Leaves are drying out and curling up. The leaf color is grayish and gold in color. There is new growth at the trunk of the tree. Fruit buds not developing, they turn yellow and drop.
Persian Lime Tree Problem
Certified GKH Gardening Expert
These articles may help: https://www.gardeningknowhow.com/edible/fruits/lime/reasons-and-fixes-for-lime-tree-not-producing-blossoms-or-fruit.htm