According to the Bonide Fruit Tree Spray product label you should make no more than 2 applications per year on apple trees. Please refer to the product label for complete instructions.
It is normal for some of the ingredients in the Bonide Fruit Tree Spray to settle to the bottom of the bottle. According to the product label: Shake product thoroughly before use. Contains micronic particles which settle upon standing and require re-blending by agitation.
The manufacturer has also informed us that adding a little warm (but not hot) water to the concentrate bottle and shaking/agitating will help to break up any settling at the bottom.
The Bonide Fruit Tree spray is known to settle after diluting with water. According to the Bonide Fruit Tree Spray product label "shake sprayer occasionally or agitate to keep spray particles in suspension during application. It is recommended to thoroughly agitate the sprayer before using"