Hi -
I need to spray my apple trees for coddling moth. How many days before rain is forecast can I spray it and still have it be useful? I ask bec...
Knowledgebase
Spinosad before rain? After rain? #752329
Asked May 26, 2021, 3:41 PM EDT
Hi -
I need to spray my apple trees for coddling moth. How many days before rain is forecast can I spray it and still have it be useful? I ask because it's supposed to rain tomorrow and my wife is after me to get the trees sprayed.
Thanks!
Marion CountyOregon
Expert Response
If there are any instructions regarding spinosad regarding use under specific environmental conditions it would appear on the label. Generally speaking if a pesticide is allowed to dry after application it should retain efficacy. I include a link to information about this insecticide and as you can see, it's actually sunlight that is more important than water in degrading this product. http://npic.orst.edu/factsheets/spinosadgen.html
Based on information on emergence of codling moth, this week would be good for an initial application.