Potential for Ammonia Volatilization from Urea in Dryland Kentucky Bluegrass Seed Production Systems
Autor: | Richard T. Koenig, Christopher A. Proctor, William J. Johnston |
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Rok vydání: | 2010 |
Předmět: | |
Zdroj: | Communications in Soil Science and Plant Analysis. 41:320-331 |
ISSN: | 1532-2416 0010-3624 |
Popis: | Urea replaced ammonium nitrate (AN) as a nitrogen (N) source for dryland Kentucky bluegrass seed production in the inland Pacific Northwest in the United States. This study assessed ammonia (NH3) volatilization, N recovery, and seed yield from urea as compared to AN. Laboratory incubations indicate NH3 volatilization is greater from soil covered by fresh residue than soil alone or covered by burned residue. Although pH of the fresh and burned residues exceeded 8.0, urease activity in burned residue was |
Databáze: | OpenAIRE |
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