TY - CONF ID - orgprints8172 UR - http://orgprints.org/8172/ A1 - Tamm, Dr Lucius A1 - Amsler, Thomas A1 - Schaerer, Hansjakob A1 - Lévite, Dominique A1 - Häseli, Andreas TI - Current downy mildew control strategies in Swiss organic vineyards Y1 - 2006/// N2 - The currently used downy mildew control strategies in vitis vinifera in Switzerland are based on the use of acidified clay products combined with copper and sulphur. Data from 1997-2003 show that acidified clay products are a valuable alternative to control downy mil-dew of grapevine in conditions of medium rain fall, good spray timing and with a good application tech-nique. The limits of these products show under heavy rain conditions and when there is high disease pressure. AV - public ER -