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Is this bacterial wilt?

Posted by JoeOrganicTomatoes 6A (My Page) on
Mon, Jul 14, 14 at 10:13

Help...some background info: Paul Robeson variety heirloom..In ground... planted May 12th. 1 main stem with 2 sub stems (V shaped). I removed one of the stems completely today and am posting a pic. The leaves on this stem were still green but limp and wilted. The other stem seems unaffected so far. Is this the above mentioned wilt? Can I leave the other un affected stem in ground? I'm hoping to get some fruit from it as I've never grown this variety. The plant is approx. 2 1/2 feet from another variety which to date has no signs of any disease. What should I do? Thanks to all in advance for taking your time to answer.


Follow-Up Postings:

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RE: Is this bacterial wilt?

  • Posted by digdirt 6b-7a North AR (My Page) on
    Mon, Jul 14, 14 at 20:02

Possibly but not definitive from the photo. Yes, I'd leave the healthy side for now. If it too fails then you'll know for sure but the degree of discoloration in the photo could have other causes as simple as stem damage.

Dave


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RE: Is this bacterial wilt?

Thanks Dave. This is day 2 after I removed the infected stem and so far the remaining one is doing ok. In closing I want to thank you soo much for all the help you have given me not only with this but also in the past. This past year I germinated from seed for the 1st time and next year I'm going to attempt grafting using a hybrid for the root stock and an heirloom as my scion. Any thoughts you have on this would be greatly appreciated. It would be nice to be able to reduce the odds of a disease ruining all of my plants. The majority of my plants are in containers. I only have 4 in ground. thanks again.


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RE: Is this bacterial wilt?

That is fusarian wilt. look at the brown line along the interior wall of the stem. That is a definite indicator. Any affected plants and all vegetation must be removed and burned , plus all tools used mist be sterilized. There is no known cure. Sorry


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RE: Is this bacterial wilt?

Thanks carogator. I googled fusarian wilt and the pic I saw matched mine. What is interesting was that the brown line on my plant was only one side of the stem. Is this normally the way it is. Also the remaining stem with fruit on it seems to be unaffected. The variety is a Paul Robeson and has about 11 more days till the fruit ripens. Can I leave it up if it continues to remain healthy so that I can get some fruit? Your thoughts..Thanks


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RE: Is this bacterial wilt?

Normally, the brown goes all the way around the stem. A cross cut will show a circle. Enclosed is a formula that seems to be helping in our area of S.C.
Another option is to mix 2 1/2 tablespoons of horticultural or vegetable oil with 4 teaspoons of baking soda in a gallon of water. Mix your ingredients thoroughly, and pour the solution into your garden sprayer.


To apply a baking soda spray, first remove as much affected foliage from the plant as you can. Spray your tomato plants with water to loosen the powdery mildew spores. Then spray the plants with your mixture. It's best to spray the baking soda solution in the morning and all over the tomato foliage, covering all the leaves thoroughly, especially the undersides. Continue to spray the baking soda mixture every five to seven days until the fungal disease is under control. You can also spray your tomato plants proactively to prevent fungal attacks.


Use With Caution
If they are overused, baking soda sprays can injure tomato plants, causing the leaves to dry out significantly, so use these treatments carefully. Baking soda sprays can also have harmful effects on the soil, because the baking soda can build up when sprayed in drought-stressed areas where only drip irrigation is used.

Go ahead and leave it up for now, just follow all the precautions you found with google. It is contagious and you can spread it by your touch.


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RE: Is this bacterial wilt?

Thanks carogater for the info. You mentioned in your followup about a formula that seems to be working in SC but I think you forgot to include it. Also regarding the baking soda spray is the concept for its use that baking soda will be absorbed thru the leaves and help with the flow of water and nutrients through the infected stem? Thanks again..I'll await your response b4 beginning the baking soda treatment.


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RE: Is this bacterial wilt?

Please reread previous post. Just after S.C.

CORNELL FORMULA

Another option is to mix 2 1/2 tablespoons of horticultural or vegetable oil with 4 teaspoons of baking soda in a gallon of water. Mix your ingredients thoroughly, and pour the solution into your garden sprayer.

Use this formula on all your tomatoe plants. Spray them dripping wet on top and bottom of leaves and around the base of plant.

Good Luck, I saved half of my plants.


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RE: Is this bacterial wilt?

Thanks again carogator... where I'm confused is if this is fusarium wilt and this wilt is soil based how does spraying the leaves help the plant . Unless you are counting on the solution being absorbed through the leaves. I just need some clarification. Thanks again


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RE: Is this bacterial wilt?

As a follow-up to this issue on Fusarium wilt I came across an interesting article regarding the Cornell Formula. Here is the link:
http://ncalternativecropsandorganics.blogspot.com/2010/07/cornell-formula-fungicide-example-of.html


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RE: Is this bacterial wilt?

  • Posted by digdirt 6b-7a North AR (My Page) on
    Thu, Jul 17, 14 at 20:30

Joe - it's been 3 days now. Is the other half of the plant still looking fine? If so then the odds are that it isn't FW.

The reason I tentatively ruled it out is because FW normally affects the vascular core tissue not the epidermal tissue. The vascular tissue in your plant appears healthy in the photo and the discoloration is only on one side and the side that shows an injury.

While it can't be completely ruled out it can't be 100% confirmed either. So my question - how is the rest of the plant doing?

how does spraying the leaves help the plant

Good question.

Dave


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RE: Is this bacterial wilt?

I guess it is to help keep other pests from further damiging the plant and the runoff drips into the root zone and gets carried up into the plant with what little water it can still get. I really don't care how it works as long as it does.


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RE: Is this bacterial wilt?

Joeorganictomatoes, thanks for the link to the NC alternatives. It makes for some interesting reading. What I learned was to not spray after about 80 degrees, as the hot temps with the soda can be harmful. I used the spray at daybreak and it was dry before it got ho-t.


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RE: Is this bacterial wilt?

Thanks Dave for your reply. It is now day 5 and the plant is still looking ok..It has blossoms on it along with fruit of varying sizes...I'll keep an eye on the real small ones to see if they are growing. I gave it a dose of Azomite to add additional trace elements in case it is FW. I also will give it a watering of Bio Zeus Earth Juice Plant Supplement. This is an organic product and contains trichoderma viride ,a microbe that is good in combating FW. I'll post a follow-up shortly.


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