PJA     
       ZESZYT Nr 2 / 2010    Abstrakty
        Volume No. 2/2010    Abstracts
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10. Yielding of Festulolium braunii/Trifolium pratense mixture, depending on the proportion of mixture components  -  Mariola Staniak

Abstract.
Potential of legume-grass mixtures production exceeds total yield of each component. The yield depends on species/cultivars composition as well as on their participation in sowing
mixture. The  aim of this study was to assess the effect of red clover cultivar and its proportion of the seeding mixture on the yield of mixtures with Festulolium.
  A field experiment was conducted in two three-year series in 2005–2007 and 2006–2008 at the Institute of Soil Science and Plant Cultivation –  Agricultural Experimental Station Grabów
(51o21’  N; 21o40’  E), in a split-plot design.  Two  factors were tested: percentage of red clover seeds in mixture (40, 60, 80% compared to pure sowing), and clover variety: Nike (2n), Parada (2n), Bona (4n), Jubilatka (4n). Sulino cultivar of  Festulolium was used in all mixtures.
  The botanical composition of sward was identifi ed during the study. Dry matter yields and crude protein yield from 1 ha were determined. The  results were statistically analysed in conformance with the design of experiment. The signifi cance of differences was examined using Tukey’s test at ? = 0.05.
  Festulolium is a species suitable for the mixtures with red clover. The yields of dry matter and crude protein of mixtures depended signifi cantly on the share of components.
 The mixture with the share of 80% of clover seeds and 20% of festulolium proved to be the best in terms of the yield. The least advisible was the mixture containing 40% of red clover and 60% of festulolium. Tetraploid varieties of red clover are more useful for mixtures with festulolium, especially under favourable weather conditions.

key words: legume-grass mixtures, mixture composition, Festulolium, diploid cultivars, tetraploid cultivars