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Girdled tomato stems
Tomato stems girdled near the ground, perhaps 1" in extent. Plant wilts. Roma and Scotia both affected. No detectable efflorescence of fungus aound the damaged area, no visible tiny tooth marks. Plants are otherwise healthy and flourishing when this happens. Plants affected are not all neighbors. If I heap garden soil up around the stem to 3 or 4 inches above the damage and give them plenty of water, they survive and most of them recover to bear fruit despite a week or more of stagnation in growth. Any idea what's causing this and what may be done to prevent it? -- Mike Spencer Nova Scotia, Canada |
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Girdled tomato stems
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#3
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Girdled tomato stems
In article ,
phorbin wrote: In article , ere Any idea what's causing this and what may be done to prevent it? Look up cutworms. ....and put paper collars around the stems to prevent. -- Cats, coffee, chocolate...vices to live by Please don't feed the trolls. Killfile and ignore them so they will go away. |
#4
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Girdled tomato stems
phorbin writes: In article , ere says... Tomato stems girdled near the ground, perhaps 1" in extent. Plant wilts. Roma and Scotia both affected. No detectable efflorescence of fungus aound the damaged area, no visible tiny tooth marks. Plants are otherwise healthy and flourishing when this happens. Plants affected are not all neighbors. If I heap garden soil up around the stem to 3 or 4 inches above the damage and give them plenty of water, they survive and most of them recover to bear fruit despite a week or more of stagnation in growth. Any idea what's causing this and what may be done to prevent it? Look up cutworms. Just did that. We've had problems long ago with cutworms chewing tender seedings right off at the ground. Web info suggests that's characteristic. These are "teen-age" plants, in bloom or just setting fruit, with quite sturdy stems. The damaged plants aren't cut off, just girdled. Well, we do have an enormous variety and number of moths here so I guess that's a candidate answer but the damage isn't, AFAICT, typical of cutworm attack. Tnx, -- Mike Spencer Nova Scotia, Canada |
#5
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Girdled tomato stems
Mike Spencer said:
Just did that. We've had problems long ago with cutworms chewing tender seedings right off at the ground. Web info suggests that's characteristic. These are "teen-age" plants, in bloom or just setting fruit, with quite sturdy stems. The damaged plants aren't cut off, just girdled. Well, we do have an enormous variety and number of moths here so I guess that's a candidate answer but the damage isn't, AFAICT, typical of cutworm attack. I lost a fairly mature eggplant transplant this year to a cutworm, which managed to girdle the stem and weaken it to the point that it fell over in the breeze. Absolutely was a cutworm, as I found it, squished it, and flipped it at the nearest robin. Plant ended up a total loss but since it was an extra I'd tucked in at the end of the bed and was too close to the patch of Anthemis* I wasn't that upset about it. *I have various herbs and flowers in my vegetable garden mainly to attract and feed bees and hoverflies. Anthemis tinctoria 'Kelwayi' is one of them. A quick search found this about flowers for pollinators: http://www.foxleas.com/flower_shapes.htm -- Pat in Plymouth MI "Yes, swooping is bad." email valid but not regularly monitored |
#6
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Girdled tomato stems
Derald writes: The damage you describe occurs more frequently than one might think. Cutworms also girdle branches/limbs and eat "channels" into fruit, especially that touching or very near to the ground. Cutworm damage to fruit often is mistaken for armyworm damage. Based on the info you offer, "cutworm" is my best guess, too. Well, that's new to me. But I'll go looking for cutworms, try the collars. We had one plant so attacked last year, 6 this year. Hornworms can leave the same kind of damage but it would likely be more extensive than you describe and they're pretty easy to spot. Yes. Cutworms spend their days curled up snoozing just under the surface, in the upper 3/4-inch... I'll look there. Tnx, -- Mike Spencer Nova Scotia, Canada |
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Girdled tomato stems
Pat Kiewicz wrote:
Mike Spencer said: Just did that. We've had problems long ago with cutworms chewing tender seedings right off at the ground. Web info suggests that's characteristic. These are "teen-age" plants, in bloom or just setting fruit, with quite sturdy stems. The damaged plants aren't cut off, just girdled. Well, we do have an enormous variety and number of moths here so I guess that's a candidate answer but the damage isn't, AFAICT, typical of cutworm attack. I lost a fairly mature eggplant transplant this year to a cutworm, which managed to girdle the stem and weaken it to the point that it fell over in the breeze. Absolutely was a cutworm, as I found it, squished it, and flipped it at the nearest robin. Plant ended up a total loss but since it was an extra I'd tucked in at the end of the bed and was too close to the patch of Anthemis* I wasn't that upset about it. *I have various herbs and flowers in my vegetable garden mainly to attract and feed bees and hoverflies. Anthemis tinctoria 'Kelwayi' is one of them. A quick search found this about flowers for pollinators: http://www.foxleas.com/flower_shapes.htm Excellent article , thanks ! -- Snag |
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