Full TGIF Record # 193267
Item 1 of 1
DOI:10.21273/HORTSCI.46.11.1545
Publication Type:
i
Refereed
Author(s):Lloyd, Daniel T.; Soldat, Douglas J.; Stier, John C.
Author Affiliation:Lloyd: Division of Plant Sciences, Turfgrass Research Center, University of Missouri, Columbia, MO; Soldat: Department of Soil Science; Stier: Department of Horticulture, University of Wisconsin-Madison, Madison, WI
Title:Low-temperature nitrogen uptake and use of three cool-season turfgrasses under controlled environments
Section:Turf management
Other records with the "Turf management" Section
Source:HortScience. Vol. 46, No. 11, November 2011, p. 1545-1549.
# of Pages:5
Publishing Information:Alexandria, VA: American Society for Horticultural Science
Keywords:TIC Keywords: Agrostis stolonifera; Cold resistance; Fall fertilization; Nitrogen efficiency; Nitrogen uptake; Plant metabolism; Poa annua; Poa pratensis
Abstract/Contents:"Fall fertilization of turfgrass in northern climates is often considered to be agronomically beneficial, although research on nitrogen (N) uptake during cold temperatures is sparse and environmental concerns exist regarding nitrate leaching. Therefore, the objective of this study was to evaluate N uptake potential, use, and plant metabolic response in a climate-controlled environment evaluating the responses of various cool-season turfgrass species to variable N rates and temperature regimens. Creeping bentgrass (Agrostis stolonifera L.), kentucky bluegrass (Poa pratensis L.), and annual bluegrass (Poa annua var. reptans L.) were seeded and grown for 3 months and then acclimated in a growth chamber to one of three climate regimens corresponding to 15 Sept., 15 Oct., and 15 Nov. in Madison, WI. Grasses were fertilized at 0, 25, 49, or 98 kg ha-1 N with 15N-labeled ammonium sulfate (10 atom % 15N) by applying a liquid solution of 75 mL per pot (1 cm of solution in depth). Data collected included verdure biomass, root mass, net canopy photosynthesis, and 15N fertilizer uptake. For all turfgrass species, shoot growth increased in response to N application in the September regimen, but not in October or November regimens. N uptake was significantly lower in the November regimen compared with September with an average of 73% of fertilizer recovery in September compared with 57% and 38% in October and November, respectively. Root mass and net canopy photosynthesis were greatest in the November treatments, although these responses were generally unaffected by N application rate. The results of this study indicate that N uptake capacity is greatly reduced as average daily temperatures approach 0 ° C. Nitrogen application rates should be adjusted downward to maximize uptake efficiency in cold temperatures."
Language:English
References:30
See Also:See also related article "Low temperature nitrogen uptake by cool-season turgrasses" 2nd European Turfgrass Society Conference Proceedings, Vol. 2 May 2010, R=164105 R=164105
Note:Tables
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Lloyd, D. T., D. J. Soldat, and J. C. Stier. 2011. Low-temperature nitrogen uptake and use of three cool-season turfgrasses under controlled environments. HortScience. 46(11):p. 1545-1549.
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DOI: 10.21273/HORTSCI.46.11.1545
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