Anion-exchange membranes used to assess management impacts on soil nitrate

M. M. Wander, D. V. McCracken, L. M. Shuman, J. W. Johnson, J. E. Box

Research output: Contribution to journalArticlepeer-review


Our goal was to determine if anion-exchange membranes (AEMs), which can be placed in situ in soils and act as anion exchangers, were better soil nitrate (NO3-) assessment tools than soil extraction. During winter 1993–1994 we compared NO3-in the surface of tilled and non-tilled soils that were subjected to rye cover crop and fallow winter coverage treatments. Estimates of soil solution concentrations of NO3-based on KCl extracts of the AEMs were between 1 to 5 fold higher than concentrations based on soil extracts. Both methods of NO3-assessment documented a general decline in NO3-availability during the winter; however, only the AEM NO3-data produced statistically significant results. AEM data suggested that the combination of fall tillage and winter fallowing increased soil NO3-contents and led to more potential for loss of NO3-during the 1993–1994 winter than reduced tillage practices or planting a rye cover crop.

Original languageEnglish (US)
Pages (from-to)2383-2390
Number of pages8
JournalCommunications in Soil Science and Plant Analysis
Issue number15-16
StatePublished - Sep 1 1995

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Soil Science


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