Tomato Disease Identification

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Tomato Disease Identification - General Prevention/Cure

Tomato disease identification is not especially easy and some of the diseases display similar symptoms. Some tomato diseases can be cured by the application of chemicals but others cannot. In all cases, try to choose disease resistant tomatoes, especially when a specific disease is prevalent in your area.

Always, destroy diseased tomato plants, preferably by burning. Never add them to your compost heap. Always clear up debris from your tomato plants including fallen leaves and to be on the safe side, the same applies to all the plants in your garden.

Tomato Disease Identification - Some Symptoms

Symptoms: Older leaves develop dark spots with concentric rings. The remainder of the leaf turns yellow and leaves will probably die off before their time, leaving the fruits exposed to the full heat of the sun. This tomato disease is known as Early Blight and recurrence can be prevented by copper and/or sulfur sprays

Symptoms: Older leaves develop small dark spots on top and underside of leaves. The spots get larger and turn a grey-brown colour, after which the middle of the spots split and fall out. The rest of the leaf turns yellow and leaves will dry out and drop off. Production of fruit will be reduced. This is Grey Leaf Spot and its effects cannot be reversed.

Symptoms: Strangely shaped grey spots will appear on the leaves which will turn papery in texture and later a circle of white mould may surround the spots. Black areas appear on stems and the fruit may develop similar spots to the leaves. This is Late Blight which can also affect potatoes and is extremely infectious.

Symptoms: Papery patches on the older leaves first which can be confused with Late Blight, however, look out for tiny dots within the patches. If you see them, then this is Septoria Leaf Spot. Copper sprays can be effective in stopping the disease from spreading.

Tomato Disease Identification - More Symptoms

Symptoms: White mould grows on the stem right down near the earth, followed by dark spots appearing on the stem, which eventually encircle the stem thus preventing the tomato plant from taking in food and water. This is known as Southern Blight and can be prevented by the addition of calcium to the soil or using a fertiliser containing ammonia.

Symptoms: Leaves turn yellow and dry up. The plant appears to wilt in the heat of the day but recovers at night. However, the stems eventually discolour and the plant will be unable to take in moisture or food. This disease is Verticillium Wilt.

Symptoms: Yellowing of the leaves from the bottom of the plant indicates the presence of Fusarium Wilt.

The Best Books on Growing Tomatoes

If you've been plagued by tomato diseases, then these books are the best around to help you grow and maintain healthy plants.
  1. The Ultimate Guide To Growing Tomatoes
  2. Now That's What I Call A Tomato! Guide To Growing Amazing Tomatoes
  3. Tomato Growing Secrets
  4. How to Grow Juicy Tasty Tomatoes

Tomato Disease Identification - Yet More Symptoms

Symptoms: Blotchy leaves with smaller fruit and crop. Young tomatoes may go brown. This indicates Tobacco Mosaic Virus.

Symptoms: Yellow and brown rings and brown streaks on the plant stem, dead spots ant tips on leaves with very stunted growth. The tomato fruit may have red and orange discolourations when mature. These symptoms vary from variety to variety but some or all indicate Tomato Spotted Wilt Virus.

Symptoms: V shaped gashes on leaves, usually appearing during fruiting signify Verticillium Wilt.

Organic Tomato Magic

Here's what you'll discover in Organic Tomato Magic

1. The entire tomato grooming secret explained in rich detail: How to groom the leaf branches in such a way, as the plant grows, to always leave the 3 necessary leaves in the correct area so they act as solar panels and lungs for the plants.

2. When you groom your tomato plants, new stems will try to grow out of the tomato plants to form an entirely new plant. Learn how to handle these properly without damaging the plant.

3. The grooming secret will send your plants into great heights, but can also increase the risk of disease if you do not take care of the leaf branches properly, find out why.

4 How to save time and money pollinating your tomato flowers when they are ready. This method is so simple, it will cost you $0, and takes less than 5 minutes to pollinate an entire green-house of tomatoes. You don't have to spend money on expensive pollinating fluids or other contraptions.

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  • Reply
    Maryland Jul 6, 2011 @ 6:40 pm | delete
    My Early Girl tomatoes have perfectly circular little spots on them-all over; they're pale yellow, almost white. Eventually the spots "run" together and form a yellowish skin. I can't see a pest or a hole in the spot to suggest a pest eating them. Didn't notice any problems with the plants themselves. Is it just sun spots? They're planted on a south wall and have been covered with a green shade cloth. They get watered about every other day, but watered daily as it has gotten so hot. Planted transplants in late March. Been gardening for several years here, but never had this problem before.
  • Reply
    Liz_Canham Sep 4, 2009 @ 3:16 am | in reply to James Willey | delete
    Check out http://www.squidoo.com/disease-in-tomato-plants for some tips on virus control or this one http://www.squidoo.com/Disease-Resistant-Tomatoes for information on buying disease resistant tomatoes.
  • Reply
    James Willey Aug 25, 2009 @ 1:30 pm | delete
    I believe my tomato's have tobacco mosaic virus. What must be done to the garden lot for next year. I live in upstate New York.

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Liz_Canham

Gardening is one of my hobbies and I love tomatoes, so it seemed sensible to grow my own. Because I fell victim to some of them, I found out a lot about... more »

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