I don't rotate my tomato location, but essentially grow them year after year in approximately the same location. As for fertilizer, I tend to try to make healthy soil with fair amounts of compost and organic matter, and I fertilize lightly, and then only at the early part of the year. Wish I could tell you more about your own fertilizer situation.

It is possible that you have over done it. Did you follow the instruction as HOW MUCH?HOW to apply ?

Blossom drop can be the result of too much nitrogen.

Betsy

Here is a link that might be useful: Blossom Drop FAQ

I have volunteer tomato growing between onion rows . I let it grow to see what will happen, it's now with fruits and lots of flower. Before the onion start bulbing the onion where fertilize by 21-0-0 every 2 to 3 weeks . I also put eggplant next to it to see what will happen .Now the eggplant has flowers.

Thanks for the responses. I followed the instructions on how much nitrogen to put on the cukes and corn, but am afraid the amount may have been too much for the tomatoes. I read the FAQ on blossom drop and it says that calcium can sometimes reverse the effects of the nitrogen in the tomatoes. Has anyone used egg shells successfully?