Q.cherry trees
Can you pour a mixture of your fruit tree spray around the tree on the ground along with spraying the tree itself? Our cherries, when they start ripening, get a mold on them and rot before they are fully ripe. Or do you have another solution to this problem?

Cherry Tree fruit is susceptible to Brown Rot.
Here are some articles that will help with treatment and control methods.
https://www.gardeningknowhow.com/edible/fruits/peach/brown-rot-fungus.htm
http://www.ct.gov/caes/lib/caes/documents/publications/fact_sheets/plant_pathology_and_ecology/disease_control_for_home_cherry_orchards.pdf