Question
My tomatoe plants are getting leaves that turn yellow then brown and dry up, how can I solve this?

Answer
Dear Mike,
Usually yellow leaves are a sign of too much water, but if the plant is drying up that can't be the problem.  Sounds like there is either too much fertilizer or a pH imbalance.  I suggest some new soil around as much as you can without disturbing the roots too badly.
Kind Regards,
Kindred
www.eingedi.us