My airlayered longan tree leaves are slightly turning yellow and droopy. The airlayer was done this year. Also, what does it mean when the leaves have sap coming out of it? Here's a few pics.

http://i113.photobucket.com/albums/n203/fh4me/DSC00730.jpg

http://i113.photobucket.com/albums/n203/fh4me/DSC00732.jpg

http://i113.photobucket.com/albums/n203/fh4me/DSC00731.jpg