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| Publication Type:
| Report |
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| Author(s): | Hemmersbach, Erika A. |
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| Author Affiliation: | Merowingerstr. 114, 5042 Erftstadt-Bliesheim |
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| Title: | Regelsaatgutmischungen in mehrjähriger Prüfung II. Narbeneigenschaften |
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| Translated Title: | Standard seed mixtures put to the test for several years [ II.] Sward Properties |
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| Article Series: | Regelsaatgutmischungen in mehrjähriger Prüfung |
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| Translated Series Title: | [Standard seed mixtures put to the test for several years] |
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| Source: | Rasen-Turf-Gazon. Vol. 16, No. 2, June 1985, p. 38-47. |
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| Publishing Information: | Bonn-Bad Godesberg, Hortus Verlag |
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| # of Pages: | 10 |
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| Keywords: | TIC Keywords: Festuca rubra subsp. rubra; Lolium perenne; Festuca rubra subsp. commutata; Festuca rubra subsp. trichophylla; Poa pratensis; Festuca ovina subsp. duriuscula; Agrostis tenuis; Gerlachia nivalis; Corticium; Trifolium repens; Drechslera; Dollar spot; Seed mixtures; Capsella bursa-pastoris; Microdochium nivale
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| Abstract/Contents: | Reports the results of a 1980-83 commercial seed mixture comparison test conducted by the German Turf Society. Twenty-two variations of three commercial mixtures were tested (RSM-2, RSM-3, RSM-4). These three seed mixtures were based upon the principles of an earlier mixture (RSM-80). The three mixtures were selected from different usage types. RSM-4 was a sports turf mixture. The tests were conducted in six different locations. The qualities evaluated were sward density, appearance, weed infestation, and diseases. The report includes 20 detailed tables of results for soil types, locations, % grass type in each, seeding, appearance, etc. Turf appearance varied with location and showed a rank relationship with Hohan-Rott having the best appearance. The plots of RSM-2 were rated as having the best appearance overall with RSM-4 receiving average ratings because of its coarse appearance. The effects of weather showed clearly at all locations. The evaluation showed that all mixtures tested had a high quality appearance and one could not be recommended more than another. Turf density of the plots also varied with the location. The test plots of Heidelberg were closest to the desired carpet-like density. Within a location the sward densities were relatively equal. The differences in density between locations were greater than the differences between seed mixtures. In view of the experimental results it was difficult to make a differentiated statement concerning the infestation of fungi. The attacks were periodic and damaged the primary grass in the sward. The plots were affected by Corticium, Fusarium nivale and at Hohen-Rott by Helminthosporium and Dollar-spot. Plots of RSM-2 were damaged most by Fusarium nivale and plots of RSM-3,4 were most suceptible to corticium. The great suceptibility of Festuca rubra var. Ruby, F. rubra var. Novorubra, and F. rubra var. Reptans to Corcitium was of only limited noticability in plots of RSM-2. At Hohen-Rott dollarspot primarily damaged RSM-2. Because of the fertilizer used, little weediness was expected. Tested locations showed considerable differences in weediness; partially due to the type of test arrangement developed. Dirkopshof and Hamburg sterlilized before seeding or test plots; however, the rest did not. Berin reported an initial weediness; of Atriplex ssp., Axabidopsis thaliana, Capsella bursa pastoris, and Erophila verna; so high that in May 1981 a mechanical weed control through digging was necessary. A strong initial weediness of Chenopodium appeared in Hohenkammer. White clover was promoted throughout the region by the dry summer of 1982. Hamburg reported that September-N-Gabe stopped the spread of White clover. In Berlin a chemical control with Bannel M (MCPA Plus DICAMBA) was necessary to destroy the white clover in 1982. In spite of the limited locational differences, the data from all years and locations were averaged. Thereby allowing the possible existing tendencies of the mixtures' weed displacement strengths to show themselves. Photos were taken every year of the test plots in Berlin. The photos allowed determinations of the sown varieties durability and eventual changes in mixture populations to be made. Over the test period there was a shift in population percentages for the mixtures. The lolium free RSM-2 and RSM-3 varieties had immigrations from Lolium perenne of varying strengths. In the RSM-3 groups the proportions of Red fescue were up to 80% of the total amount. The slightly acid soil of the test locations encouraged the presence of the Red fescue. The proportion of Agrostis tenuis showed important shifts. The original portion of 4% worked so strong a displacement on the mixture components of RSM-2 that by 1983 up to 50% common bentgrass was established in the plots. In RSM-3 plots, however, the Bentgrass could not succeed. In the Lolium containing varieties of RSM-4, Perennial Ryegrass retained the dominance due to its high displacement strength. In all plots of RSM-4 variations there was a reduction in the proportions of Poa pretensis. The slightly acid soil at Berlin was not beneficial for the Kentucky Bluegrass. |
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| Language: | German |
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| References: | 15 |
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| See Also: | See also part 1: "Regelsaatgutmischungen in mehrjähriger Prüfung - II. Narbeneigenschaften" Rasen-Turf-Gazon, 15(3) September 1984, p. 79-84 R = 481 R=481 |
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| Note: | Tables
Abstract appears in German, English, and French |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hemmersbach, E. A. 1985. Regelsaatgutmischungen in mehrjähriger Prüfung II. Narbeneigenschaften. (In German) Rasen Turf Gazon. 16(2):p. 38-47. |
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