Black spots on tomato plants

[Kingoftheplants]

Hi, my tomato plants are looking like they have some sort of disease or deficiency. I wondered if anyone could help me identify it and treat the issue?

Thank you

[greenishfing]

Is it generally just the lower leaves? It looks like it could be magnesium deficiency. The quick treatment is spraying with a solution of Epsom salts, available from any pharmacy. I can't remember the dilution ratio but I'm sure a quick Google will tell you. Last time I bought some, very cheap, the pharmacist said have you taken these before. He laughed when I told him it was for my tomato plants. A small jar lasted for years.

[Kingoftheplants]

Yes, it's mostly on the lower leaves. I'll get some epsom salts and see if that stops it getting worse.

Thank you