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The Tropical Fruit Forum
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Citrus
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Cold Hardy Citrus
(Moderator:
Millet
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My trifolate orange has red vein down the middle
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Topic: My trifolate orange has red vein down the middle (Read 861 times)
Unicyclemike
Member
Posts: 98
Red Lion
My trifolate orange has red vein down the middle
«
on:
September 24, 2022, 02:42:42 PM »
On one limb there are leaves that have this red vein down the middle. Here is a photo. What is this?
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kumin
Hero Member
Posts: 713
USA PA 6b
Re: My trifolate orange has red vein down the middle
«
Reply #1 on:
September 24, 2022, 03:09:51 PM »
I see this on a few trees as the approach leaf drop in the Fall, especially if the trees are under stress. I've also seen in late Summer with bark/limb/root damage.
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Millet
Moderator
Hero Member
Posts: 4815
Colorado
Re: My trifolate orange has red vein down the middle
«
Reply #2 on:
September 25, 2022, 01:57:13 PM »
Possible nitrogen deficiency. Symptom start out as yellow/orange veins with some green out on far side.
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kumin
Hero Member
Posts: 713
USA PA 6b
Re: My trifolate orange has red vein down the middle
«
Reply #3 on:
September 26, 2022, 09:54:10 AM »
Red veins showing on a girdled seedling.
Girdled section on red -veined seedling. Note that the growth below the girdle doesn't have red leaves. In addition, the bark below the girdle is a deeper green. The off-green bark may be an related to the red leaves.
Additional seedling showing red in leaf.
«
Last Edit: September 26, 2022, 10:17:03 AM by kumin
»
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Millet
Moderator
Hero Member
Posts: 4815
Colorado
Re: My trifolate orange has red vein down the middle
«
Reply #4 on:
September 26, 2022, 10:26:19 AM »
looking at the first picture in the above post, I believe it is just fall coloration.
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kumin
Hero Member
Posts: 713
USA PA 6b
Re: My trifolate orange has red vein down the middle
«
Reply #5 on:
September 26, 2022, 12:05:30 PM »
Millet, the 1st and 2nd photos are the same tree. This coloration didn't show up until recently, so Fall weather likely enhanced the effect.
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vnomonee
Sr. Member
Posts: 498
Zone 7a northeastern NJ
Re: My trifolate orange has red vein down the middle
«
Reply #6 on:
September 28, 2022, 07:06:07 PM »
Graft of fast flowering trifoliate on tai-tri also showing red on single leaf, graft acting independantly of root stock?
Can anyone chime in on I am wondering if the grafted scion of a deciduous citrus will go dormant even if the root stock doesn't? The inverse, in a colder climate how does this work say on a loquat (evergreen) grafted to a quince (deciduos)? I also have a Prague Chimera graft on this tai-tri.
«
Last Edit: September 28, 2022, 07:08:00 PM by vnomonee
»
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My trifolate orange has red vein down the middle
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