Answer: Unfortunately, based on your description I am not certain what is happening to your tree. This type of symptom could be caused by a variety of factors such as over or under watering, overfertilizing, poor rooting, a disease such as mildew, or accidental exposure to chemicals such as herbicide, or planting in a site that is excessively hot and sunny such as a western exposure, for example. I would suggest you work with your local Rutgers county extension to obtain a specific diagnosis of the problem and based on knowing that, decide what to do. If a chemical control is needed, they will have the most up to date information on what to use and how/when is best to apply it.
In the meantime, take care to keep the soil evenly moist like a wrung out sponge, not sopping wet and not dried out. Also, do not overfertilze it. A spring time application of a slow release granular fertilizer (read and follow label directions for how much to use) and/or top dressing of compost along with using an organic mulch year round should provide adequate feeding for this tree.
Good luck with your tree!
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