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Vliv stupně množení sadby na zdravotní stav a výnos brambor(Solanum tuberosum Wild.)
KÁRNÍKOVÁ, Martina
The Master's thesis is focused on the seed potato health and yields of particular varieties. The aim of the thesis was to determine seed potato health before planting, before harvest, after harvest and to evaluate achieved yields of particular potato varieties. The experiment started in 2019, in the field of a private farmer Mr. Petr Pošusta. 6 varieties were planted (3 consumer varieties and 3 industrial varieties). The varieties were grown on this farm as early as 2018 as certified propagation material of grade A. In 2019, as it was found, they complied with parameters for certified material of grade B. The crop health (diseases and pests) was being evaluated during the growing process. After the desiccation of the potato crop, samples were taken to determine the number, size and weight of tubers below the cluster and for health tests ELISA. The yields of particular varieties were determined from the farm weight books and compared with achieved values. The results show that seed potato health and yields are influenced by the weather, occurrence of vectors, degree of propagation, agricultural engineering and last but not least the resistance of the variety to viral diseases.
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The manifestation certified and farm seed at selected potato varieties
PÁVEK, Miroslav
The main aim of this thesis was to evaluate the manifestation of certified seed and farm seed in selected varieties of potatoes. The experiment started in 2015 on the estate of Agricultural faculty of the University of South Bohemia. Four varieties (Magda, Adéla, Laura, Satina) with different vegetation period were planted. The certified seed was used in step A and the farm seed was divided according to size and it was tested for the presence of virus diseases. It was established 32 plots. The harvest of testing plots was on 29th September 2015. Each plot was harvested into the separate bag. Then the size sorting was done and individual tubers were counted. Based on measured values were determined the tuber yield, the yield of table potatoes, the content of the starch and the average weight per tuber. It was also observed the number of emerged plants of each variety and the number of stems per plant. The obtained results show that the use of farm seeds in the first year doesn´t have to mean an immediate decline in yield but varieties Magda, Adéla and Satine even increased their average yield about 9 t/ha. Only the yield of variety Laura was higher in certified seed by 4 t/ha. It wasn´t proved the impact of the chosen seed to the content of starch.
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The manifestation of certified and farm seed potato
TROPPOVÁ, Halka
Thesis aims to evaluate the performance of certified and farming potato seed cultivars of Red Anna and Monika. Following aspects were evaluated: number of full-grown, tuber yield, the average number of tubers in a bunch, the average weight of tubers in a bunch, the average weight of one tuber and starch content. The experiment started in 2013 on the farm of Ing. Tomáš Dušička in Plasy. In the experiment there were used cultivars of Red Anna and Monika because of good reputation. Certified seed was used in reproduction level C2, farmer seed was gained in the same location. Tubers were planted on the 5th May 2013, using two row seed planter (row spacing 75cm and tuber distance 25cm). Tubers were planted in the height of 16cm. In the planted rows of field experiment there was marked area of 10m2 per repetition, which requires 45 full-grown bunches in the plot. Harvest of experimental plots was carried out manually since 15th to 17th September 2013. Each bunch was dug, then the total number of tubers in a bunch was counted. Finally, the whole bunch was weighted. Tubers were sorted into two categories by size using sieve (mesh size 40mm). Both categories were weighted. Study results reveal that in the first year of planting of own farm seed may not significantly affect the yield and starch content. In case of farm seed of Monika cultivar there was 12% increase in revenue and slightly higher yield of tubers for consumption.
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