%0 Conference Paper
%A Tamm, Dr Lucius
%A Amsler, Thomas
%A Schaerer, Hansjakob
%A Lévite, Dominique
%A Häseli, Andreas
%D 2006
%F orgprints:8172
%T Current downy mildew control strategies in Swiss organic vineyards
%U http://orgprints.org/8172/
%X 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.