@inproceedings{orgprints8555,
           title = {Current downy mildew control strategies in Swiss organic vineyards},
          author = {Lucius Tamm and Thomas Amsler and Hansjakob Schaerer and Dominique L\'evite and Andreas H\"aseli},
            year = {2006},
             url = {http://orgprints.org/8555/},
        abstract = {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. 
}
}