Any ideas what has happened to tomato plants

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KubotaM4900

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Jun 24, 2011
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Middle TN
I have abt 30 plants that are doing this. They yellow on the bottom an it works it's way up and eventually kills the whike plant. I've adjusted fertilizer over last several seasons but it seems to be more of a disease. Any ideas woukd be good. Have a few another location that are perfect.
 
Done a lil digging on that wilt...it coukd be that or a few others. Early blight seems to resemble it also. What I found was quite interesting if it was in fact the wilt. It can say present in the soil for upto 10 years. If anyone has had any issues with their plants of any kind I'd like to hear about it. I can grow most anything with out any issue period. But this has me puzzled seems to have some affect most years.
 
I was thinking it was a blight. Some of them can devastate a tomato plant. Most of this stuff lies dormant in the soil for years. It gets on the bottom leaves when rain beats on the soil and bounces it up on them. Recommendations are for a three year rotation for tomatoes. If you cant do that, then heavy mulching can help.
 
Last soil sample was:
Ph 7.4 (yes a bit high)
P very high
K high
Ca high
Mg high
Soil test recommendation for tomatoes was 200-50-80 for an acre. Plants do very well until the bottom leaves start yellowing. I cut most all Yellow leaves off all the plants today an many of the lower to the ground ones also. I'll see if that helps any. As for the pH 7.4 is too high an has a negative affect on several plants of various kinds. The ends of the rows apparently didn't get as much lime as the middle an plants grow better for most part. I'd guess those to be in the 6.5-7 pH range based on coverage with the lime. This also answers the question on here each season if you can put too much lime an it's apparent the answer is yes. It grew perfectly until the last lime application which was kinda an accident put it up .5 or maybe more.
 
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Does anyone use wheat straw to mulch with if so what do you gain from it? I've seen a few do it but not many around here.
 
Wheat mulching will help. The rain splashes the fungus up from the soil onto the leaves. Assuming its a fungal issue.


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