Fungicidal compositions

Abstract

The invention relates to fungicidal compositions comprising as active ingredient a combination of components A) and B) as defined in the patent claims, to a method of controlling phytopathogenic diseases on crop plants using such a composition and to a method of protecting natural substances of vegetable and/or animal origin and/or their processed forms using such a composition.

What is claimed is: 
     
         1 . A method of controlling phytopathogenic diseases on useful plants or on propagation material thereof, which comprises applying to the useful plants, the locus thereof or propagation material thereof a combination of components (A) and (B) in a synergistically effective amount, wherein component (A) is a compound of formula I 
       
         
           
           
               
               
           
         
         wherein 
         R 1  is trifluoromethyl or difluoromethyl and 
         R 2  is hydrogen or methyl; or a tautomer of such a compound; and 
         component (B) is abamectin. 
       
     
     
         2 . The method according to  claim 1 , wherein component (A) is a compound of formula I, wherein R 1  is difluoromethyl and R 2  is hydrogen. 
     
     
         3 . The method according to  claim 1 , wherein component (A) is a racemic compound of formula Ia (trans) 
       
         
           
           
               
               
           
         
       
     
     
         4 . The method according to  claim 1 , wherein component (A) is a racemic compound of the formula Ic 
       
         
           
           
               
               
           
         
         wherein the content of racemic compounds of formula Ia (trans) 
       
       
         
           
           
               
               
           
         
         is from 65 to 99% by weight. 
       
     
     
         5 . A fungicidal composition comprising a combination of components (A) and (B) in a synergistically effective amount together with an agriculturally acceptable carrier, and optionally a surfactant, wherein
 component (A) is a compound of formula I   
       
         
           
           
               
               
           
         
         wherein 
         R 1  is trifluoromethyl or difluoromethyl and 
         R 2  is hydrogen or methyl; or a tautomer of such a compound; and 
         component (B) is abamectin. 
       
     
     
         6 . The fungicidal composition of  claim 5 , wherein the weight ratio of (A) to (B) is between 2000:1 and 1:1000. 
     
     
         7 . A method of protecting natural substances of vegetable and/or animal origin and/or their processed forms, which have been taken from the natural life cycle, which comprises applying to said natural substances of vegetable and/or animal origin or their processed forms a composition according to  claim 5  in a synergistically effective amount.