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| Web URL(s): | https://dl.sciencesocieties.org/publications/aj/pdfs/71/4/AJ0710040564
Last checked: 12/08/2016
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| Publication Type:
| Refereed |
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| Author(s): | Christians, N. E.;
Martin, D. P.;
Wilkinson, J. F. |
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| Author Affiliation: | Christians: Graduate Research Associate; Martin: Associate Professor, Agronomy Department, Ohio State University, and Ohio Agricultural Research and Development Center, Columbus, Ohio; Wilkinson: Director of Research, ChemLawn Corporation, Worthington, Ohio |
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| Title: | Nitrogen, phosphorus, and potassium effects on quality and growth of Kentucky bluegrass and creeping bentgrass |
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| Source: | Agronomy Journal. Vol. 71, No. 4, July/August 1979, p. 564-567. |
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| Publishing Information: | Madison, WI: American Society of Agronomy |
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| # of Pages: | 4 |
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| Keywords: | TIC Keywords: Quality evaluation; Interactions; Nutrients; Growth factors; Models; Soil fertility; Poa pratensis; Agrostis stolonifera; Nutrient solutions; Nitrogen; Phosphorus; Potassium
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| Abstract/Contents: | "Much of the previous work involving the effects of N, P, and K on the growth and quality of turfgrasses has not involved methods by which the interactions among these nutrients, could be evaluated. In the present investigation, a double cube, composite, statistical design was used to investigate the N, P, and K requirements of Kentucky bluegrass (Poa pratensis L. 'Merion') and creeping bentgrass (Agrostis palustris Huds., 'Penncross') under controlled environmental conditions in sand culture. Nitrogen treatments ranged from 6 to 294 ppm, P from 2 to 98 ppm, and K from 4 to 196 ppm in solution. The objectives of the investigation were to study the effects of a wide range of N, P, and K levels on turfgrass growth and quality, and to observe the nutrient interactions. Quadratic relationships for dry tissue production of Merion in response to increasing levels of N and K were observed. Tissue production reached a maximum at 125 ppm N and 144 ppm K. Dry tissue production of Penncross in response to N was also quadratic, with a maximum at 96 ppm. Tissue dry weight increased linearly with K to the 196 ppm level. The most desirable quality characteristics for Merion occurred at the N concentration of 96 ppm, and a P concentration of less than 2 ppm. Maximum response to K was not reached at the 196 ppm treatment. Penncross attained these characteristics at a N concentration of 54 ppm and less than 2 ppm P. Again, maximum quality had not been reached at a K level of 196 ppm. Potassium may play a more important role in turfgrass fertilization than was previously realized. Penncross demonstrated maximum root production at a solution concentration of 6 ppm N and 196 ppm K. Minimum production of roots occurred at 150 ppm N and 64 ppm K. An interaction between N and K in solution was observed in the quality response of creeping bentgrass. As the level of K was increased, less N was required to attain maximum quality. It is possible that addition of higher levels of K to this species can affect its requirements for N. Additional work under field conditions will be required to evaluate the importance of this interaction." |
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| Language: | English |
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| References: | 24 |
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| See Also: | Other items relating to: Potassium |
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| Note: | Partial reprint appears in Northwest Turfgrass Topics, 22(2) September 1979, p. 5
Figures
Tables
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Christians, N. E., D. P. Martin, and J. F. Wilkinson. 1979. Nitrogen, phosphorus, and potassium effects on quality and growth of Kentucky bluegrass and creeping bentgrass. Agron. J. 71(4):p. 564-567. |
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| Web URL(s):
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Last checked: 12/08/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: S 22 .A45 |
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