Instead of pesticides, diluted sea vegetable extracts, full of minerals should be sprayed and the 'pest'' will not eat the apples... if the soil is balanced in minerals, not even ''weeds'' will grow.
''Pests'' are a symptom of an imbalanced soil. Balance the soil, pest will be gone.
Just like with human body... worms, bacteria solvents(i.e. ''viruses''), fungus, mold are SYMPTOMS of heavy metal overload, the body grows them to deal with the heavy metals. Get rid of the metals and the ''germs'' will be transformed into body builders, instead of detoxifiers.