Spotty tomato plants?

Question

My tomato plants' leaves are turning yellow with brown spots. This starts at the bottom of the plant, and advances upward. What is it? Can I do anything about it?

Answer 1

Sounds like blight to me.  This is a fungal disease VERY common to tomatoes and hard to prevent.  But the rules are, stake the plants so they are off the ground, water using a drip hose to prevent the leaves from getting wet(once wet the disease spreads like crazy), use a mulch to prevent splashing when it rains, never plant tomatoes in the same location two years in a row, and choose resistant varieties.  There isn't much you can do once it starts....believe me, I have tried sprays etc, with no luck.  Some years are just worse than others.

Answer 2

you have  beetle  leafhoppers

http://gardening-tips-idea.com/Tomato-gr...

Answer 3

The answers preceding mine could bee right. Also the plants could be stressed after a long summer. Sprinkle a table spoon of Epsom salt in a circle around each plant along with a few table spoons of lime. Now mix some composted cow manure with the surrounding soil and mound up around the plants. Water in might be just what they need for a pick-me-up and give you a nice fall crop.

Answer 4

That's a virus.  There's not really anything you can do.  Basically, the best thing you can do is not plant your tomato plant in the same spot next year.  That virus stays in the ground and if you plant in the same spot you'll likely get it again next year.

Also, it's a good idea not to let anyone smoke around your tomatoes.  Tomatoes can get the tobacco mosaic virus from the smoke if the tobacco has it.

Answer 5

Actually spotted, yellowing leaves are a sign of fungal or bacterial disease, not virus. To prevent this next year, try spacing your plants further apart to encourage airflow and use a mulch to prevent weeds. And select "blight-resistant" varieties (indicated by the letter "A" on the tag after the varietal name).

For now, avoid overhead watering so that sprinkled water can no longer spread the disease from infected leaves to healthy ones. A fungicide containing copper will also help if it's a severe problem...make sure to follow the directions on the bottle and wait the reccomended period of time before picking any tomatoes you have sprayed.