My peach trees have 1000 of little peaches but never mature. What do I need to grow them to maturity?

Question

The fruits turn brown and fall off.

Answer 1

A few deficiencies come to mind, but it could be a fungal issue. If you can get a picture, this would help me to get a better idea of what is going on. In the meantime, this article will help: https://www.gardeningknowhow.com/edible/fruits/peach/peach-tree-fruit-drop.htm