This site contains a reference list of crop management chemistries used in commercial tree fruit production.
As of April 2016, all of these are registered for use in Utah, and Utah growers have reported successful results with each of these.
This is not meant to be a comprehensive list of all materials registered for use on tree fruits, and inclusion in the list is not an endorsement of these products by Utah State University Extension.
There may be errors in the information provided. Remember that the product label is the law regarding material use. Read and follow the label carefully.