling and its impacts.
  • Analysis of nitrogen sources in agriculture and their environmental fate.

Related Experiment Videos

  • Examination of human health and ecological consequences of nitrogen pollution.

    • Main Results:

    • Nitrogen fertilizer is a primary source, while manure N is often inefficiently used.
    • Gaseous N emissions (N2O, NH3) contribute to greenhouse warming and ecological imbalance.
    • Soluble N pollutes water resources, posing risks like methemoglobinemia and potential cancer from drinking water contaminants.

    Conclusions:

    • Efficient nitrogen use is critical due to its potential for long-range transport and transformation into harmful forms.
    • Improper nitrogen management negatively affects human health, animal welfare, and ecological systems.
    • Sustainable nitrogen practices are essential for environmental protection and public health.