Apple trees are under siege from yet another source

While working on the deer netting yesterday, I saw that the upper leaves had a lot of Japanese beetles on them.

Although it's not an organic solution, I bought and set up a couple of Japanese Beetle traps as a short-term fix.  I need to investigate a long-term, organic solution.  I'm hoping that I can lure predatory insects and birds to the property to address the problem for good.