Q.Snot on my fruit – annoying and troublesome
HELP!!!! My peach and nectarine trees are 5 years old this year. To date we have yet to have a successful crop due to one disease or pest or another. First couple of years it was the Chinese or Japanese moth. Next couple of years it was black rot. This year I spent countless hours researching sprays and nutrients, watering cycles, what mulches to apply, what not, etc. Thought God had really blessed us this year and was loving what I was seeing. Until I went out this morning to find what you see here. I cut one open and there were brown tracks and tunnels through the weeping peach. Please, is there anything I can do or do I just need to cut them down and start over?

There are a few culprits that can be the cause of the oozing.
This article will help you.
https://www.gardeningknowhow.com/edible/fruits/nectarines/nectarine-fruit-oozing.htm