Tomato Plant Leaves Have All Gone Yellow

Question

All of my tomato plant leaves have turned yellow. This has happened in previous years but not as bad as this year. The plants are dying or look dead.

Answer 1

There are many reasons this can happen. These articles will help you pinpoint what is wrong with your plant:
https://www.gardeningknowhow.com/edible/vegetables/tomato/yellow-tomato-leaves.htm
https://www.gardeningknowhow.com/edible/vegetables/tomato/early-blight-alternaria-tomato-leaf-spots-yellow-leaves.htm