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Různé formy síry ve výživě řepky ozimé
Procházka, Karel
The aim was to assess the effects of fertilising by a different forms of suplhur on the conten of the water - soluble suplhur in the soil, yield of seed and the oiliness of winter rape. The experiment was conducted in the form of a small-plot field trial at ŠZP in Žabčice in the farming years 2012/2013 and 2013/2014. There were 6 different variants enrolled in the experiment: 1. unfertilized variant, 2. LAD (ammonium nitrate with dolomite) + LAD, 3. DASA (ammonium nitrate and ammonium sulphate) + DAM 390, 4. DASA + DASA, 5. WIGOR + LAD, 6. WIGOR + DASA. Fertilizer DASA containing sulphate form and fertilizer WIGOR including elementary sulphur. All variants of experiment despite of unfertilized soil were fertilising with nitrogen (195 kg per hectare). It was divided to regeneration, the first and the second production fertilising. In the variant 5 and 6 was apllied 60 kg of Wigor S including elementary sulphur. In the variant 3,4 and 6 was apllied DASA containing sulphate form. Fertilizers including sulphur had got the positive effect on the conten of the water - soluble suplhur in the soil. Fertilising with sulphur hadnt influenced ratio between nutrients in plants of winter rape and hadnt increased the yield of grain. Values relating to oiliness of seed were statistical different. Grain of winter rape from unfertilizing parcel had got higher oiliness than grain from fertilizing parcel.
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Elementární a síranová síra ve výživě řepky ozimé
Bednář, Václav
This bachelor thesis is dealing with fertilization of winter oilseed rape with sulphur in elemental and sulphate form and it examines the effect of different variants of fertilization with sulphur containing fertilizers, which were applied in various phenophases. There was founded a small-plot field trial at the experimental field station of Mendel University in Brno, situated in Žabčice near Brno in the course of years 2014 and 2015. We compared yield and oiliness of the seeds of four variants: the first variant fertilized with elemental sulphur, the second variant fertilized with elemental and sulphate sulphur, the control unfertilized variant and variant fertilized only with nitrogen. There were not proved any statistically significant effects on yields between variants, even though both variant fertilized with sulphur proved increase in yields about around 26 % compared to unfertilized variant. Compared to the variant fertilized only with nitrogen had the variant fertilized with elemental sulphur 22,5 % lower yield and the variant fertilized with elemental and sulphate sulphur 23,1 % lower yield. Statistically insignificant was also effect on oiliness. Variant fertilized with sulphur proved approximately 5 % lower yields than unfertilized variant. In comparison to variant fertilized only with nitrogen had both variants by1,9 % and 1,3 % higher oiliness.
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