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Imprint
Reduction or replacement of copper-containing pesticides in organic hop
Project
Project code: 2809OE058
Contract period: 19.04.2010
- 28.02.2014
Budget: 145,958 Euro
Purpose of research: Applied research
In the years 2010 to 2013 a four-year research project was conducted to find ways to reduce the amount of copper used for the control of Hop Downy Mildew in organic hop growing. Copper hydroxides, copper oxychloride and copper sulphates were tested in low amounts of 2 und 3 kg/ha elementary copper, and in combination with plant strengtheners. The results demonstrate that a successful control of downy mildew in hops is possible by a reduced amount of 3 kg/ha copper. In combination with the tested plant strengtheners the control effect was even better throughout. Admittedly, these results apply only to bred cultivars that are tolerant to downy mildew infection and not to susceptible landraces, which however are not of importance in organic hop growing. A complete abandonment of copper products in organic hop growing in future is still not in sight.
Section overview
Subjects
- Organic Farming
Framework programme
Federal Organic Farming Scheme and other forms of sustainable agriculture (BÖLN)
