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| Publication Type:
| Refereed |
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| Author(s): | Duff, D. T.;
Liu, H.;
Hull, R. J.;
Sawyer, C. D. |
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| Author Affiliation: | Duff, Hull and Sawyer: Plant Sciences Department, University of Rhode Island, Kingston, Rhode Island USA; and Liu: Agriculture Department, Western Kentucky University, Bowling Green, Kentucky USA |
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| Title: | Nitrate leaching from long established Kentucky bluegrass turf |
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| Section: | Environmental issues: Contributed papers
Other records with the "Environmental issues: Contributed papers" Section
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| Meeting Info.: | Sydney, Australia: 1997 |
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| Source: | International Turfgrass Society Research Journal. Vol. 8, No. Part 1, 1997, p. 175-186. |
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| Publishing Information: | Blacksburg, VA: International Turfgrass Society |
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| # of Pages: | 12 |
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| Keywords: | TIC Keywords: Nitrates; Leaching; Poa pratensis; Turfgrass quality; Clippings; Nitrogen level; Seasonal quality evaluation; Soil water; Temperatures
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| Abstract/Contents: | "Nitrate leaching from long established and intensively managed 'Baron' Kentucky bluegrass (Poa pratensis L.) turf growing in a humid temperate climate was investigated. Turf was fertilised with urea nitrogen (Urea-N) at 0, 10.3, 18.0 and 25.7 g m² year⁻² from 1986 to 1993 in five fractional treatments per year. Suction-cup lysimeters installed 60 cm deep in each plot were used to sample soil water semimonthly for 19 months commencing 19 June 1992. Soil water was assayed for nitrate nitrogen (NO₃-N) and nitrate leaching was estimated based on a hydraulic flux model. Turf quality ratings were taken monthly each growing season from 1988 to 1993. Clippings harvested monthly during 1992-93 were analysed for total nitrogen. Turf quality responded to nitrogen rate only during the spring although the nitrogen recovered in clippings was positively correlated with application rate throughout both seasons. Soil water nitrate concentrations were low during mid-spring but increased through summer and autumn when they correlated positively with fertilisation rates. The efficacy of early autumn nitrogen fertilisation is questioned because soil nitrate is abundant at that time. Rainfall and temperature differences between 1992 and 1993 implicated temperature as a significant factor in nitrate leaching from established turf." |
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| Language: | English |
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| References: | 13 |
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| Note: | Figures
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Duff, D. T., H. Liu, R. J. Hull, and C. D. Sawyer. 1997. Nitrate leaching from long established Kentucky bluegrass turf. Int. Turfgrass Soc. Res. J. 8(Part 1):p. 175-186. |
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