Mesa County:
Apple and Pear - The Codling moth is the insect in this area that causes wormy fruit. Thankfully we do not have the biostrain of apple maggot that cause so much trouble back east and in other parts of the nation. The first spray for the codling moth should have been applied within 10 days of full bloom. The second generation codling moth flight is expected on June 19 and an insecticide needs to be applied by that time.
The Peach Twig Borer causes damage to the fruit of peach, plum and apricot and causes new shoots on these trees to wilt and die. The first spray for this insect should be applied between June 10-15.
Western Cherry Fruit Fly: Based on the available information from Fruitvale and Redlands, it is time for the cover spray for this insect, especially in those areas.
Delta County:
Rogers Mesa
Apple and Pear - The second generation of the codling moth is expected on July 2-3. A spray should be applied by that time.
Peach, Plum and Apricot – The Peach Twig Borer spray should be applied between June 17-21.
Cedaredge
Peach, Plum and Apricot – The spray for the Peach Twig Borer should be applied between June 19-24.
For further information on insects and disease of stone fruit tree check out our publication at http://www.ext.colostate.edu/pubs/garden/02804.html .
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