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| DOI: | 10.2136/sssaj1981.03615995004500050030x |
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| Web URL(s): | https://dl.sciencesocieties.org/publications/sssaj/pdfs/45/5/SS0450050966
Last checked: 12/07/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Hummel, N. W. Jr.;
Waddington, D. V. |
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| Author Affiliation: | Hummel: Graduate Assistant; Waddington: Professor, Penn. State Univ., University Park, PA |
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| Title: | Evaluation of slow-release nitrogen sources on Baron Kentucky bluegrass |
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| Section: | Division S-8 - Fertilizer technology and use
Other records with the "Division S-8 - Fertilizer technology and use" Section
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| Source: | Soil Science Society of America Journal. Vol. 45, No. 5, September/October 1981, p. 966-970. |
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| Publishing Information: | Madison, WIS |
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| # of Pages: | 5 |
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| Related Web URL: | https://dl.sciencesocieties.org/publications/sssaj/abstracts/45/5/SS0450050966
Last checked: 12/07/2016
Notes: Abstract only |
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| Keywords: | TIC Keywords: Nitrogen; Fertilizer evaluation; Poa pratensis; IBDU; Sulfur-coated urea; Fertilization
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| Abstract/Contents: | "As new nitrogen (N) sources are introduced, it is important that they be evaluated and their release characteristics determined in order to provide us with a basis on which to make fertilizer recommendations. In this study, several N sources were evaluated for maintenance fertilization of Kentucky bluegrass (Poa pratensis L.) turf. Treatments included isobutylidene diurea (IBDU) materials of two particle-size ranges, sulfur-coated ureas (SCU) in two size ranges from Canadian Industries Limited (CIL), SCU from the Tennessee Valley Authority (TVA), ureaformaldehyde (UF), activated sewage sludges, Organiform, soluble N sources, and combinations of slow-release and soluble N. All N sources were applied at a rate of 197 kg N·ha-1·yr-1, divided into equal fall and spring applications for 3 consecutive years. Weekly clipping yields, color ratings, and annual N recovery were the response criteria. Sulfur-coated urea produced a more uniform growth and had higher N recovery than IBDU, which was characterized by a delayed response following fertilization. Turfgrass response to the CIL and TVA SCU materials applied alone was similar. Particle-size effects with CIL SCU were slight; however, N release was quicker from fine IBDU than coarse IBDU. Slow-release characteristics were also observed for ureaform, Organiform, and the sludges, but turf quality was generally poor for these treatments. Substituting soluble N for a portion of the SCU N gave inferior turfgrass response as compared to SCU applied alone. When soluble N was used in conjunction with ureaform, Organiform LT, and IBDU, turfgrass response was improved over that obtained when these N sources were used alone. Recovery of N in the clippings was greatest for soluble N sources and SCU treatments (48 to 52%), while lowest values (15 to 29%) were associated with ureaform, Organiform, and sludges." |
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| Language: | English |
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| References: | 12 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hummel, N. W. Jr., and D. V. Waddington. 1981. Evaluation of slow-release nitrogen sources on Baron Kentucky bluegrass. Soil Sci. Soc. Am. J. 45(5):p. 966-970. |
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| DOI: 10.2136/sssaj1981.03615995004500050030x |
| Web URL(s):
https://dl.sciencesocieties.org/publications/sssaj/pdfs/45/5/SS0450050966
Last checked: 12/07/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: S 590 .S65 |
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