Effect of sulphur and micronutrients fertilization on yield and fat content in winter rape seeds (Brassica napus L.)

Effect of sulphur and micronutrients fertilization on yield and fat content in winter rape seeds (Brassica napus L.)

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Three-year strict experiments with winter rapeseed were read more conducted in three experimental stations.In the research, winter rape fertilization with elemental sulphur (S) in the doses: 20, 40 and 60 kg S/ha, boron (B) - in the dose of 2 kg B/ha and copper (Cu) - 5 kg Cu/ha were applied.Microelements were introduced separately, in treatments B and Cu, as well as in combination B + Cu.The experimental soils featured low content of sulphate sulphur SO42--S and boron, medium and low copper content.Rapeseed fertilization with sulphur, boron and copper resulted in their increased concentration in plants.

Sulphur at 40 and 60 kg S/ha doses affected the increase in oilseed rape grain yield by 11-12% compared to the not fertilized treatment.The dose of 20 kg S/ha did not show any significant influence on yield.The yield increased by more than 10% in the comparison to the treatment without B and Cu, was obtained due to boron, as well as combination of boron and copper fertilization.A here significant increase in fat content, in relation to not fertilized treatment, ranking from 1.0-1.

4% dry matter, was recorded after fertilization with the highest sulphur dose - 60 kg S/ha, as well as after application of boron and copper fertilization.