Use of succinate dehydrogenase inhibitors for controlling powdery mildew primary infections

Abstract

The present invention relates to the use of succinate dehydrogenase Inhibitors for controlling powdery mildew primary infections in crops and to a method for controlling those primary infections.

1 . A method for controlling powdery mildew primary infections in a perennial crop comprising applying a succinate dehydrogenase inhibitor to the perennial crop prior to the end of the previous vegetative cycle. 
     
     
         2 . A method according to  claim 1 , wherein the succinate dehydrogenase inhibitor is selected from the group consisting of fluopyram, isopyrazam, boscalid, penthiopyrad, penflufen, sedaxane, fluxapyraxad and bixafen. 
     
     
         3 . A method according to  claim 1 , wherein the succinate dehydrogenase inhibitor is fluopyram. 
     
     
         4 . A method according to  claim 1 , wherein the perennial crop is selected from the group consisting of apples, grapes, European gooseberry, chestnut, pecan nuts, cashew, papaya, mango, rambutan, citrus, hazel, pear, cherry, quince, apricot, plum, peach, nectarine. 
     
     
         5 . A method according to  claim 1 , wherein the crop is apples. 
     
     
         6 . A method according to  claim 1 , wherein said succinate dehydrogenase inhibitor is applied at a rate ranging from 1 to 200 g/ha—based upon the pure a.s. 
     
     
         7 . A method according to  claim 1 , wherein a composition comprising fluopyram and a further fungicide are applied to the crop. 
     
     
         8 . A method according to  claim 7 , wherein the further fungicide is tebuconazol. 
     
     
         9 . Method for controlling powdery mildew primary infections in a crop comprising applying a succinate dehydrogenase inhibitor in the mitochondrial respiration chain to said crop prior to the end of the previous vegetative cycle. 
     
     
         10 . A composition for controlling a powdery mildew primary infection in a perennial crop comprising a succinate dehydrogenase inhibitor and a second fungicide. 
     
     
         11 . A composition of  claim 10  wherein the succinate dehydrogenase inhibitor is selected from the group consisting of fluopyram, isopyrazam, boscalid, penthiopyrad, penflufen, sedaxan fluxapyraxad and bixafen. 
     
     
         12 . A composition of  claim 10 , wherein the succinate dehydrogenase inhibitor is fluopyram. 
     
     
         13 . A composition of  claim 10 , wherein the further fungicide is tebuconazol.