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| Web URL(s): | https://scisoc.confex.com/scisoc/2023am/meetingapp.cgi/Paper/154109
Last checked: 12/04/2023 |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Frank, Kevin W. |
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| Author Affiliation: | Presenting Author and Michigan State University, East Lansing, MI |
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| Title: | Twenty-five years of nitrogen leaching from a Kentucky bluegrass turf |
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| Section: | Turf management and ecology poster (includes student competition)
Other records with the "Turf management and ecology poster (includes student competition)" Section
C05 turfgrass science
Other records with the "C05 turfgrass science" Section
211
Other records with the "211" Section
|
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| Meeting Info.: | St. Louis, Missouri: October 29-November 1, 2023 |
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| Source: | ASA, CSSA, SSSA International Annual Meeting. 2023, p. 154109. |
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| Publishing Information: | [Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America] |
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| # of Pages: | 1 |
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| Abstract/Contents: | "Nitrogen fate research was initially conducted at Michigan State University in 1991. The initial research conducted from 1991 through 1993 indicated that there was minimal risk of nitrate-nitrogen leaching from turfgrass. Subsequent years of research on the same lysimeters indicate the risk of nitrogen leaching changes as the turf ages. Since the summer of 1998 percolate samples have been collected from the same monolith lysimeters and analyzed for nitrate-nitrogen. As of 2023, the turfgrass area has now been under continual fertilization practices for 33 years with percolate collection for the last 25 years consecutively. From July 1998 through 2002, lysimeters were treated annually with urea at a low N rate 98 kg N/ha and a high N rate 245 kg N/ha. In 2003 the high N rate was reduced from 5 to 4 N/1000 ft.2/yr, and subsequently leachate NO3-N concentrations declined over an approximately 15-year period. After 15 years of treating the high N rate at 4 lb. N/1000 ft.2/yr, in 2018 we reverted to applying urea at 5 lb. N/1000 ft.2/yr split over five applications to two of the lysimeters to determine if after an extended period of time the high N rate would once again result in high nitrate-nitrogen concentrations in leachate. After six years, the amount of nitrate-nitrogen in leachate is once again increasing for the lysimeters treated with the high N rate, while the low N rate continues to result in very low concentrations of nitrate-nitrogen in leachate. This research will continue to measure nitrogen leaching in a continually managed turfgrass system and provide insight into whether or not fertilizer rates for mature turfgrass stands, such as lawns, golf course fairways and roughs need to be reduced to eliminate the potential for excessive nitrogen leaching." |
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| Language: | English |
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| References: | 0 |
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| Note: | Poster
This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Frank, K. W. 2023. Twenty-five years of nitrogen leaching from a Kentucky bluegrass turf. Agron. Abr. p. 154109. |
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| Web URL(s):
https://scisoc.confex.com/scisoc/2023am/meetingapp.cgi/Paper/154109
Last checked: 12/04/2023 |
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