Posted by: ssorrrell | July 18, 2007

Tomato Wilt

The Cherokee Purple tomato plants are suffering from wilt. It may be the same thing that killed the chamomile. This is disheartening, but it is also creating air shafts in once dense foliage. The modern hybrids don’t have the wilt, but the leaves are yellowing badly.

Oh, I’m getting better.  The first three links say.  Tough luck, your plants are sick, pull them up, and rotate your crops.  But the natural approach says; there is an imbalance in the system.  If there is excess of one element find the entity which absorbs the excess.  Whether it’s bugs, minerals, weeds, prey animals, or disease.

Missouri State U. Ext.
Look for six common causes of tomato wilt in the South
Tomato Problems – Tomato Diseases: Foliage

Ohio State U. Ext.
Fusarium and Verticillium Wilts of Tomato, Potato, Pepper, and Eggplant

So, I began looking for solutions and got the next two links.

Clemson Ext.
Tomato Diseases

Organic Tomato Production

And then I found this on a Brazilian site.

Summa Phytopathologica
Control of tomato bacterial wilt through the incorporation of aerial part of pigeon pea and crotalaria to soil
The use of organic matter that improves the physical, chemical and biological soil properties has been studied as an inducer of suppressiveness to soilborne plant pathogens. The objective of this work was to evaluate the effect of different sources and concentrations of organic matter on tomato bacterial wilt control. Two commercially available organic composts and freshly cut aerial parts of pigeon pea (Cajanus cajan) and crotalaria (Crotalaria juncea) were incorporated, in concentrations of 10, 20 and 30 % (v/v), into soil infested with Ralstonia solanacearum. … All evaluated concentrations with incorporation and incubation for 30 days of aerial parts of pigeon pea and crotalaria controlled 100% tomato bacterial wilt. … These results suggest that soil incorporation of fresh aerial parts of pigeon pea and crotalaria is an effective method for bacterial wilt control.

Green manure provided 100 % control of bacterial wilt and the development of the tomato plants was also significantly superior for all concentrations tested (Tables 2 and 4). This is probably a result of the improved chemical and biological characteristics of the plant growth substrate due to soil incorporation of the green manure.

This topic needs much more research.  There is a great deal of material on the Brazilian site in English and searchable through Google Scholar.


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