Question
Hi. I have a gs apple tree maybe 4 years old. Is covered in apples but within the last 2 weeks, the leaves have started to curl and dry along with the apples basically withering. Today,1/2 of the tree's leaves are now brown. It's never been sick before and the trunk and branches are healthy. Help!

Answer
Hi Brandi...this is what I found for your problem..called leaf curl which also can damage your fruit...

Control: Select resistant varieties whenever possible. Leaf curl can be controlled by applying sulfur or copper fungicides. Spray the entire tree after 90% of the leaves have dropped in the fall, and again in the early spring, just before the buds open. Keep the ground beneath the trees raked up and clean, especially during the winter months. Prune and destroy infected plant parts as they appear. If leaf curl is severe, growers must maintain tree health and vigor by cutting back more fruit than normal, watering regularly (avoiding wetting the leaves if possible), and applying extra nitrogen fertilizer.  

There is also an organic product called Atomic Grow that can be used in place of chemicals...kathy