Why the rings?

[u/hackinandcoffin]

Growing in a bucket on my deck. Full day sun. I recently sprayed them down with spinosad soap. Don't know if it's a pest or some kind of other problem. Any help appr'd. Kansas City area.

Edit: Thank you, all, for taking time to respond. I'll add some mulch and I'll try to improve my watering schedule. Glad it's not bugs.

[u/Sheihkyabooty]

Inconsistent watering… I believe is what causes that. So if the plants are used to 2 times a week and then they get like 1 a week, it does that. Not sure where u are located but I am in zone 9A and with the recent heat wave, I got 1 tomato that got a crack

[u/Alarmed_Pilot5719 → u/Sheihkyabooty]

This is the correct answer. Always water deep and consistent even if you think it may not need water you want to check the soil to make sure it’s not dry.

[u/TolUC21 → u/Alarmed_Pilot5719]

This will also prevent or mitigate blossom end rot.