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| I want to apply this next year to control the flathead apple borers infested my trees, but I've seen conflicting advice. The product is sold here to control emerald ash borer, but it's not listed for use on fruit trees. otoh, I've seen a drench online listed for fruit trees. Is the difference solely in the concentration of the pesticide? Can I use the emerald ash borer product on fruit trees at some concentration? Or is there an actual difference in the product? Don't want to go producing Wicked Stepmother apples. |
Follow-Up Postings:
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| I can't tell you what to use for apple or at what rate. But I'm pretty sure nearly all commercial citrus orchards are treated with that material. It's used to control the vector of citrus greening disease. There must be information on line about citrus. I think the material is being recommended in CA for homeowners to try to limit the spread of the disease to commercial citrus. |
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| The arborist who treats the ash trees with a drench opines that the material would produce toxic fruit, but he's no expert on fruit trees. If I have to buy it online to get a product listed for fruit with directions for the proper concentration, I'd like to know how much to get. I don't think any of my trees are safe. |
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- Posted by Appleseed70 6 MD (My Page) on Tue, Sep 30, 14 at 4:19
| There are Imidacloprid drenches available for fruit trees including apples...I've seen them. It's the poisonous fruit that has kept me away. Surely testing has not revealed traces of the pesticide or it wouldn't be available. On the other hand...how could it not be in the fruit...that's my question. Furthermore...if it is indeed not in the fruit...then how effective could it really be? |
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| There are a lot of questions here. For example, would the drench cause the pollen to contain the pesticide. Neonicotinides are very toxic to bees. I'd think that the best practice would be to withhold the drench until after the pollinating season is over. But I'm the one, with my family, who'll be eating all this fruit. Not a question of one or two apples but hundreds of them. There could be a multiplier effect. |
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| I'm not a big fan of using pesticides, but red neck cane borers caused me to take more drastic measures. I have used Macho 2.0FL, which is a generic version of imidacloprid, on some of my trailing blackberries to prevent red neck cane borer damage. Without using it, I probably wouldn't be able to grow them. Imidacloprid is widely used on a whole range of fruits and vegetables, so it is very likely you have been eating produce that has been treated with it. With that said, using it requires careful timing to prevent incidental damage to pollinating insects, like honey bees. For blackberries, it is applied post-bloom. I highly suggest reviewing the IPM guidelines (attached). 'Admire Pro' is the brand name used in the IPM Handbook for imidacloprid. |
Here is a link that might be useful: Midwest Small Fruit Pest Management Handbook
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