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Působení aplikace hnojiv na bázi síranu amonného na výnos a olejnatost semen řepky ozimé
Vrtěl, Petr
This thesis follow up influence of fertilization on yield and oil content of oilseed rape (Brassica napus L.). There were used fertilizers based on ammonium sulfate in the regeneration (BBCH 26, spring) and production fertilization (BBCH 31) during vegetation phase of oilseed rape. The issue was solved as a two-year small-plot field experiment carried out in the vegetation seasons 2016/2017 and 2017/2018 at the Field Experimental Station in Žabčice. The following variants were included in the experiment: Control (CAN), Ammonium sulfate (AS), Ammonium sulfate with boron (AS + B), Ammonium sulfate with nitrification inhibitor (AS + IN). Each fertilization variant was applied either as regenerative fertilization (BBCH 26) or first production fertilization (BBCH 31). The yield of seeds and also their oil content was significantly influenced by the vegetation season. Yield in the vegetation season 2017/2018 were higher by 41 % than in the vegetation season 2016/2017 because of weather conditions. The oil content was higher by 4 % in the vegetation season 2017/2018. The yield of seeds and also their oil content were not significantly influenced by the fertilization variant or by the vegetation phase of application. The highest average yield 4,23 t/ha was variant Control. The Control also was the highest average oil content of 40,2 %. High temperatures during both years reduced the efficiency of nitrification inhibitor. Fertilization with a boron-containing fertilizer had no effect because of drought and pH.
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Stabilizované močoviny se sírou ve výživě řepky ozimé
Bartoš, Vojtěch
This thesis evaluetid the influence stabilized urea with sulphur on the content of mineral nitrogen in soil, water-soluble sulphur in soil and substitution single cells in plants. Further it was valueted the yield and the oiliness of seeds. The experiment was provided in two experimental locations Žabčice and Vatín form of a small-scale experiment in a business year 2013/2014. Following variants were used in the experiment: 1. ALZON 46 + SA (1:1) 100 %, 2. ALZON 46 + SA (1:1) 80 %, 3. ALZON 25-6S 100 %, 4. ALZON 25-6S 80 %, 5. urea + SA. Fertilizer ALZON 46 + SA (1:1) 100 %, ALZON 25-6S 100 % and urea + SA were applied in fertiliser rate of 194 kg N/ha. Fertilizers , where the rate was reduced of 20 % was applied in fertiliser rate of 155 kg N/ha. In the locality Žabčice was the content Nmin (4. 4. 2014) highest with the variant ALZON 46 + SA (1:1) 100 %. The content water-soluble brimstone (4. 4. 2014) was highest with the variant ALZON 46 + SA (1:1) 80 %. The maximum substitution single macro elements according to unorganical analysis of plants (4. 4. 2014) achieved the variant ALZON 25-6S 100 % a 80 %. Single variants of fertilization did not have a statistically meaningful influence on the yield and the oiliness of seeds. The biggest economical efficiency achieved the variant urea + SA. This variant 1 ha of manure makes a profit 17 947 Kč. In the locality Vatín was the content Nmin (28. 5. 2014) highest with the variant ALZON 25-6S 80 %. The content water-soluble brimstone (18. 5. 2014) was highest with the variant ALZON 25-6S 100 %. Maximum substitution single macro elements according to unorganical analysis of plants (28. 4. 2014) achieved the variant ALZON 25-6S 100 % a 80 %. Single variants of fertilization did not have a statistically meaningful influence on the yield and the oiliness of seeds. The biggest economical efficiency achieved the variant ALZON 46 + SA gr. (1:1) 100 %. This variant 1 ha of manure makes a profit 26 960 Kč.
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Stabilizované močoviny ve výživě pšenice ozimé
Ruška, David
The aim was to assess the effects of stabilized ureas on the nutritional status of winter wheat crop during the growing season, yield of grain and the qualitative characteristics of grain - bulk density, the content of N-substances, gluten content and sedimentation value. The results were then compared with the non-fertilized variant and with the variant with fertilizers without inhibitors. The experiment was conducted in the form of a small-parcel field trial at ŠZP in Žabčice in the farming year 2012/2013. Examined were the effects of seven following variants: 1. unfertilized variant, 2. fertilizer LAD applied in two dose, 3. urea applied in two doses, 4. urea applied in one dose, 5. fertilizer with urease inhibitor UREA Stabil, 6. urea with nitrification inhibitor ALZON 46, 7. combination of fertilizers ALZON 46 and UREA Stabil in ratio 1:1. The effects of fertilized variants on values of N-tester clearly dominate. Similarly, this applies also for the content of N-substances, gluten content and sedimentation value. In case of the yield, the results were not so clear. Between the highest and the lowest value (unfertilized variant) the difference was approximately 1 t/ha. Demonstrated was only the positive effect of nitrogen fertilization on increase of grain yield. The values for bulk density are very similar for all variants. Effects of all nitrogen fertilizers on the given characteristics were very balanced. Slightly better results were reached for fertilizers ALZON 46 and ALZON 46 with UREA Stabil (1:1).
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Stabilizovaná hnojiva s dusíkem a sírou ve výživě řepky ozimé
Svědirohová, Monika
This thesis examined the effectsof applied stabilized fertilizers with nitrogen and sulphur content of mineral nitrogen and sulfurin the soil at two experimental sites. Further, the effect of each variant of fertilizers on yield and oil content of winter oilseed rape. The problem was solid by form of small-plot field trial at the experimental sites Žabčice and Vatínin the marketing year 2012/2013. The experiment included the following variants of fertilization: 1. unfertilized, 2. ENSIN 100 % of the dose, 3. ENSIN 80 % of the dose, 4. ENTEC 26 100 % of the dose, 5. ENTEC 26 to 80 % of the dose, 6. DASA+DASA, 7. LAD (ammonium nitrate with dolomite) + ENSIN. Fertilizers ENSIN and ENTEC 26 containing DASA (ammonium nitrate and amonium sulphate) and nitrification inhibitor. For variants 2 and 4 was applied once the total dose of nitrogen (194 kg / ha) and variants 3 and 5 was applied, only 80 % of the dose (155 kg / ha) as a stage tillering fertilization. Variant 6 was fertilised by DASA without a nitrification inhibitor. DASA was applied (78 kg / ha of nitrogen) as a regenerative fertilization, as well as the of fertilization I. (58 kg /ha of nitrogen). For the production of fertilization II. was used fertilizer DAM-390 (150 kg /ha of nitrogen). Seventh variant combines Ammonium nitrate (78 kg / ha of nitrogen) is applied as a restorative fertilization and stabilized fertilizer ENSIN (116 kg / ha of nitrogen), which was applied as fertilizer production I. The experimental area was Žabčice Nmi content and Lead in soil at the beginning of stem elongation highest in the variant fertilized fertilizer ENTEC 26 100 % dose. The seed yield of winter oilseed rape had different variants of fertilization statistically significant effect. Oiliness was statistically lower in the variant ENSIN 100 %, ENTEC 26 % 80 and DASA + DASA. The greatest economic efficiency, option fertilization LAD + ENSIN. This variant 1 crown costs fertilization produces 3.63 crowns in seed yield. The experimental area Vatín the highest content of Nmin in the soil at the beginning of stem elongationon the variant fertilizing ENTEC 26 100 % dose. The seed yield of winter oilseed rape is statistically different only from the other variant fertilized variant, which was applied fertilizer. The oil content of the parameter is statistically different each variant of fertilization. After evaluating various options coefficient of efficiency was the most effective fertilizer ENSIN 80 % of the dose. This variant 1 crown fertilizer cosi creates seed yield 7.39 CZK.
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