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Publication Type:
| Refereed |
Author(s): | Lee, D. J.;
Wollum, A. G.;
Bowman, D. C.;
Peacock, C. H.;
Rufty, T. W. Jr. |
Author Affiliation: | Lee, Bowman, Peacock, Rufty: Department of Crop Science, North Carolina State University, Raleigh, NC; Wollum: Department of Soil Science, North Carolina State University, Raleigh, NC |
Title: | Temperature effects on nitrogen mineralization in bermudagrass turf |
Section: | Soil biology and chemistry Other records with the "Soil biology and chemistry" Section
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Meeting Info.: | Toronto, Ontario, Canada: July 2001 |
Source: | International Turfgrass Society Research Journal. Vol. 9, No. Part 1, 2001, p. 394-397. |
Publishing Information: | Oakville, Ontario, Canada: International Turfgrass Society |
# of Pages: | 4 |
Keywords: | TIC Keywords: Amino acids; Temperature gradients; Temperatures; Nitrogen mineralization; Cynodon; Organic matter; Ammonium compounds; Soil temperature; Ammonification; Release rate
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Abstract/Contents: | "Mineralization of soil organic matter may contribute sugnificant amounts of nitrogen to turfgrasses, which would impact fertilizer requirements. However, there are few data from turfgrass systems on which to base estimates of mineralization. This study was conducted to determine temperature effects on ammonium release in three different soils planted to bemudagrass turf (Cynodon spp.). Soils were collected from two sites in Eastern North Carolina and included two Rimini sands differing in organic matter, and a Norfolk loam. Ammonium release was determined using a laboratory incubation procedure. Incubation temperatures ranging from 10°C to 42°C were maintained using a temperature gradient block. Optimum temperatures for ammonium release (2.0 to 3.0 μg g-1 hr-1) ranged from 28°C to 38°C. Release rates declined rapidly outside the optimum range. Statisically similar linear regressions were fit to the data between 20°C and 36°C, which indicate that ammonium release rates for the different soils were similar. The data suggest that soil temperature may be one of the more important environmental factors affecting ammonium release and should be considered when modeling nitrogen behavior in turfgrasses." |
Language: | English |
References: | 11 |
Note: | Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Lee, D. J., A. G. Wollum, D. C. Bowman, C. H. Peacock, and T. W. Jr. Rufty. 2001. Temperature effects on nitrogen mineralization in bermudagrass turf. Int. Turfgrass Soc. Res. J. 9(Part 1):p. 394-397. |
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