National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Effects of different intensities of fertilization to yield of selected species of energy grasses
GAZÁREK, Lukáš
The importance of renewable energy sources increases with increasing power consumption and heat generation while declining reserves of fossil fuels. For the Czech Republic in future could be a very important source of biomass electricity. Bachelor thesis in the first part literature review describes the importance of renewable energy sources and their different types and use in our country. In other parts of this work closer look at the use of biomass to produce electricity and heat. Eventually, the paper describes two selected species of grasses and energy to: Reed canary grass (Phalaris arundinacea L.) and Szarvasi - 1. In the end review of the literature deals with the individual plant nutrition macro- and microelements, and finally describes the fertilizer that was used in the cultivation plants specified above. In the practical part conducted experiments in three intensities fertilization. The first variant was called. Extensive when plants were fertilized. In the second variant was used ammonium sulfate, ammonium nitrate, superphosphate and triple potassium salt. The latter variant was fertilized digestate as a product of a biogas plant in which these plants are growing just as the input product. The measurement revealed some interesting facts. According dry matter yield responded Phalaris L. arundiacea best to fertilization with mineral fertilizers, poorer yields gave variant fertilized by digestate and lowest yields were recorded for extensive, or unfertilised stand. Elymus elongatus provided in its spring mowing best result in fertilized by digestate form and fall in intensive variant. Both plants provide higher returns in the spring mowing, mowing than in autumn. In the yield of fresh matter during the spring harvest proved the use of organic digestate, while the harvest of autumn fell the most intense flavor. According to the percentage of dry matter content is the best option appeared to be extensive with the exception of the autumn harvest Phalaris arundiacea when intense flavor gave the highest dry matter content.
Grass's utilization for energetic effects
HOSPODÁŘSKÝ, Radek
This thesis presents a comparison of energy and determination of the suitability of grasses for energy purposes. The labour has the characteristics of agricultural technologies and selected energy grasses. Furthermore, it describes harvesting and biomass yield, processing technology and uses of biomass. The application compares the selected types of energy crops and outputs are depicted graphically. According to the information gathered is the best energy crop for use Chinese Miscanthus (Miscanthus), since it has the highest yield, highest yield and calorific value. Remain at the 10 to 15 years. The disadvantage is its economic performance, but the difference in cost compared to other grass not as large as those of the pros of grass

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