Views: 217, Replies: 9 » Jump to the end
Zone 5, Northern Illinois
Kvent42
Jul 24, 2016 8:55 PM CST
What's wrong with our tomato plants? No one commented in the pest and disease section and we really need help. They are turning brown from the bottom up.
Thumb of 2016-07-25/Kvent42/c2b6a7

Name: Elaine
South Sarasota, Florida (Zone 9b)
The one constant in life is change
Cat Lover Master Gardener: Florida Tropicals Multi-Region Gardener Vegetable Grower Region: Florida
Herbs Orchids Birds Garden Ideas: Level 2 Garden Sages Celebrating Gardening: 2015
Image
dyzzypyxxy
Jul 24, 2016 9:03 PM CST
Oh dear! It looks like you might have some sort of blight going on. If so, with the plants so close together, it will spread very easily and quickly.

I've had marginal success stopping bacterial blight with a douse over the whole root system with a dilute hydrogen peroxide solution. Take the stuff you buy at the drug store, and dilute it 32:1 with water. (4oz. per gallon) You'll have to remove that landscape cloth to douse the whole root system of all the plants that are affected. You should use about a gallon of peroxide per plant. It may not help at this point, but it certainly won't hurt.

For future reference, I wouldn't put landscape cloth down under tomato plants except maybe temporarily while they're getting going in the spring time to warm the soil faster. Now, in hot weather it will be making the soil much hotter than it already is, and the roots not able to breathe either. Removing it from the entire bed, and putting down maybe some organic mulch like wood chips might help the whole situation, too.
Elaine

"Success is stumbling from failure to failure with no loss of enthusiasm." –Winston Churchill
Name: Paul Fish
Brownville, Nebraska (Zone 5b)
Image
PaulF
Jul 25, 2016 10:00 AM CST
It does look like early blight, which most of the time comes later in the season. I concur about the plant spacing. You need to have at least three feet between plants each direction. Air flow around the base is essential. It helps reduce conditions conducive to disease.

Mulching is a great idea and something is better than nothing. I have tried plastic mulch but went away from it a long time ago. Water will not pass through to the plant base. My mulch of choice is layers of newspaper and 6-8 inches of weed free straw. Keeps weeds down, watering at the base is possible, keeps the plant root zone cooler...all the things mulch is supposed to do.

Treating blights at your stage is difficult. Besides the peroxide, there are fungicides on the market that will reduce the spread and prevent more disease but not many cures out there. Prevention is key. Proper air flow is major. Also proper spacing so each plant receives good nutrient uptake. Crowded plants are stressed and are unable to fight off diseases. Do not overhead water and don't water in the evening or night so that the leaves are wet overnight. Fungus playground. Good sanitation, particularly in the off growing season is essential to keep the funguses and other diseases at bay. And a proper mulching program keeping the leaves and the soil apart helps since most blights and other foliage diseases are soil borne.

It is amazing, but by thinning the numbers of tomato plants you will not generally lose production. Healthy, non-stressed plants will produce more. What are the varieties you are growing? Some do better than others at fighting off disease.

Some ideas that may work for this year but something to think about.
Name: Daniel Erdy
Catawba SC (Zone 7b)
Permaculture Sempervivums Hybridizer Xeriscape Plant and/or Seed Trader Organic Gardener
Bee Lover Daylilies Region: South Carolina Garden Ideas: Level 2 Herbs Region: United States of America
Image
ediblelandscapingsc
Jul 25, 2016 10:17 AM CST
Just to add to what they said remove all infected lower leaves and burn them ASAP
🌿A weed is a plant whose virtues have not yet been discovered🌿
Name: Connie White
Athens tn.
Im no quitter.. I will garden in TN
Image
TnWildflower
Aug 30, 2016 9:51 PM CST
This eould benifit by more air circulation. Try some epsom salt water as well.
Respect mother Earth and connect with her .. She will return the favor.
Name: Sandy B.
Ford River, Michigan UP (Zone 4b)
(Zone 4b-maybe 5a)
Charter ATP Member Celebrating Gardening: 2015 I was one of the first 300 contributors to the plant database! I helped beta test the first seed swap Region: United States of America Region: Michigan
Seed Starter Vegetable Grower Birds Butterflies Dog Lover Cat Lover
Image
Weedwhacker
Aug 30, 2016 10:32 PM CST
I feel your pain, @Kvent42 ! My tomatoes are always similarly affected -- the best defense I've found is to give them enough fertilizer that they kind of grow faster than the disease progression, at least for a while. And this year I grew some of my plants inside a 15x7' hoophouse, which has delayed the disease considerably.

Elaine, when would you suggest to apply the H2O2 drench -- before there is any disease apparent?

LOL -- these were some of my plants in October of 2014 (NOT caused by freezing)
Thumb of 2016-08-31/Weedwhacker/e774d5

"Blessed is he who has learned to laugh at himself, for he shall never cease to be entertained."
- John Powell / Cubits.org - A Universe of Communities
/ Share your recipes: Favorite Recipes A-Z cubit
C/F temp conversion / NGA Member Map
Name: Daniel Erdy
Catawba SC (Zone 7b)
Permaculture Sempervivums Hybridizer Xeriscape Plant and/or Seed Trader Organic Gardener
Bee Lover Daylilies Region: South Carolina Garden Ideas: Level 2 Herbs Region: United States of America
Image
ediblelandscapingsc
Aug 31, 2016 1:18 AM CST
Sandy you may want to do a few crop rotations before planting tomatoes in that spot again, but to get tomatoes until Oct is fantastic for zone 4b. To help in the future remove all infected leaves as they appear and try to keep water off the leaves as much as possible. Also mulch your plants so when it rains dirt isn't splashed up on the foliage.
🌿A weed is a plant whose virtues have not yet been discovered🌿
Name: Rita
North Shore, Long Island, NY
Zone 6B
Charter ATP Member Seed Starter Tomato Heads I was one of the first 300 contributors to the plant database! Vegetable Grower Lover of wildlife (Raccoon badge)
Birds Garden Ideas: Master Level Butterflies Celebrating Gardening: 2015 Roses Hummingbirder
Image
Newyorkrita
Aug 31, 2016 9:53 AM CST
Weedwhacker said:I feel your pain, @Kvent42 ! My tomatoes are always similarly affected -- the best defense I've found is to give them enough fertilizer that they kind of grow faster than the disease progression, at least for a while. And this year I grew some of my plants inside a 15x7' hoophouse, which has delayed the disease considerably.

Elaine, when would you suggest to apply the H2O2 drench -- before there is any disease apparent?

LOL -- these were some of my plants in October of 2014 (NOT caused by freezing)
Thumb of 2016-08-31/Weedwhacker/e774d5



Wow, sure is nothing left of those plants!! Crying
Name: Sandy B.
Ford River, Michigan UP (Zone 4b)
(Zone 4b-maybe 5a)
Charter ATP Member Celebrating Gardening: 2015 I was one of the first 300 contributors to the plant database! I helped beta test the first seed swap Region: United States of America Region: Michigan
Seed Starter Vegetable Grower Birds Butterflies Dog Lover Cat Lover
Image
Weedwhacker
Aug 31, 2016 1:49 PM CST
Newyorkrita said:

Wow, sure is nothing left of those plants!! Crying


I didn't want to be too hasty about pulling them out, Rita... you know, in case they started flowering again or something Rolling on the floor laughing Rolling on the floor laughing

"Blessed is he who has learned to laugh at himself, for he shall never cease to be entertained."
- John Powell / Cubits.org - A Universe of Communities
/ Share your recipes: Favorite Recipes A-Z cubit
C/F temp conversion / NGA Member Map
Name: Rita
North Shore, Long Island, NY
Zone 6B
Charter ATP Member Seed Starter Tomato Heads I was one of the first 300 contributors to the plant database! Vegetable Grower Lover of wildlife (Raccoon badge)
Birds Garden Ideas: Master Level Butterflies Celebrating Gardening: 2015 Roses Hummingbirder
Image
Newyorkrita
Aug 31, 2016 1:57 PM CST
Weedwhacker said:

I didn't want to be too hasty about pulling them out, Rita... you know, in case they started flowering again or something Rolling on the floor laughing Rolling on the floor laughing



Rolling on the floor laughing Rolling on the floor laughing Rolling on the floor laughing Rolling on the floor laughing

« Garden.org Homepage
« Back to the top
« Forums List
« Vegetables and Fruit forum
You must first create a username and login before you can reply to this thread.

Today's site banner is by Paul2032 and is called "French Marigold"