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Septoria Leaf Spot

12 years ago

Last night I noticed that my tomatoes were developing some darkish spots with light centers and some branches were yellowing. After and inventory it appears that about 45 tomato plants are infected with some being worse than others. Carl Wilson at CSU has suggested that it appears to be septoria leaf spot which I have seen before and suspected it may be. I haven't been watering overhead (the Monsoons have done that for me) and I have mulched with grass clippings as best as I can. I fertilized about a week ago and sprayed with Palmolive/water solution about 2 weeks ago. I am thinking about uprooting the tomatoes that are infected the worst. I read somewhere that a copper solution may help. Any other proven suggestions for me?

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