Copper is the only effective fungicide authorised for a variety of important diseases in organic farming. Because of its environmental impact, it is restricted to 4kg/ha/year in the EU, and further restrictions may come while only a few alternatives are available on the market.
Solution
Larch (Larix decidua) extract (Larixyne) i acts as a contact fungicide against a range of oomycetes (downy mildews), ascomycetes (e.g. powdery mildew) and basidiomycetes. It is an effective addition to the toolbox of copper alternatives with good efficacy on important diseases.
Description
If the formulated Larixyne extract is authorised under EU regulation 1107/2009, plant protection products (PPPs) based on larch extract (Larixyne) can help to reduce cop-per use in organic grapevine production.
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