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| Web URL(s): | https://dl.sciencesocieties.org/publications/aj/pdfs/61/2/AJ0610020294
Last checked: 12/09/2016
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| Publication Type:
| Refereed |
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| Author(s): | Monroe, C. A.;
Coorts, G. D.;
Skogley, C. R. |
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| Author Affiliation: | Monroe: Former Graduate Assistant, Agronomy; Coorts: Former Assistant Professor, Horticulture: Skogley: Associate Professor, Agronomy |
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| Title: | Effects of nitrogen-potassium levels on the growth and chemical composition of Kentucky bluegrass |
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| Source: | Agronomy Journal. Vol. 61, No. 2, March/April 1969, p. 294-296. |
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| Publishing Information: | Washington: American Society of Agronomy |
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| # of Pages: | 3 |
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| Related Web URL: | https://dl.sciencesocieties.org/publications/aj/abstracts/61/2/AJ0610020294
Last checked: 12/09/2016
Access conditions: Item is within a limited-access website
Notes: Abstract only |
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| Keywords: | TIC Keywords: Nitrogen fertilization; Potassium; Growth factors; Chemical composition; Poa pratensis; Fertilization rates; Growth studies; Clipping weight; Root weight; Rhizomes; Chemical analysis
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| Abstract/Contents: | "The performance of an apomictic strain of Kentucky bluegrass under eight fertility levels was studied during l966 and l967 under greenhouse conditions. Fertilizers were applied as nutrient solutions. Treatments included two nitrogren (65 and l30 ppm) and four potassium (0, 1ll, 200, and 400 ppm) levels in all factorial combinations. Clipping weights, weights of underground plant parts (roots and rhizomes) and tops, vigor scores, tiller counts, blade widths, and rhizome lengths were taken as measures of growth. Amounts of N, P, K, and C in leaf tissue were determined by chemical analysis. All growth measurements, except rhizome lengths under l30 ppm N, were increased by potassium when compared to the 0-ppm K level. However, levels of K above 100 ppm were often detrimental under 65 ppm N and sometimes had little with 130 ppm N. N content of leaf tissue was increased by 130 ppm N while levels of K exceeding 100 ppm appeared to cause a slight, although significant decrease under both N rates. N and K had no significant effect on P content of leaf tissue. Added K increased the amount of K in leaf tissue up to the 200 ppm level. High nitrogen increased the K content significantly, but the increase was less than 0.2%. The balance between N and K appeared to effect growth responses. With 65 ppm N, 100 ppm K had the greatest effect on increasing growth measurements. With 130 ppm N, the balance requirement was less critical but the 200 ppm level gave the greatest growth measurement increases. The 400 ppm K level generally resulted in reduced growth regardless of N levels." |
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| Language: | English |
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| References: | 15 |
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| See Also: | Other items relating to: Potassium |
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| Note: | Brief summary appears in the Journal of the Sports Turf Research Institute, 1969, #45, pg. 105-106. [SB 433 .A1 S63]
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Monroe, C. A., G. D. Coorts, and C. R. Skogley. 1969. Effects of nitrogen-potassium levels on the growth and chemical composition of Kentucky bluegrass. Agron. J. 61(2):p. 294-296. |
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| Web URL(s):
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Last checked: 12/09/2016
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Access conditions: Item is within a limited-access website |
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MSU catalog number: S 22 .A45 |
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