The soil might be poisoned.

For all the time & water I could have purchased heirloom or farmer's market tomatoes.

Instead of attempting to plant in the local soil, you may need to go with store bought garden soil augmented with composted manure or home brewed compost. Best way to do this is building a series of raised beds, then put your garden soil/manure. I do know the intense rainstorms that come to Oklahoma and other plains states in the spring are not kind to tomatoes. In Virginia we hope for moderate rains in the spring, too much rain and the tomato plants tend to not do as well.

You may want to talk to the folks at the state cooperative extension for ideas as to what works best.

http://www.oces.okstate.edu/

Last year in the same bed, I got over 40 eggplants off of 2 plants.

I moved everything around year to year so anything that was expecting a succulent cabbage seedling was going to be really put off by a squash plant.

The only other thing I can suggest if you want your heart broken next year is that you try growing them in bags of potting soil.

so you have to water carefully. However, the soil within is sterile and the bag itself supplies the mulch.

What's your soil like, or are you using store-bought? We have almost straight clay here in KY, and I've had to mix literally tons of compost into it (rotted horse manure, hay, dead leaves, kitchen scraps).

We've been getting torrential rain and flooding here the past week. Wiped out half row of tomato seedlings, and lots of flower seeds I'd just planted. I've been digging trenches like crazy.

I've been reading lately that epsom salt and homemade Miracle Grow aren't that great. I'm guessing you've already tried regular fertilizer? Also, are you planting types that are supposed to do well in OK hot sun?

Last year we got huge rains, I have always thought the runoff from neighbors yards with chemicals may have made a difference. I am taking my soil to the Cooperative Extension on Tuesday.

I have a black thumb but the plants I buy from http://tomatomansdaughter.squarespace.com/ (located outside of Tulsa) never fail me.

I'm in Michigan. Couple years ago after having bounty after bounty of tomatoes garden crashed and burned. Could not understand. Then....I looked around and really started to notice things.
My new neighbor ripped out all the flowering plants in his yard. Said he was allergic to most plus just didn't have the time to care for them.

Well...my old neighbor was a prolific gardener. Pollinating flowers and herbs by the almost literal ton. The bees moved on. I didn't plant too many flowers but that year they crapped out also.

I changed gears and dedicated a larger portion of my yard to flowering herbs and butterfly flowers you know the ones they say draw butterflies to the garden.

Bingo bango that righted everything the next year.

If there are no pollinators there will be no fruit. That's nature!

for seed savers!

for cukes squash, melons bees are essential. For peppers, eggplants, tomatoes, beans, etc - with perfect flowers - not necessary

and I could have bought over 100 pounds of tomatoes for what those 3 or 4 homegrown ones cost me. Bugs, weather, something just did them in this year. Going to buy mine from the farmer's market up the street.

It's June and I still have to use the heat! I swear it's like I live in Seattle with the constant clouds and rain. And the tomatoes are losing leaves to disease and it's still early season.

what is your sun exposure (hours of direct sun)?

Lots of wilted leaves on the plants. They are HUGE plants just not many blooms or fruit. It gets almost a full day of sun.

Are you pinching off the runners?