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tomato plants leaves

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Puddintane | 23:39 Sat 05th Aug 2006 | Home & Garden
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I am told that the yellowing and browning that starts at the bottom and works its way up and eventually takes its toll on the plant is a fungal disease. I have tried many cures, but found no solutions. Can someone help.
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Fungal infestations in tomatoes, as well as other plants, begins in the soil, infects the lowest leaves and transmits fungus spores upward through a gas that's released from the fungal growth. This is the reason it progresses upwards. The best cure is preventative... however, you sound like you're well beyond that stage. It may be to late to save your plants since, even if you affect a cure, the plants are under stress and not likely to produce much. Having said that, see if you can find Daconil 2787, or Ortho Multi-Purpose Fungicide... these have done well for me in controlling similar fungal growth in roses (they all tend to be about the same). Read this for preventative actions for next year: http://www.hort.uconn.edu/Ipm/veg/htms/tomdis. htm
Best of luck!

I don't know whether you're growing your tomatoes in a greenhouse or outdoors and whether you plant them in the same soil every year.
I don't have a greenhouse and for many years have grown my tomatoes outdoors direct in the soil, alternating their location every other year with climbing beans, to help avoid any build up of disease in the soil. I also dig a trench for them every year and fill it with compost and old manure and the combination of these activities has meant that apart from one very wet summer when all my tomatoes died of blight (as did all the others in the neighbourbood) I have rarely suffered from any fungus disease. I don't know whether adopting these techniques would help you but I suspect tired or diseased soil contributes to a lot of fungus problems with tomatoes.

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