http://orgprints.org/8172/ Current downy mildew control strategies in Swiss organic vineyards 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. Tamm, Dr Lucius Amsler, Thomas Schaerer, Hansjakob Lévite, Dominique Häseli, Andreas 8planthealth int_conf_joint2006_5 fibl-plant-protection-pathology Current downy mildew control strategies in Swiss organic vineyards 2006-05-09 Tamm, Dr Lucius; Amsler, Thomas; Schaerer, Hansjakob; Lévite, Dominique and Häseli, Andreas (2006) Current downy mildew control strategies in Swiss organic vineyards. Joint Organic Congress, Odense, Denmark, May 30-31, 2006. application/pdf