Question
QUESTION: We have been spraying the fruit since they began early spring to keep the worms away in the fruit,which does help to take care of the fruit.
How come this spray does not take care of the apple cedar rust? I thought that is one of the reasons we spray while the fruit is growing. Our apples looked good this year-some have the apple cedar rust and others do not. Why? What can we do to resolve this terrible looking yellow spots on our leaves. Thank you.

ANSWER: It depends on what the active ingredients are in the product you are using.  Can you respond back with what the active ingredients are in the product you are using.  It is possible that you are only treating with an insecticide.  A fungicide is required to prevent the cedar-apple rust.  Even is there is a fungicide in the product you are using, the disease may be sending in so many spores, it is overwhelming the tree.  I await your response.  Thanks.

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QUESTION: The spray I used is "A complete fruit tree spray" by Bonide Products. Ingredients-captan-related derivatives-malathion-carbaryl-petroleum distillate. Which I realize now is a insecticide. What do I need to use for the fungicide to get rid of the yellow spots on the leaves and will it get rid of the cedar-apple rust?  Thank you.

Answer
The Captan is a fungicide but is used mostly for fruit rots of peach and apple.  I would try Maneb fungicide next spring.  Begin your sprays when the tree is about 50% in bloom and continue to spray the tree every 10-14 days by rotating the Bonide product with the Maneb.  You will need the insecticide but the Maneb will do a better job of protecting the leaves from the cedar apple rust fungus.  You may need to do this pretty much until the fruit is almost full size.  There is a Pre-Harvest Interval (PHI) on the label of the Maneb which may be as long as 30 days, which means you will have to quit spraying the Maneb 30 days before you harvest the fruit.  I wish you good luck.