Nitrogen management and nitrification inhibitor effects on nitrogen-15 urea. II. Nitrogen leaching and balance

D. T. Walters, G. L. Malzer

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

Nitrification inhibitors (NI) may reduce N leaching losses, and should have the greatest effect on sandy soils where leaching potential is high. This study used 27 lysimeters to evaluate the effect of a NI, nitrapyrin [2-chloro-6(trichloromethyl) pyridine], on soil water percolation (SWP) and N leaching losses from an irrigated sandy loam soil (Typic Hapludoll) planted with corn (Zea mays L.), and monitor the fate of a single application of 15N-enriched urea over a multiyear period. Nitrification inhibitors may reduce the potential for nonpoint-source pollution by delaying NO3 leaching, but will be most effective if coupled with proper N rates and conservative irrigation water management.

Original languageEnglish (US)
Pages (from-to)122-130
Number of pages9
JournalSoil Science Society of America Journal
Volume54
Issue number1
DOIs
StatePublished - Jan 1 1990

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