The hot and dry weather in Georgia has been beneficial to the peach harvest because it keeps the diseases at a minimum, but this lack of rain will cause the peaches to be smaller as water causes the fruit to expand. The size and color of the peach are what sell, “People like large, really, brilliant red peaches. If you don’t have enough water in particular, you can not produce a larger peach.” said Phil Brannen, University of Georgia Extension fruit disease specialist.
https://specialtycropindustry.com/waters-importance-to-this-years-peach-harvest/