Karen,
in my opinion, the dormant oil spray is the most important of the year. But with that said I still spray every 10-14 days with Captan and Imidan up until mid July. Then I switch over to Captan and Sevin to control Asian beetles that really attack the softer apples, namely Paula Red, Honeygold, Honeycrisp and Zestar. Sorry I cant give you a chemical free recipe.
Trapper