IMMUNIZING HEALTHY PLANTS AGAINST DISEASE USING 2,6-DIHALO-ISONICOTINIC ACID DERIVATIVES

摘要

Method for the immunisation of healthy plants against plant diseases by application of active compounds of the formula …IMAGE… in which… Hal represents halogen,… X denotes oxygen or sulphur and… R represents hydrogen, C1-C6-alkyl, C1-C6-alkyl interrupted by an oxygen or sulphur atom, C1-C6-alkyl substituted by halogen, cyano or the radical COO-C1-C6-alkyl, unsubstituted C3-C5-alkenyl or C3-C5-alkenyl substituted by halogen, unsubstituted C3-C5-alkynyl or C3-C5-alkynyl substituted by halogen, unsubstituted C3-C6-cycloalkyl or C3-C6-cycloalkyl substituted by halogen or methyl, or a normal equivalent of a cation which is formed from a base or a basic compound,… to plants and/or their environment.