The current study has been conceived to draw attention to the factors that should be avoided in the production of cereal grains (such as high doses of nitrogen) by analysing differences in cereal grain contamination with mycotoxins DON (deoxynivalenol) and ZEA (zearalenone), depending on methods of wheat production. We studied the occurrence of DON and ZEA at very different production intensities in the 'Reska' and 'Savinja' wheat cultivars which were grown in a long-term field experiment (designed in 1992) at Jable near
In a long-term field trial IOSDV at Jable near Ljubljana (SLO) the impact of mechanical resistance of wheat stem to breakage and its dependency of N fertilisation rate and organic fertilisation were examined. The investigation was undertaken at the beginning of the waxy growth stage (EC 81/82). Results confirmed that organic fertilisation has a moderate impact on the N-content (mg N g 71 DM) in wheat stem and on the bending moment (M) at stem breakage. The mechanical resistance of wheat stem to break was the strongest (M % 0.1 Nm) at low mineral N fertilisation (65 kg ha 71 ), while at the variants without mineral N fertilisation, bending moment was the lowest (M % 0.02-0.03 Nm). N-content in the stem increased exponentially to the highest N fertilisation step (195 kg ha 71 ), however there is not enough evidence to show that concentration of N in stem significantly effected bending moment at stem breakage.
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