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Využití přírodních hydroabsorbentů při mimokořenové výživě máku setého
Jelínek, Mojmír
The aim of this thesis was to evaluate the effect of a combination of foliar application of sulphur together with a natural form of superabsorbent polymers (SAP) in the spring poppy variety (Papaver somniferum L.) Onyx. The effect of sulphur application in the form of ammonium thiosulphate and elemental sulphur, both without SAP and in combination with SAP, on crop yield was investigated in a field experiment on a total area of 1.25 ha in the locality of Bedihošt' municipality. The evaluation of the effect was mainly based on hectare yield, then germination and thousand seed weight (HTS) were monitored, the health status of the crop was evaluated and an economic evaluation was made both in terms of total cost and with respect to the application of sulphur and SAP alone. The best results were obtained in the plot where ammonium thiosulphate alone was applied, followed by the combination of ammonium thiosulphate with SAP. The results show a very strong correlation between yield and germination (r = 0.96). In contrast, the effect of SAP was not sufficiently demonstrated in this work. The overall economic evaluation when all costs were included was positive only for the application of ammonium thiosulphate without SAP, all other options were loss making. In a direct comparison of the variants with the calculation of only the effect of sulphur and SAP, the application of ammonium thiosulphate without SAP and with SAP came out positive, while elemental sulphur with SAP and without SAP came out negative.
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Možnosti ovlivnění technologické kvality cukrovky při uplatnění pomocných látek
Salazar Molina, Andrea Nataly
In diploma thesis called "Possibilities of affecting the technological quality of sugar beet by application of supplementary substances" is dealt with the sugar beet cultivation problems and sugar production. Above all, the individual agrotechnical factors affecting the quality of sugar beet are described. Furthermore, various possibilities of application of different kinds of foliar fertilisers, growth substances, elicitors and supplementary preparations that affect the yield and quality of sugar beet are mentioned. In the practical part are discussed the results of the use of the preparation NanoFYT Si and the foliar fertiliser K-Gel 175 on the growth, yield and quality of sugar beet during the vegetation period. The yield characteristics are evaluated, digestion and content of alpha amino nitrogen determined and sugar production per hectare calculated.
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Využití hnojiv skupiny CARBON ve výživě máku
Ježek, Jaromír
The aim of this thesis was the evaluation of the effect of foliar fertilization by CARBON fertilizers on seed production and health condition of poppy. The experiment was designed in three variants – the ,,control‘‘ variant (without of fertilizers), the first ‘‘fertilized‘‘ variant (fertilizers CARBONBOR Q + CARBON Zn) and the second ‘‘fertilized‘‘ variant (fertilizers CARBONBOR Q + CARBON Zn + CARBON Si). Fertilizers were applied in the phase of 8th – 10th leaf of poppy (DC 30) and the doses were 0.8 l/ha CARBONBOR Q (120 g B); 1.33 l/ha CARBON Zn (200 g Zn) and 0.75 l/ha CARBON Si (62 g Si). Application of fertilizers increased the amount of boron, zinc, nitrogen and potassium in plants of poppy. Production of dry matter was increased almost by 50% in fertilized plants. Fertilization has positively influenced plant health. The poppy seed-yield was increased after foliar fertilizer application between 4% and 6.6% compared to control variant.
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Píce jako primární zdroj selenu v potravním řetězci
Šišková, Daniela
Selenium (Se) is an essential mineral nutrient for animal and human growth. Defici-ency in this element is a worldwide nutrition problem. Lolium perenne and Trifolium pratense were enriched by selenium using foliar application. It is a way to enrich the feed of animals and human nutrition through animal products. Amounts of 0, 2, 4 and 20mg of Se m-2 were applied both as sodium selenate and as sodium selenite in water. Results showed that selenium concentration in forage was significantly enhanced dose dependently. For Lolium perenne at the highest concentration used, reaching concent-rations of selenium in selenate 3,1371mikrogramm/mg and selenite 5,5503mikrogramm/mg. For Trifolium pratense at the highest concentration used, reaching concentrations of selenium in sele-nate 11,6837mikrogramm/mg and selenite 4,939mikrogramm/mg. Foliar application of selenium was proven to be a good way to increase the selenium content of forage, but the assimilation process of selenium was simpler with selenate for Trifoilum pratense and with selenite for Lolium perenne.
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Možnosti ovlivnění technologické kvality cukrovky při uplatnění pomocných látek
Salazar Molina, Andrea Nataly
In diploma thesis called "Possibilities of affecting the technological quality of sugar beet by application of supplementary substances" is dealt with the sugar beet cultivation problems and sugar production. Above all, the individual agrotechnical factors affecting the quality of sugar beet are described. Furthermore, various possibilities of application of different kinds of foliar fertilisers, growth substances, elicitors and supplementary preparations that affect the yield and quality of sugar beet are mentioned. In the practical part are discussed the results of the use of the preparation NanoFYT Si and the foliar fertiliser K-Gel 175 on the growth, yield and quality of sugar beet during the vegetation period. The yield characteristics are evaluated, digestion and content of alpha amino nitrogen determined and sugar production per hectare calculated.
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