Use of succinate dehydrogenase inhibitors and/or respiratory chain complex III inhibitors for improving the ratio of harmful to beneficial microorganisms

A method for improving the ratio of beneficial to harmful microorganisms, on a stone fruit selected from the group consisting of apricot, cherry, peach and nectarine,

• said method comprises applying 1 to 3,000 g/ha of fluopyram, or 1 to 3,000 g/ha of a combination of fluopyram and trifloxystrobin, to a stone fruit crop from which the stone fruit is obtained,
• wherein the ratio of beneficial to harmful microorganisms on the stone fruit after said applying is higher than the ratio prior to said applying,
• wherein the presence of a beneficial microorganism is not impaired or is increased and wherein the presence of a harmful microorganism is controlled, and
• wherein said beneficial microorganisms are selected from the group consisting of pink yeast, white yeast, yellow yeast, Bacillus spp., Epicoccum spp., white bacteria, yellow bacteria, Paecilomyces spp., Ulocladium spp, and combinations thereof, and
• said harmful microorganisms are selected from the group consisting of Botrytis spp, Rhizopus spp, Penicillium spp., Cladosporium spp., Aspergillus niger, Alternaria spp., Fusarium spp., Aerobasidium spp., Powdery Mildew Diseases, and combinations thereof.