This year I planted a hybrid tomato that I purchased from Twilley Seed Co. I planted ‘Grandeur F1’. The catalog description of this tomato is: “Long yeilding with strong disease package, 8-9 oz fruit, large leaved, vigorous plant, produces 5-7 fruits per cluster. High resistance F1, N, St, TMV, V.”
(F= fusarium vilt race 1, N= root knot nematode, St = stemphylium/gray leaf spot, TMV = tobacco mosiac virus and V= verticulum wilt & races)
Sounds like these plants should have been able to withstand what I think is fusarium wilt.
These are the 2 tomatoes planted on the west side of my greenhouse (toward the end of last year, two tomatoes planted in this spot seemed to show leaf yellowing):
These 2 tomatoes are outside the greenhouse door, on the south side. The Amish Paste tomato that grew there last season had yellowing later in the season. I’m leaving those castor sprouts because the tomatoes probably won’t last long and the castors will replace them in that spot.
These 3 tomatoes are planted in the ‘back’ garden. Last year, the heirloom cherry tomatoes growing there also had yellowing.
Some of these leaves have small brown spots and one branch has shriveled up:
Some more yellowing leaves:
This patch is just yellow – no brown spots:
From my online research, this appears to be fusarium or verticulum wilt. I specifically grew hybrids that were supposed to be resistant to these viruses, however, this year my tomatoes seem to have picked up this problem extremely early. It appears that no place in my garden is safe to plant tomatoes. These wilts also affect cucurbits, legumes, sweet potatoes and a number of plants to a lesser degree. I think that my watermelons may have had it last year.
From my studies, it seems that fusarium wilt can afflict potato, tomato, eggplant, and pepper. I don’t think that I have ever seen these problems in any peppers, or egg plants that I grew last year. I really don’t know for sure what the problem is. I live in a rural county – I should give the county extension agency a call – I’m sure we have one – and see what they might have to say about it. I’ll add that to my to-do list.
According to my research, these diseases normally occur during hot weather when there has been a significant amount of rain and humidity. It is hot now and we have actually had a decent rainy spring.
It looks like most all of my soil is infected with these killer viruses. Tomatoes are probably our main garden vegetable – we eat all we can and can the rest. These canned tomatoes are the basis of many of our meals and soups throughout the year. We simply must get long term production out of them before they die. Time to move!! (not really).
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