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| Web URL(s): | https://listings.lib.msu.edu/iowat/1991.pdf#page=139
Last checked: 01/10/2017
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Ryan, J. N.;
Agnew, M. L.;
Christians, N. E. |
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| Author Affiliation: | Graduate Student, Research Associate, Horticulture Department; Associate Professor, Extension Turfgrass Specialist, Horticulture Department; Professor, Turfgrass Science, Research and Teaching, Horticulture Department, University of Iowa |
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| Title: | Plant and soil response to nitrogen fertilizer source |
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| Source: | 1991 Iowa Turfgrass Research Report. July 1991, p. 134-135. |
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| Publishing Information: | Ames, Iowa: Iowa State University |
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| Keywords: | TIC Keywords: Nitrogen; Fertilization timing; Leaching; Environmental effects
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| Abstract/Contents: | "Turfgrass managers have several nitrogen sources from which to choose. Quick-release sources provide fast green-up and are relatively inexpensive. Slow-release sources extend the feeding time by slowing the release rate of available nitrogen. Some advantages claimed from using slow-release sources are reduced chance of fertilizer burn, less volatiliztion, and less leaching. With the environmental concerns currently surrounding fertilizers and the leaching of nitrates into the groundwater, it is important to understand the possible differences among nitrogen sources as they pertain to nitrogen use efficiency and the movement of nitrates in the soil. This study will evaluate 8 fertilizer sources as to their effects on plant growth and nitrogen content in plant tissue. In addition, the movement of nitrates through the soil will be monitored. The study was initiated in the spring of 1991 on an established turf of 'Glade' Kentucky bluegrass mowed at two in. The following is a list of treatments: 1) CORON 28-0-0, 2) Nutralene 40-0-0, 3) Sulfur-Coated Urea 37-0-0, 4) Urea 46-0-0, 5) Ringer Lawn Restore 10-2-6, 6) Ureaform 38-0-0, 7) N-Sure 28-0-0, 8) ISU Experimental 10-1.5-.5, 9) Control - no fertilizer. Treatments will be applied at a rate equivalent to 1 lb N/1000 ft2 on four dates scheduled for May 2, June 1, August 15, and September 15. Measurements of plant growth will include weekly observations of visual quality, clipping yields, and chlorophyll content. Plant development will be monitored by measuring plant density, thatch depth, thatch organic matter content, rhizome weights, and root distribution. These measurements will be taken prior to the first treatment, in the middle of summer, and at the end of the season. Nitrogen content in leaf tissue will be measured weekly and nitrate content in the soil at several different depths up to 3 ft will be taken initially, in midsummer, and at season's end." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Ryan, J. N., M. L. Agnew, and N. E. Christians. 1991. Plant and soil response to nitrogen fertilizer source. Iowa Turfgrass Res. Rep. p. 134-135. |
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| Web URL(s):
https://listings.lib.msu.edu/iowat/1991.pdf#page=139
Last checked: 01/10/2017
Requires: PDF Reader |
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MSU catalog number: SB 433 .A1 I55 |
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