My tomato plants look like they are dying...?

I live in South Florida and it is hot and sunny all day with 90 degree temps. My tomato plants are full of green tomatoes about golf ballsize or larger. Only two have turned red. However the leaves on my plants are turning brown and dying. Everything I read says they need full sun but it looks like my plants dying? What am I doing wrong?

My tomato plants look like they are dying...?
you need to plant them all the way up to the bottom leaves you can also pull of the dry dead leaves it will be good for the plants as brown leaves will take alot of the nutrients from the plant, they will grow new leaves and make sure they are getting plenty of water. you should water in the a.m. and p.m. as if the leaves get wet during the day the full sun will burn wet leaves. hope this helped.
Reply:It might be fusarium wilt, which is a fungus that affects some tomato plants.
Reply:Feel the soil, is it damp, it needs to be kept damp and using a tomato feed will help. The roots need plenty of room, is there enough soil covering the roots.