I honestly don't think there is a quick fix for getting rid of root knot nematodes in raised beds. I'm trying to improve my soil to the point that I have healthy soil that attracts beneficial microorganisms which will hopefully keep the RKNs under control but I expect that to be a long term process. Meanwhile I'm planting nematode resistant vegetables, including hybrid tomatoes, and cover crops that control RKNs But, like Marsha said, use of earthboxes or similar containers is probably the best way to grow OP/heirloom tomatoes.
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Jerry - You only get old if you're lucky.
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