|
|
Reaction of starch processing potatoes on application of Lyckeby concentrate fertilizer
DOUBEK, Martin
Lyckeby concentrate is a new organic fertilizer made from waste tuber juice in the production of potato starch. The aim of the diploma thesis was to evaluate the effect of this fertilizer on selected varieties of starch potatoes. Two varieties Euroresa and Eurostarch were monitored, which are the most cultivated in the company Agrospol, Malý Bor a.s. The fertilizer was applied in two variants. The first variant was fertilized 2 t.ha-1 before planting and the second variant had a dose of 4 t.ha-1 before planting. It included an unfertilized control plot. In the experiment, the yield of tubers and starch, the starch content, the average weight of tubers, the average number of tubers and stems per tuft and the nitrogen content were evaluated. In the monitored experiment, both fertilization variants showed an increased yield of tubers and an increased yield of starch. The increase in tuber yield was influenced by the average increase in tuber weight and number. The Euroresa variety showed an increase in starch yield per hectare of 6.53% compared to the control. The Eurostarch variety had an increase in starch yield per hectare of up to 23.74% compared to the control.
|
|
|
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.
|
|
|
Starch and protein yield in potatoes for starch production
MIČKA, Michal
The aim of this thesis was to evaluate the starch and protien content in selected potato variarients in relation to nitrogen fertilization. The literature review is a general introduction to the given problem. In the year 2018, a one-year field trial was established where three starch yield varieties Anatori, Hermes a Ornella were observed. Nitrogen fertilizer was applied in two variants. The first variant was fertilized in the spring before planting with a dose of 73 kg N/ha, the second with a dose of 111 kg N/ha.In the experiment, tuber yield, average tuber weight, starch content, starch yield, dry matter content, and crude protein yield were evaluated. In the monitored year of 2018, which had above-average temperatures and on the contrary lowerprecipitation, the best evaluation was the application of higher nitrogen fertilizerswitha dose of 111 kg N/ha. Higher application of nitrogen fertilizers compared to lower dose increased potato tuber yield (t/ha), starch (%) and starch yield (t/ha).
|
|
|
Fertilization of table potatoes during vegetation solid form of nitrogen fertilizer and urea solution
PELÁN, Jakub
The thesis is focused on fertilization of the potato by leaf nutrition. The aim of the experiment was to evaluate how the selected varieties of potatoes respond on the application of leaf fertilizers. There were evaluated the effects of the application of urea, Energenu Foliar and Lignohumate NPK in varieties with different growing season Magda - very early, Adele - mid-early, Jasmine early to mid-early and late Laura. These varieties are evaluated by the proportion of emerged plants, tuber yield, proportion of consume size tubers, number of tubers in a bunch, the average weight of one tuber, number of stems per plant and starch content. From the results, it was found that all varieties responded positively to the application of leaf fertilizers. The effects on the potatoes were influenced by used variation of the fertilizer and by the different growing season of each potato variety
|
|
|
Evaluation of foliar feeding effect on starch and protein yield in potatoes
KAKOS, Michal
The aim of the study was to evaluate the effect of foliar nitrogen nutrition on yield and starch content and protein varieties of potatoes for starch with different length of the growing season. The literary review contains a general introduction to the topic and furthermore there is a summary of the existing development and production of potatoes both in the Czech Republic and abroad. In 2015 it was established one-year field experiment, where the effect was evaluated by 8% urea solution in variations in one application time and application in terms of solution 2 compared to the variant without the application of the urea solution. There were three sorts of potatoes with different vegetation period. It was a medium late variety Zuzanna and semi-late to late varieties Eurogrand and Eurostarch . At very specific 2015 to both precipitation and temperature be best evaluated albeit to a small extent, by the urea solution in the first term. Applications for the 2nd deadline had no significant effect on the production of starch and nitrogen compounds .
|
|
|
Applying foliar aplication of urea solution and bitter salt in growing table potatoes
ZAJÍC, David
The thesis is focused on the application of foliar fertilizers in the cultivation of potatoes. The evaluation was based on one-year small-plot trial plot, which manages Selekta Pacov. An attempt was based on a comparison of revenue, market share tuber size and number of tubers in a bunch of potatoes, which were fertilized solutions bitter mangnesium sulfate and urea. The results obtained in 2015 largely reflected the drought which occurred during potato vegetation. Of backed results showed that foliar fertilization influences crop, size of table potatoes and starch content.
|
|
|
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.
|
|
|
Application of pig slurry in nutrition and fertilization of potatoes
ŽELEZNÝ, Josef
The aim of the experiment was to evaluate the effect of pig slurry applications in the growing crop of potatoes for industrial processing during the growing season. In 2015, he was at an altitude of 560 m based experiment, where the effect was evaluated by pig slurry at a variety Eurostarch experiment was divided into three variants, each variant had four repetitions, was a variant without application of slurry, 1 times applied manure and 2 times applied manure. For each experiment evaluated the proportion of emerged plants, tuber yield, starch content, average weight 1 tubers and the number of tubers in a bunch. In the reporting year and the effect of the application of manure. From the experimental results it is evident that the manure contributing to higher tuber yield, starch content and increased weight of tubers as the variant with one and two applications of slurry.
|
|
|
Vliv hnojení močovinou a UreaStabil na výnos a kvalitu brambor
Pospíšilová, Markéta
The aim of my diploma thesis was to evaluate the effect of different doses of urea and UreaStabil fertilization on yield, tuber size and quality of potato tubers. A field experiment was carried out at the research station Valečov (Valkom Ltd.), the branch of the Potato Research Institute in Havlíčkův Brod during the years 2013 and 2014. Seven variants of fertilization were monitored in four repetitions of various doses of nitrogen fertilizer application as urea and UreaStabil and were compared to the unfertilized check variant. Two potato varieties, each with different lenght of the growing season, an early Karin and mid-early Red Anna, were used for comparison.
|
|
|
Reaction of selected potato varieties to foliar application of urea and bitter salt
HENŽEL, Vít
The effects of foliage nutrition facilitate efficient and immediate supply of nutrient needs during the vegetation period. The objective of this thesis is to assess the effects of foliage application of magnesium sulfate and urea for potatoes, that are intended for processing into starch production. There were two sorts of potatoes with different vegetation period under study, an early variety called as Bernard and semi-late variety called as Ornella. The foliage fertilizers were applied in three different variants. In the first variant the sorts of potatoes were fertilized by solution of magnesium sulfate, in the second variant by solution of urea and in the third variant the solution of magnesium sulfate and urea was used. The assessment of the experiment consists of yield on tubers, contain of the starch, yield on starch, the average amount of tubers per tuft, the average weight of tubers and profitability of used foliage fertilizers. In the year under the study the increased yield on tubers and on starch was detected in all three used variants. Both sorts of potatoes showed the best results when the solution of bitter salt and urea was applied. The increased yield on starch was reached through the increased yield on tubers preserving the high contain of starch. The yield of starch increased by 8 % in the semi-late variety of potatoes Ornella. The early variety of potato Bernard showed the increase of yield on starch by 14%.
|
guest ::
