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Hodnocení produkční schopnosti jitrocele kopinatého pro pícní využití
Valigurová, Jana
Dycotyledonous herbs for forage use are more often being used in agriculture. This diploma thesis focuses on one of the variants, namely ribwort plantain, which is considered a high-quality fodder and whose main feature is the ability to withstand abiotic stresses and provide high forage production even in the dry season. With the increasing frequency of drier periods, ribwort plantain has got great potential to become a more grown crop. Therefore were cultivated varieties of ribwort plantain, which provide higher yields and are more resistant to adverse climatic conditions than common flatweed type. The practical part of this work is divided into two parts. The first part of the experiment was grown in sand rolls, where the production of rootstock biomass of ribwort plantain (cv. Tonic) was compared with four other species: chicory (cv. Puna II), red clover (cv. Callisto), festuca arundinacea (cv. Kora) and alfalfa (cv. Zuzana). This experiment was set up in September 2019 and the total lenght of vegetation was 69 days, the experiment was fertilized twice during the vegetation. Leaves heights of all species were written down during the vegetation. After the end of the vegetation there was evaluated total lenght of the roots, the maximum depth of the roots and the length of the roots based on their thickness. These parameters were evaluated via WinRHIZO program. The maximum of root depth (18,2 cm) and root length in total (2 032 cm) were demonstrated for Tonic plantain. The second part of the experiment focused on the evaluation of the production capacity and the production of the root biomass of ribwort plantain took place on experimental plots at the Forage station in Vatín. This experiment was set up in June 2019 in three variants, where three following species where sown: ribwort plantain (cv. Libor), chicory and a mixture of plantain, chicory, cocksfoot, perennial ryegrass, meadow fescue, Kentucky blue grass, timothy, white clover, birdsfoot trefoil. A statistically significant difference was found only in the dry matter yield and the dry matter content, where lower values were written down for plantain Libor than for the grass mixture (dry matter yield lower by 0,45 t.ha-1, dry matter content in the first mowing lower by 5,06 %, in the second mowing lower by 2,22 %). There was also evaluated the content of crude protein (15,87 %) and fibre (ADF 22,58 % and NDF 26,77 %). In the spring 2020 was evaluated the production of root biomass like in the first part of the experiment using the WinRHIZO program. In plantain Libor there was found higher density of rooting in the upper layer of the soil (10,2 cm.cm-3) than in chicory (3,1 cm.cm-3).
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Vliv organického a minerálního hnojení na zlepšení degradovaných travních porostů v Národním hřebčíně Kladruby nad Labem
Rakova, Tatiana
The aim of the work was to find out the influence of mineral and organic fertilization on the change of the quality of forage and to change the botanical composition and the yield of the forage on the poor stand in the National stud farm Kladruby N. L. In Kladruby n. L. in the autumn of 2014 on land 9502 a small-scale experiment was set up to verify the effect of fertilization on botanical composition and the production of forage grass with low yields of forage. The application of fertilizers was carried out in autumn 2014 and autumn 2015 on parcels measuring 4.0 x 4.0 with three variants in three replicates. After application of fertilizers botanical composition of stands and production of forage on the area of 1 m2 in the middle of the parcel before the 1st harvest in 2015 and 2016 was evaluated. The production of forage was evaluated together with the botanical evaluation of the stands. After the drying of the forage and its grinding on the laboratory mill, the quality of the forage was evaluated. According to the composting results, the yield of forage in 2016 to 10.2 t/ha and the quality of forage quality positively affected. Grass meadow was dominated by grassland in fertilized mineral fertilization and compost of parcels, compost fertilization also supports the occurrence of dicotyledonous herbs. Mineral fertilization promotes the occurrence and growth of grasses. mineral fertilization, organic fertilization, forage quality, forage production.
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