Codling Moth – Facts for Fancy Fruit

Codling Moth

As reported in the last edition of Facts for Fancy Fruit, we achieved biofix in Lafayette on May 9. With a lot of cool weather since then, we have only achieved 170.5 degree days as of May 24. This is a year when monitoring degree days has the potential to greatly improve your levels of control of codling compared to spraying on a calendar based schedule. If, for example, you were spraying on a calendar basis and planning to use Imidan for codling moth control in your first cover spray, you would have put that application on long ago, even though no codling moth eggs were hatching. That would most likely have been a wasted application, since it’s unlikely that any insect pests were active that Imidan would control. My point is that timing is improved if you use moth catches and degree days to determine when to spray for codling moth.


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