Use of succinate dehydrogenase inhibitors for controlling powdery mildew primary infections

1. A method for controlling powdery mildew primary infections in an apple crop comprising applying fluopyram to the apple crop prior to the end of a vegetative cycle,

wherein the fluopyram is applied to the apple crop prior to abscission of leaves, and

wherein the powdery mildew primary infections are controlled for a year after application of the fluopyram,

wherein the fluopyram is applied at a rate ranging from 18.5 to 50 g a.s./ha/m c.h.

2. The method according to claim 1 , wherein the fluopyram is applied to the apple crop prior to maturation of fruits for harvesting.

3. The method according to claim 1 , wherein the fluopyram is applied to the apple crop prior to a closing process of end buds of extension shoots.

4. A method according to claim 1 , wherein the fluopyram is applied to control Podosphera leucotricha in an apple crop.