Q.nectarines
My nectarine tree is looking great with a lot of lovely fruit. My problem is that most of the fruit are shriveling up. It would appear that I will lose all the fruit.
Thanks Ray

Have you tested the fruit to see if they are ready for harvest?
If the fruit is left on the tree too long, it may become too soft and appear shriveled.
Some disease could also cause damage to the fruit.
Here are some links with more information.
http://www.dpi.nsw.gov.au/__data/assets/pdf_file/0004/307129/Common-diseases-of-nectarines.pdf
https://www.gardeningknowhow.com/edible/fruits/nectarines/picking-nectarines.htm