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| Web URL(s): | https://dl.sciencesocieties.org/publications/aj/pdfs/76/6/AJ0760060934
Last checked: 12/09/2016
Requires: PDF Reader
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| Publication Type:
| Refereed |
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| Author(s): | Yust, A. K.;
Wehner, D. J.;
Fermanian, T. W. |
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| Author Affiliation: | Yust: Former Graduate Assistant; Wehner and Fermanian: Assistant Professors, Horticulture Department, University of Illinois, Urbana-Champaign, Illinois |
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| Title: | Foliar application of N and Fe to Kentucky bluegrass |
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| Source: | Agronomy Journal. Vol. 76, No. 6, November/December 1984, p. 934-938. |
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| Publishing Information: | Madison, WI: American Society of Agronomy |
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| # of Pages: | 5 |
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| Keywords: | TIC Keywords: Iron; Ferrous sulfate; Foliar feeding; Nitrogen fertilization; Fertilization rates; Clipping weight; Temperatures; Poa pratensis; Nitrogen; Iron chelates; Phytotoxicity; Color evaluation; Fertilization timing
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| Abstract/Contents: | "The goal of the professional lawn care industry is to provide the homeowner with a dark green weed-free lawn. Members of this industry are interested in techniques to enhance the color of a turfgrass stand in lieu of excessive N fertilization. The purpose of this research was to evaluate the use of foliar applications of Fe alone or in combination with N on the color response of Kentucky bluegrass (Poa pratensis L.). Iron sulfate or an iron chelate was applied at the rate of 1.1, 2.2, or 4.5 kg Fe ha-1 in combination with either 0, 25, or 49 kg N ha-1 to a mixed 'Columbia'/'Touchdown' Kentucky bluegrass turf growing on a Catlin silt loam (fine-silty, mixed, mesic Typic Argiudoll). Color ratings and clipping weights were determined on a weekly basis until treatment effects were no longer significant. In a separate experiment, both sources of Fe were applied at rates of 1.1 to 72.4 kg Fe ha-1 to Kentucky bluegrass to evaluate phytotoxicity. The color enhancement due to Fe applications without N lasted from several weeks to several months depending on the weather following application. Use of Fe during cool wet periods enhanced turf color for only 2 to 3 weeks and therefore, was considered of limited value. Iron applications during cool dry periods enhanced turf color for several months. The treatment of 2.2 kg ha-1 of Fe from iron chelate was judged to be the most effective Fe treatment because the color enhancement was usually equal to the provided by a 4.5 kg rate of either source but it did not result in any discoloration as was found with the 4.5 kg rate. Combining Fe with the 25 kg ha-1 rate of N resulted in color enhancement equal to that caused by applying 49 kg ha-1 of N alone. The results of the study indicate that combining Fe with N can result in acceptable turfgrass color with lower rates of N. No permanent damage was caused to turfs receiving Fe at rates up to 72.2 kg ha-1 although foliar phytotoxicity was observed." |
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| Language: | English |
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| References: | 11 |
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| See Also: | Other items relating to: IRON
Other items relating to: Foliar Feeding & Uptake |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Yust, A. K., D. J. Wehner, and T. W. Fermanian. 1984. Foliar application of N and Fe to Kentucky bluegrass. Agron. J. 76(6):p. 934-938. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/aj/pdfs/76/6/AJ0760060934
Last checked: 12/09/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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