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Efekt snížení dávky dusíku při použití hnojiv s inhibitory
Brabcová, Jana
This work was focused on the use of nitrogen fertilizers with inhibitors in full and reduced doses, which was supposed to simulate the achievement of one of the objectives of the Green Deal. The experiment took the form of a one-year small-plot experiment with winter wheat in Žabčice near Brno. The following variants were included in the experiment: 1. mixture of urea + ammonium sulfate (control), 2. Alzon neo-N (urea containing urease and nitrification inhibitor), 3. mixture of Alzon neo-N and Lovogran IN (ammonium sulfate with nitrification inhibitor) and 4. a mixture of Alzon neo-N and Lovogran IN in a reduced dose of 20%. Winter wheat (Triticum aestivum) was chosen as the test crop, for which the yields and quality parameters of the grain were monitored (bulk weight, nitrogen content, gluten content and Zeleny test value). The mineral nitrogen content in the soil was also monitored. The addition of inhibitors did not have a statistically significant effect on yield and grain quality. A statistically significant decrease in values occurred only in the variant with a reduced dose of fertilizer compared to the non-reduced variant, namely in the content of N-substances, gluten content and the value of the Zeleny test (sedimentation value). When comparing the variant with a reduced dose of nitrogen to the standard by fertilizing without inhibitors, no significant differences were found. Fertilizers with inhibitors can therefore ensure an unreduced yield of adequate quality even when a reduced dose of fertilizer is used. The results of the Nmin analysis proved the effectiveness of the inhibitors on the mineral nitrogen content in the soil, especially the influence of the urease inhibitors. The variant with a higher content of urease inhibitor (variant 2) showed a lower amount of ammonium nitrogen and at the same time a lower amount of total Nmin compared to the variants in the mixture in full and reduced dose (variants 3 and 4).
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Vliv formy a termínu aplikace dusíkato-sirného hnojiva na výnos a kvalitu ozimé pšenice
Kala, Petr
This thesis deals with the fertilization of nitrogen-sulphur fertilizers in different forms and terms of application and assesses their effect on the yield and quality of winter wheat grain. To find out the results was carried out a small-plot field experiment in Žabčice and Vatín. In the experiment were used these nitrogen-sulphur fertilizer: DASA, MAGNISUL and DASAMAG. Mentioned fertilizers were rotate as part of regenerative and the first production fertilizing with LAD. The LAD fertilizer was used for the control variant. In the second production fertilizing was used DAM-390 in all variants. The results of the field experiment were statically conclusive in all the evaluated criteria only in the comparison of the location. Statistical conclusive was not detected in the investigated factor “Variant of fertilization”. These results were significantly affected by the unfavorable course of the weather in the 2017/2018 growing season.
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Sladovnická kvalita zrna ječmene po mimokořenové aplikaci pomocných látek a listových hnojiv
Heža, Jakub
This diploma thesis focuses on the malting quality of spring barley grain after extra-root application of excipients and selected fertilizers. The theoretical part of this thesis is devoted to the factors influencing the yield and quality of grain. The practical part was focused on the evaluation of the influence of selected auxiliary preparations and foliar fertilizers on the yield and malting quality of spring barley grain. The issue was further explored in the form of both a small-plot experiment conducted on the land of Agrospol Velká Bystřice and a pilot trial in the locality of Hnojice in 2021. The experiment included the following variants: Control variant, 1. Lister Mo, 2. TS Impuls, 3. Aucyt Start , 4. TS Sentinel. Lister Mo and TS Impuls were applied in the developmental column phase (BBCH 31) and Aucit Start and TS Sentinel at the beginning of flowering (BBCH 50).vThe conclusion part of the diploma thesis summarizes and evaluates the fulfillment of the aim of the thesis.
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The spring barley yield and quality in terms of selected agricultural company
KANTOR, Martin
This Master thesis deals with the yield management evaluation and malting quality of chosen varieties of the spring malting barley in terms of half-working experiment in company "Kantor Václav - Agricultural businessman". There was chosen a stand of experiment and the values of yield management were observed, especially the number of plants, their offshoots and spikes per square unit, the quantity of grains in spikes, the weight of a thousand seeds and the yield. In case of the grain quality elements was rated a content of nitrogen substances, the drop above the sieve 2,8, 2,5, 2,2 mm and under the sieve 2,2 mm, then the content of amyloid, germination and its energy as well as the grain moisture. Among the rated varieties were placed: Malz, Sebastian, Laudis 550, Kangoo, Xanadu, Sunshine, Bojos, KWS Irina and Pionier. The results were filed in the tables and charts. The influence of variety on a different yield element was found out in the final comparison of all parameters. According to the aspect of the yield elements as well as the quality, the best values in this year taking experiment were reached by the Kangoo variety.
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Interactive effects of elevated CO2 concentration, drought, and nitrogen nutrition on yield and grain quality of spring barley and winter wheat
Surá, Kateřina ; Rajsnerová, Petra ; Veselá, Barbora ; Klem, Karel
The interactive effects of elevated CO2 concentration (EC; 700 μmol mol–1), drought stress, UV exclusion, and nitrogen nutrition were studied in open-top chambers located in the Bohemian–Moravian highlands (24 in total). Above-ground biomass at the time of harvest, grain yield, and grain quality parameters were studied in winter wheat (variety Bohemia) and spring barley (variety Bojos). The results showed that elevation of CO2 concentrations increased above-ground biomass and grain yield. Higher levels of nitrogen increased the stimulatory effect of EC on above-ground biomass and grain yield. In addition, UV exclusion stimulated the effect of EC. EC generally led to increased rates of photosynthesis and assimilate formation. Increased storage of starch in the grain led to an unbalanced proportion of proteins and a decrease in their relative content in grain. Similarly to grain yield and above-ground biomass, the decrease in protein content under EC was also more pronounced under UV exclusion. EC led also to reduction of other quality parameters, such as the Zeleny sedimentation test. This effect is more pronounced when nitrogen is not a limiting factor as well as under the effect of drought. The stronger effect under drought stress is probably due to increased water use efficiency.
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The comparision of winter wheat grain yield and quality
CIRHAN, Radek
Thesis topic: Assessment of wheat yield and quality. Three conventional varieties (Midas, Genius and Papageno) and one hybrid variety (Hyland) were subject to the test. The test was carried out in operational conditions of an agricultural plant in 2014. The assessed Midas and Genius varieties are classified as elite varieties in terms of baking quality and the Papageno variety and the hybrid Hyland variety are classified as unsuitable for dough production. The test was aimed at the assessment of the main yield elements, i.e. the number of spikes per m2, the number of grains per spike and the weight of a thousand grains. Another assessment parameter was the quality of grains of the assessed varieties.
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The quality and use of naked oats
FIŠER, Martin
The purpose of this bachelor´s thesis was summary of new knowledge about qualitative properties and possibilities of utilization of naked oats varieties and their comparison with hulled oat varieties. Naked oast excels especially in its high nutritional and energy value, in the content of essential amino acids, in high content of fats, vitamins and minerals and theirs high biological value together. These factors classify naked oats between the important components of foodstuffs for human need and between the important components of fodder for livestock too. The health significance is essential for grains of naked oat in foodstuffs and in food supplements. Naked oats finds using in many other branches of industry than in grocery only, naked oats is used, for example, in cosmetic industry, in pharmaceutical industry, in floristry possibly too. Relatively low yields of grains are balanced by a long-term, higher purchase prices which makes naked oats a strategic crop from economic aspect.
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