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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
A new approach to fertilization and weed control in organic rapeseed production
Domestic demand for organic rapeseed oil currently exceeds domestic supply. Among the reasons for the gap between demand and supply are low and volatile yields in organic oilseed rape production, pests like the pollen beetle (Brassicogethes aeneus), an insufficient nitrogen supply during crop establishment and a widespread weed infestation in autumn. As previous research has shown, early harvested and pelletised fodder legumes (especially white clover) can serve as a good plant-based N-fertilizer in organic farming. Based on these results the operational group will evaluate the effects of such legume pellets on winter oilseed rape. The aim is to develop a new N-fertilization strategy for rapeseed production on organic crop farms – a strategy that improves crop establishment, reduces weed infestations and increases grain yields.
The practiced fertilization of rapeseed under the four investigated environmental conditions (two sites, two years) effected a plant N uptake until the end of the vegetation period in the year of seeding between 5% and 109 % above that of the respective unfertilized control. Irrespective of the fertilizer placement method the amount of applied and available N met the plants´ demands. No significant differences occurred in weed emergence and related N uptake among the placement treatments. When compared to manure treatments, the fertilization by means of legume pellets effected similar or in parts significantly better/higher (i) plant performance in autumn and (ii) grain/oil yields.
Outdoor horticulture and woody crops (incl. viticulture, olives, fruit, ornamentals)
Rural development 2014-2020 for Operational Groups (in the sense of Art 56 of Reg.1305/2013)
Hochschule für Technik und Wirtschaft Dresden (HTW)
Friedrich-List-Platz 1
01069 Dresden
Phone: 0351-462 2114
Email: schmidtke@htw-dresden.de
2015
completed
48,681
DED21 Dresden, Kreisfreie Stadt
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