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Evaluation of tuber cooking quality in selected table potato cultivars cultivated under organic and conventional crop management
ŠPLÍCHALOVÁ, Veronika
The aim of this diploma thesis was to evaluate the effects of conventional and organic crop management on cooking quality of potatoes. In one-year potato field trials (year 2010) with different crop management (conventional versus organic), 13 table potato genotypes (Adéla, Bionta, Karin, KE 100/10, Laura, Madona, Magda, Princess, Red Anna, Rosara, Solara, Satina,Terka) were used. The cooking quality (i.e. colour of the flesh, consistency, mealiness, moistness, flavor and darkening) was subjectively assessed using sensory analysis according to VORAL (1996) method. Only structure of boiled potato tubers was significantly affected by different crop management (4.8 % from total variability). Genotypically declared cooking types in used potato genotypes were confirmed in both production systems.
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Reaction of certified seed and farming seed in selected variety potato
VANĚK, Petr
The main aim of this bachelor work was influence of certified seed and farmer seed in selected potato varieties. In 2008 attempts were established with certified seed and farmer seed. The selected varieties were evaluated by the number released plants, production of potatoes, proportion of market tubers and starch kontent in tubers. Comparisons were 4 varieties with different lenit of growing season {--} Magda, Adéla, Ditta, Bionta.
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Following the growth, development, and speeds the aging of selected forage grasses.
ROUBÍČKOVÁ, Markéta
The grasslands are in the Czech Republic a significant element of the landscape and also one of the essential components of diets of ruminants and horses. In connection with the production function of grasslands is an important forage quality, especially in dairy cows with high yielding. To create high quality roughage is essential for the optimal harvest of grass maturity date, which significantly affects the nutrient content, the energy and digestibility. Between 2009 and 2010 was monitored growth, development and the speed of aging in selected varieties of forage grasses. In the breeding station Větrov grasses were sampled, dried and then analyzed in a laboratory at the Department of Crop Production University of South Bohemia in the České Budějovice. Eighteen varieties of grasses collected in seven successive terms in the month of May and June were total analyzed. In all samples were laboratory way determined dry matter, ash, fiber and in selected varieties of grasses digestibility. Dry forage yields increased gradually. In the process of aging occurs between phenological for all the analyzed varieties of grasses, was increasing fiber content, which corresponded to the decreasing digestibility. The highest digestibility reached in the current term in the field of silage ryegrass Lonar and italian rye grass Prolog. The lowest digestibility was observed fescue Proba.
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