Nitrogen transport processes in soil

Research output: Chapter in Book/Report/Conference proceedingChapter

11 Scopus citations

Abstract

There is a complex relationship between transport and transformations of nitrogen (N). Leaching losses of nitrate can be affected by transformations due to denitrification, and by the uptake of nitrate by growing plants. Similarly, leaching losses can be affected by the processes of adsorption and biological transformations. Leaching is also affected by volatilization depending on the formulation of N applied to the soil. This chapter focuses on the processes affecting losses of N to the environment by transport in water flowing through or across the soil. A variety of conceptual mechanisms are outlined in this chapter, along with the most recent methods for identifying which mechanisms occur. The most recent experimental methods for quantifying the rate and magnitude of N transport in soil are also reviewed. The chapter concludes by reviewing methods for assessing spatial variability in nitrate transport through soils.

Original languageEnglish (US)
Title of host publicationNitrogen in Agricultural Systems
PublisherWiley
Pages361-400
Number of pages40
ISBN (Electronic)9780891181910
ISBN (Print)9780891181644
DOIs
StatePublished - Jan 1 2015

Bibliographical note

Publisher Copyright:
© 2008 by American Society of Agronomy, Inc. Crop Science Society of America, Inc. Soil Science Society of America, Inc.

Keywords

  • Agricultural soils
  • Macropore flow
  • Nitrate leaching
  • Nitrogen transport processes
  • Preferential flow
  • Spatial variability

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