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| Web URL(s): | http://usgatero.msu.edu/v09/n19.pdf
Last checked: 10/06/2010
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Branham, Bruce;
Henning, Shelby;
Mulvaney, Richard |
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| Author Affiliation: | Branham: Professor; Henning: Ph.D. Candidate, Department of Crop Sciences, University of Illinois, Urbana-Champaign, IL; Mulvaney: Department of Natural Resources and Environmental Sciences, University of Illinois, Urbana-Champaign, IL |
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| Title: | Optimization of foliar nitrogen nutrition to improve turfgrass performance under shade or mowing stress |
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| Source: | USGA Turfgrass and Environmental Research Online. Vol. 9, No. 19, October 1 2010, p. [1-5]. |
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| Publishing Information: | Far Hills, NJ: United States Golf Association, Green Section |
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| # of Pages: | 7 |
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| Keywords: | TIC Keywords: Ammonium; Application methods; Fertilizer evaluation; Foliar feeding; Nitrogen fertilization; Nitrogen uptake
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| Abstract/Contents: | "Foliar fertilization can be used to apply low amounts of nitrogen to turf. The name implies that the foliage is being fertilized, but this is an assumption. Our research examined the quantity of nitrogen actually absorbed into the turf foliage as a result of foliar applications. When applying foliar fertilizers, turf managers have the opportunity to choose the form of nitrogen to apply. Applying an ammonium fertilizer offers the potential for uptake of ammonium directly into the plant. Ammonium uptake through roots is somewhat rare since ammonium in the soil solution is rapidly converted to nitrate by heterotrophic soil microorganisms. The second part of our research project was to determine if foliar fertilization with ammonium-containing fertilizers leads to improved plant performance. Plant performance may improve if a significant amount of ammonium is taken up by plants because the plants will not have to use photosynthetic energy to convert nitrate back to ammonium. This extra energy can be used for additional growth, which is limited under low cutting heights used in golf turf management. Our results indicated that: Uptake by foliage from foliar-applied fertilizers is low and ranged from 14 to 37% of the applied nitrogen, depending upon environmental conditions and other factors. Spray volume has a significant effect on foliar uptake with higher volumes (80 to 100 gallons per acre, GPA) significantly reducing foliar uptake compared to spray volumes of 20 to 40 GPA. Spray adjuvants, regardless of type, improved foliar uptake compared to fertilizer applied without adjuvants. We were unable to measure any increases in plant performance (i.e. no increases in shoot growth, root growth, or turf quality) from foliar fertilization of bentgrass putting greens compared to traditional soil fertilization." |
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| Language: | English |
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| References: | 7 |
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| Note: | Summary as abstract
Pictures, color
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Branham, B., S. Henning, and R. Mulvaney. 2010. Optimization of foliar nitrogen nutrition to improve turfgrass performance under shade or mowing stress. USGA Turfgrass Environ. Res. Online. 9(19):p. [1-5]. |
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| Web URL(s):
http://usgatero.msu.edu/v09/n19.pdf
Last checked: 10/06/2010
Requires: PDF Reader |
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MSU catalog number: b3952822a |
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