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Evaluation of the clover growing system on farms and suggestions for improvement
WEINER, Vlastimil
The bachelor thesis is aimed at describing the system of clover cultivation, which is important for agriculture in the form of improving soil fertility and as a low-cost source of feed. The thesis mainly describes the meadow clover (Trifolium pratense L.) and alfalfa (Medicago sativa L.). In the first part, the importance of clover cultivation, its characteristics, morphological description and the method of forage conservation are described. Furthermore, the sowing machines suitable for sowing clover and the soil preparation before planting are presented. In the second part, the work focuses on the meadow clover stands (Bonus and Garant varieties) managed by MIRABO a.s. in the Pilsen region. During the year, both the method and date of establishment of the stands and the agrotechnique chosen for the overgrowing stands were monitored. The density of plants per 1 m2, health and yield of individual stands were monitored. All stands were destined for forage harvesting and were subsequently ensiled in silage troughs and silage bags. Subsequently, measures to improve the meadow clover cropping system on this farm were suggested from the data.
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The analysis of growing of legumes in selected farm and recommendations for it´s improvement
KASÍK, Jakub
The bachelor thesis deals with the cultivation of the main clover crops in the Czech Republic, which are alfalfa (Medicago sativa L.) and meadow clover (Trifolium pratense L.). In the first part of the thesis, the importance, characteristics, environmental requirements, agrotechnical measures and forage quality of these clovers are presented. The advantage of alfalfa is its hardiness and drought tolerance; it is still more damaged by waterlogging than by drought. In contrast, meadow clover has lower heat requirements and is better able to tolerate temporary waterlogging than a lack of moisture. Because of its slow initial growth, clover is often established in cover crops to compensate for forage yield in the year of establishment while suppressing weeds. The most suitable cover crop appears to be pea tendrils or a mixture with other crops, but in practice cereals are most commonly used. The second part focuses on the actual monitoring and evaluation of forage stands of meadow clover and alfalfa sown within the Zemědělské družstvo Čížová farming in the South Bohemian Region (potato-growing area). The method of establishment, number of plants per 1 m2 and yield of newly established stands of meadow clover were monitored in the operational plots. Meadow clover and alfalfa stands sown in the first crop year were also evaluated. Alfalfa had the highest dry matter yield (8.8 t ha-1), while clover had a slightly lower yield (8.2 t ha-1). The cover crop accounted for 60 % of the total dry matter yield of the established clover stands. It was found that at a stand density of 170 plants for alfalfa and 160 plants for clover, there should be no weeds in the stand.
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