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| Web URL(s): | http://turf.uark.edu/research/research%20series/568/Direct%20Measurement%20of%20Foliar%20Absorbed%20Urea-Nitrogen%20Following%20Application%20to%20Putting%20Green%20Turfgrass%20Species.pdf
Last checked: 06/30/2009
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Stiegler, Chris;
Richardson, Mike;
McCalla, John;
Summerford, Josh |
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| Author Affiliation: | Department of Horticulture, University of Arkansas, Fayetteville, Arkansas |
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| Title: | Direct measurement of foliar absorbed urea-nitrogen following application to putting green turfgrass species |
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| Source: | Arkansas Turfgrass Report 2008. 2009, p. 121-126. |
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| Publishing Information: | Fayetteville: Arkansas Agricultural Experiment Station, University of Arkansas Division of Agriculture |
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| # of Pages: | 6 |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Dwarf bermudagrasses; Fertilization program; Foliar uptake; Golf green maintenance; Nitrogen uptake; Urea nitrogen solution
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| Abstract/Contents: | "Foliar fertilization often comprises a significant portion of the total annual nitrogen (N) applied to putting greens. Despite the prevalent use of this N fertilization method, turfgrass scientific research efforts devoted to foliar absorption have been limited. Most glaringly, there have been no studies to date that document foliar uptake of N in a real-world, field setting. This study was initiated to evaluate the efficiency of this practice in the field and address the factors that may affect the foliar absorption process. A 15N isotopic tracer field study was conducted to compare seasonal uptake of foliarapplied nitrogen by Penn A-1 creeping bentgrass and Tifeagle ultradwarf bermudagrass when managed for putting green utility. 15Nlabeled urea (46-0-0) was applied monthly, May through September, at rates of 0.10 lb N/1000 ft2 and 0.25 lb N/1000 ft2. Both species proved receptive to foliar uptake of urea-N, and absorption into plant tissues happened rapidly. A range of 24-57% of the fertilizer N applied was recovered in leaves/ shoots at 1 h after treatment, while peak foliar absorption was generally observed at 4 h after treatment. Foliar uptake, when measured as a percentage of N applied, was significantly reduced at higher application rates on both species. Month of year significantly affected foliar absorption by creeping bentgrass. This was seen as a progressive reduction across the season in the percentage of N applied and recovered in creeping bentgrass plant tissue (May = 59%; September = 37%). However, no seasonal effect was observed on ultradwarf bermudagrass as percent foliar absorption remained fairly constant (45-50%) throughout the five months of this study." |
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| Language: | English |
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| References: | 9 |
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| Note: | "May 2009"
Pictures, color
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Stiegler, C., M. Richardson, J. McCalla, and J. Summerford. 2009. Direct measurement of foliar absorbed urea-nitrogen following application to putting green turfgrass species. Ark. Turfgrass Rep. 2008. p. 121-126. |
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| Web URL(s):
http://turf.uark.edu/research/research%20series/568/Direct%20Measurement%20of%20Foliar%20Absorbed%20Urea-Nitrogen%20Following%20Application%20to%20Putting%20Green%20Turfgrass%20Species.pdf
Last checked: 06/30/2009
Requires: PDF Reader |
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