Diseased tomato plants, north AL? Suggestions please, and thanks!

[ctfrench]

Hello Tomato experts,

Here’s my tomato crop this year. Let me presage these images with a little bit of background information.

This is near Huntsville, Alabama, it’s been an extremely wet May. These plants are approximately 55 days old (since they’ve been in the ground). They were germinated from seed. I have tried everything I can to stay ahead of disease with spraying. There is some leaf spot, and also significant yellowing of the lowered leaves on the plant over the last two days. The plants were watered for the first time in five days yesterday. It rained pretty well today.

My usual weekly regimen includes malathion, daconil, and a little aspirin. I recently switched to liquid sevin, and spectrocide immunox, and also Daconil when I found some spots on leaves. See the images. I also have the copper fungicide from Bonide that I could use as soon as it’s dry enough to spray again.

The plants were not watered for about five days after all the rain we’ve had, and the top layer of the soil got pretty dry. So I could inconsistent watering be an issue here in addition to other pathogen issues that I am facing?

Plants are fertilized once a week with liquid miraclegro on the roots/soil. It is interesting that the affected plants are better boy and big beef hybrid, and not so much my heirloom plants that are growing adjacent. The heirlooms might be slightly affected, but not to the degree that you’re seeing here. These images are all better boy or big beef from Totally Tomatoes (seed). These “should” be resistant to most common tomato diseases, but certainly that is not absolute. Thank you all so much for any suggestions on how to treat this, if possible.

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[Shule]

It might be Septoria leaf spot. I don't think those hybrids say they're resistant to it.

[PlainJane]

Looks similar to the septoria I battle every year. I just try to keep the plants healthy otherwise as I don’t spray.

[Labradors]

I get Septoria every year as well. Just remove the diseased lower leaves, then keep doing that until the end of the season. I still get a good harvest all season long.

[ctfrench]

Thank you folks very much. I too thought Septoria, so it’s nice to have some additional support.