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| Web URL(s): | https://listings.lib.msu.edu/iowat/1991.pdf#page=85
Last checked: 01/10/2017
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Kassmeyer, S. M.;
Agnew, M. L. |
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| Author Affiliation: | Associate Professor, Extension Turfgrass Specialist, Horticulture Department, Iowa State University |
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| Title: | The effects of core cultivation on the performance of four nitrogen fertilizers |
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| Source: | 1991 Iowa Turfgrass Research Report. July 1991, p. 80-82. |
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| Publishing Information: | Ames, Iowa: Iowa State University |
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| # of Pages: | 3 |
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| Keywords: | TIC Keywords: Nitrogen; Poa pratensis; Fertilizers; Coring
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| Abstract/Contents: | "This study compares the effects of core cultivation on the performance of four granular nitrogen sources. The study was established on May 20, 1988, and terminated in the spring of 1991. The turf was 'Park' Kentucky bluegrass that was established in the fall of 1987. The grass was mowed weekly at 2 in and all clippings were removed. Irrigation was applied at a rate of 1.5 in/week. Treatments included the five nitrogen treatments and two cultivation treatments. The fertilizer included Milorganite, Blue Chip, Scott's methylene urea (41-0-0), ISU experimental (natural organic), and a non-fertilized control. Cultivation treatments included core cultivation and non cultivated control. Treatments were applied on May 22, June 27, and August 15, 1990. Fertilizer was applied immediately following each cultivation treatment. This study was replicated three times in a randomized complete-block design with a two-way factorial. Individual plot sizes were 5 ft x 10 ft. Data collected included visual quality and clipping yields. Visual quality is based on a scale of 1 to 9, with 1 equivalent to straw brown turfgrass and 9 equivalent to a dense, dark green turfgrass stand. A rating of 6.0 was the minimum acceptable quality level. Clipping yields were collected on a weekly basis by removing all leaf tissue above 2 in in a 21 in x 10 ft area (17.5 ft2) down the center of each plot. Clippings were placed in paper sacks, dried, and weights recorded as grams/17.5 ft2. Visual quality data is presented in Table 40. There were no differences between cultivation treatments or fertilizer x cultivation interaction. All fertilizer sources consistently had better quality than the untreated control. Scott's 41-0-0 fertilizer greened up quickest in spring and maintained acceptable quality throughout the growing season. ISU Experimental Fertilizer performed very similarly to the Scotts product. Milorganite and Blue Chip had a consistently lower quality during the spring and summer. Milorganite quality was equivalent to the ISU Experimental product in the fall. Clipping yield data is presented in Table 41. ISU Experimental had the greatest total clipping production followed by Scotts 41-0-0, Milorganite, and Blue Chip. All fertilizers had greater clipping production when compared to the non-fertilized control. Core cultivation had a negative effect on May 22 and June 20. While this effect was noted on those days, it does indicate that cultivation prior to dry weather does have an effect on clipping production." |
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| Language: | English |
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| References: | 0 |
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| Note: | Article appears as abstract
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Kassmeyer, S. M., and M. L. Agnew. 1991. The effects of core cultivation on the performance of four nitrogen fertilizers. Iowa Turfgrass Res. Rep. p. 80-82. |
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| Web URL(s):
https://listings.lib.msu.edu/iowat/1991.pdf#page=85
Last checked: 01/10/2017
Requires: PDF Reader |
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MSU catalog number: SB 433 .A1 I55 |
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