What's wrong with my tomato plants?

i live in south florida and most are doing great, but some are turning yellow around the edges of the leaves, then the leaves get brown and die. I think it must be some sort of disease, but i don't know- can't see any bugs. I don't want to lose all of the plants!

What's wrong with my tomato plants?
Umm could be to much water but it could also be lack of nitrogen in the soil. They say never plant tomato in the same spot twice. Get a fert. with a high first number to put nitrogen back in soil. Use a 15-10-10.
Reply:Sevin dust..don't know what's wrong, but a great cure all............if that doesn't fix it you can't........enjoy
Reply:Yup, too much water. Make sure you have good drainage from your pot. Or if they are in the ground, make small ditches around them to drain away the excess rain. They do need water, though, so don't let them dry out. Yellowing of the leaves is the indicator. Good Luck!
Reply:What you describe sounds like they are being overwatered.
Reply:sounds to me like they are getting to much water
Reply:tomuch fertilizer,not enough nytrogen,and use nature compost

tomuch water,mix 50/50 joy soap and water spray plants kill any mites that are usually unseen by the human eyes,from leaving your spots and virus on you leaves,

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