Safe to eat apples and blackberries grown in soil contaminated with manure containing Grazon??? - Ask Extension
The leaves of the fruit trees and the blackberry leaves twisted and turned brown on the edges, but survived. I am wondering if the fruit is edible or...
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Safe to eat apples and blackberries grown in soil contaminated with manure containing Grazon??? #878901
Asked July 26, 2024, 1:05 PM EDT
The leaves of the fruit trees and the blackberry leaves twisted and turned brown on the edges, but survived. I am wondering if the fruit is edible or poisonous for humans?
Multnomah County Oregon
Expert Response
Hello,
I looked at the label for the Grazon herbicide, and it mentioned the issue you have experienced - that manure from animals where the product was applied should not be placed on other crops since the herbicide can be transferred in this way and cause injury. It is a systemic product meaning that the herbicide moves within the plant and it has residual activity. The breakdown of these products varies on a number of factors including moisture, temperature, microbial activity, etc, therefore I wouldn't feel confident saying how long before it is safe to eat the produce. However, the National Pesticide Information Center's phone number is at the top of the article linked below, you can also give them a call to ask questions about that particular herbicide.
Below is some additional information about this topic:
http://npic.orst.edu/faq/garden-drift.html
https://extension.oregonstate.edu/catalog/pub/em-9307-herbicide-contaminated-compost-soil-mix-what-you-should-know-what-you-can-do
Best of Luck and thank you for using Ask Extension!
I looked at the label for the Grazon herbicide, and it mentioned the issue you have experienced - that manure from animals where the product was applied should not be placed on other crops since the herbicide can be transferred in this way and cause injury. It is a systemic product meaning that the herbicide moves within the plant and it has residual activity. The breakdown of these products varies on a number of factors including moisture, temperature, microbial activity, etc, therefore I wouldn't feel confident saying how long before it is safe to eat the produce. However, the National Pesticide Information Center's phone number is at the top of the article linked below, you can also give them a call to ask questions about that particular herbicide.
Below is some additional information about this topic:
http://npic.orst.edu/faq/garden-drift.html
https://extension.oregonstate.edu/catalog/pub/em-9307-herbicide-contaminated-compost-soil-mix-what-you-should-know-what-you-can-do
Best of Luck and thank you for using Ask Extension!
Thank you very much. I will call them and ask if it is safe to eat the produce off of those plants in the same year that they were infected by Grazon. All the best, Evie
