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Sächsisches Staatsministerium für Energie, Klimaschutz, Umwelt und Landwirtschaft
Saxony
Postfach 10 05 101
01076 Dresden
Website: External link to the authority
Inhibition of biological nitrification for the protection of groundwater after lucerne upheaval
The project aimed to examine whether ribwort, mixed with lucerne or catch-cropped following wheat, could reduce nitrate leaching due to an inhibition of nitrification in soil.
In field trials on a deep soil in Saxony, mixtures of lucerne and ribwort as well as those of lucerne and meadow fescue were established. Additionally, the impact of weather conditions and N-availability to subsequent crops was assessed.
A mixture of lucerne with ribwort, especially with a relative seed percentage of 67% and 33% of the pure seed rate, increases the yield formation of the mixture and the field crops compared to a corresponding mixture of lucerne and meadow fescue. At the same time, ribwort, more than meadow fescue, reduces nitrate emissions after plowing. Due to its high competitive power, ribwort should only be sown at a seed rate of approx. 0.75 to 1.50 kg/ha in mixtures with lucerne, depending on the thousand-grain mass of the ribwort seed. The sowing depth should not exceed 1.5 cm, even on sandy soil.
Rural development 2014-2020 for Operational Groups (in the sense of Art 56 of Reg.1305/2013)
HTW Dresden
Friedrich-Liszt-Platz 1
01069 Dresden
Phone: 0351-462 2114
Email: knut.schmidtke@htw-dresden.de
2019
completed
163,779
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