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Konopí v ekologickém systému hospodaření
Schejbal, Jiří
Hemp (Cannabis sativa L.) is highly usable and resistant crop which is being used and cultivated by mankind for thousands of years. Adding Cannabis to a list of addictive substances in 20th century has caused a decrease of worldwide cultivation except of countries with traditional cultivation and utilization. This Bachelor’s assignment summarizes informations about hemp with botanical, physiological and historical view and about cultivation technologies such as requirements for soil, nutrients or prospective soil preparation. Study is also focused on description of worldwide cultivation with emphasis on cultivation in Europe and description of agricultural engineering which differs in harvest and post-harvest processing of different parts of hemp. The study also summarizes basic description of hemp utilization in energetics, civil engineering or food industry with following ecological benefits which are described more closely in relation with agriculture. The final part is dedicated to proposal of sowing proces on ecological farm and its requisites.
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The technology of cultivation and fertilization hemp (Cannabis) and ways of utilization
JAROŠOVÁ, Markéta
Contemporary is Hemp (Cannabis sativa L.) considered as a very promising plant whose parts can be used almost completely. Hemp is grown especially for fiber and seed. The plant is good biodegradable, so it causes no problems with waste disposal. The root system is deep and loosens the soil and prevents erosion. Hemp accumulate heavy metals from contaminated soils.To achieve the economic benefit are suitable fertile , deep soils with good nutrient supply and neutral or slightly alkaline reaction. Average seed yield in the Czech Republic is 0.6 t ha-1 and 6-7 t ha-1 stem. This study focuses on summarizing information about the cultivation, fertilization and the possibilities of using hemp.The first part is devoted to the origin, botanical characteristics, morphology and anatomy and principles of cultivation. The second part deals with the chemical composition, effective substances and use of cannabis in various industries. In this work was proposed five years crop rotation period for a variety Bialobrzeskie, grown for seed and stem. Than were selected pre-crops suitable for business without animal production and determined doses of nitrogen, phosphorous, potassium and magnesium fertilizers and suitable harvest mechanization.
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Cannabidiol level in hemp (\kur{Cannabis sativa})
BOUDOVÁ, Miroslava
Hemp (Cannabis sativa) is a crop that people have grown for a lot of years ago. It is amazing by its almost versatile use, whether in medicine, food, industry and power engineering. The aim of this thesis was to evaluate the content of cannabidiol in different parts of hemp and the possibility of using these parts as a source of the compound. Morphologically distinct varieties - Bialobrzeskie and Finola were selected for the experiment. The Cannabidiol content was determined by high performance liquid chromatography (HPLC). Hemp roots, stems, male and female inflorescences and leaves were sampled for the determination of cannabidiol level. The highest content of cannabidiol was found in hemp flowers and leaves of Cannabis sativa. Therefore, theoretically, these parts of hemp grown for fiber could be used as a potential source of cannabidiol.
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Cannabinoid level in hemp (\kur{Cannabis sativa}) and legislation
PRAVDOVÁ, Martina
These days hemp is a the most discussed plant in the whole world because of the content of compounds with psychotropic effects. Utilization of Cannabis sativa as a crop is universal (a fibre, food, oil and energy crop) and appreciated mainly from ecological point of view. This work summarizes information about cannabinoid characteristics, about their interspecific and intraspecific variability in hemp, possibilities of cannabionoid application in medicine, risks of their abuse as a drug, summarizes legislation connected with Cannabis sativa growing and also regulations defining illegal human behaviour by manipulation with hemp. The work includes also a brief botanic charakteristic of hemp, history of hemp growing, requirements of Cannabis sativa on environmental conditions, information about formation and function of cannabinoids in the hemp plant, about the cannabinoid content in hemp products and about influences that change the cannabionoid content in plants.
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