Impact of source and application time of sulphur on the yield, oil content and protein content in winter oilseed rape
Čeh, Barbara | Hrastar, Robert | Tajnšek, Anton | Košir, Iztok
At the experimental field of Slovenian Institute of Hop Research and Brewing at Žalec an experiment was conducted in 2006/07 to detect the impact of fertilization by K₂SO₄ and gypsum on the yield, oil content, oil yield, protein content, protein yield and fatty acids composition at two different cultivars of oilseed rape (cultivar Smart and hybrid Toccata). In the conditions of the experiment the source of sulphur did not impact the yield, but a negative impact of spring fertilization by sulphur at cultivar Smart was detected. At hybrid Toccata positive impact of gypsum was detected when it was fertilized at sowing. Oil content was higher at cultivar Smart by 3.32% compared to hybrid Toccata. At cultivar Smart no source of sulphur impacted significantly the yield of oil, while at the conditions of the experiment positive impact of spring applications of sulphur on the yield of oil was detected at hybrid Toccata. Oil yield was higher at cultivar Smart compared to hybrid Toccata. Protein content was not impacted by sulphur fertilization. The share of linoleic acid was higher at hybrid Toccata by 2.2% to 2.4%, the share of oleic acid was higher at cultivar Smart by 2.2% to 3.1%, the shares of other investigated acids did not differ a lot between Smart and Toccata.
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