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Q&A: Mixing Pesticide Sprays
Answer: It's not a good idea to mix pesticides. There might be a chemical reaction between the compounds, or the combination could be phytotoxic (react with the sun to burn leaf surfaces). Be sure to identify the cause of any problems you are having, then choose the proper pesticide for the job, following label directions carefully. There are some commercial mixes available; these have been tested for safety.
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Posted Comments:
06-27-2008 14:49
Candice wrote:
Mixing Pesticides
As a thirty year master gardener, I have mixed pesticides for single spray application for all those years. The same rules apply to mixing then applying as applying and mixing on the plant which can also result in washing off what you previously applied with each subsequent spraying. To determine if you can combine whatever pesticides you wish to combine, contact the manufacturer or your county cooperative extension service. Another hint, I always add a squirt of dish detergent to breakup oils on the plant leaves and assist the spray to adhere, something I learned from my county cooperative extension agent.
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