Yellow vein chlorosis

no_regrets(SoCal Sunset 23)April 7, 2007

Got a dwarf improved Meyer in early Feb. and planted into the ground where it gets direct sunlight about 6 hours a day, bright light the rest of the day. Blooming profusely, tons of little baby lemons, treated an ant/aphid infestation and now relatively insect-free.

When I got the tree, the newest leaves were thin and light green, almost white, but rather than go overboard with trying to fix anything I decided to pretty much leave it be for awhile. Those leaves haven't changed at all but now I've got yellow vein chlorosis on the lower leaves. The leaf stays green but the veins turn yellow and hte leaf eventually drops. What causes this, and should I do something about it?

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orchidguyftl(z11 FTL FL)

if its true chlorosis, it would be a lack of iron
I get around this with my plants by tapping a few high iron content nails into the ground or pot that they are growing in, rusty ones work best and will green up the plants in a couple weeks

    Bookmark   April 7, 2007 at 11:19PM
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bencelest(z9 CA)

Severe Nitrogen deficiency- totally yellow leaves with no variation of color or yellow orange veins with some green out on the far side.
With less severe nitrogen deficiency the symtoms will show up on the older leaves with the new leaves will still having some green .

Iron deficiency - new leaves with green veins on an otherwise yellow leaf with no green border area around the veins.
So buy a fertilizer with high on N. That's the first number on the fertilizer like 19-8-12 with micronutrients. Your safe bet is the miracle grow fert for rodo/?/? fert former name:miracid

    Bookmark   April 11, 2007 at 1:02AM
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bencelest(z9 CA)

Oh, BTW those info I gave I copied it from Millet's thread given to him by Dr. Manners a long time ago.

    Bookmark   April 11, 2007 at 12:44PM
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no_regrets(SoCal Sunset 23)

Thanks so much. What are the chances of having a plant deficient in both? I ask because when I got the tree, it has what sounds like iron deficiency but the leaves that are now yellowing sound like a nitrogen deficiency. What are the chances, eh? :-)

    Bookmark   April 11, 2007 at 10:58PM
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bencelest(z9 CA)

Of course, it is always possible. It is just like a sick child, you can have a cold and a fever at the same time. But if I were you I would check first the pH of your soil. But then if you want to take a 'chance' just add ironite and fert that are high in nitrogen. Make sure you get the one high in ammoniacal nitrogen so it is readily available to your plant. But do so in half dose. You don't want it to overdose. But do it twice as many times as it said on the label.
Here's an excerp from my notes:
"Soil pH affects the amount of nutrients that are
soluble in soil water and, therefore, the amount of
nutrient available to plants. Some nutrients are more
available under acid conditions while others are
more available under alkaline conditions. However,
most mineral nutrients are readily available to plants
when soil pH is near neutral.

The development of strongly acidic soils (pH less
than 5.5) can result in poor plant growth as a result
of one or more of the following factors: low pH,
aluminium toxicity, manganese toxicity, calcium
deficiency, magnesium deficiency, and low levels
of essential plant nutrients such as phosphorus
and molybdenum. "

    Bookmark   April 12, 2007 at 11:11AM
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The fertilizer benny was refering to is Miracle-Gro Azalea, Camellia, Rhododendron Plant Food.

Product information is below.

Here is a link that might be useful: Miracle-Grow Website

    Bookmark   April 13, 2007 at 8:00AM
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No regrets,

Your treatment with insecticide has contributed to your veinal chlorosis, I also would expect that you are using herbicide to control weeds?

Intraveinal chlorosis is different from veinal chlorosis. Iron deficiency isn't the cause of veinal chlorosis. A lack of iron cuases the chlorophyll to sut down and turn yellow, and the veins of the vascular system remain green. When the leaf is green patches of chlorophyll-filled cells between yellow veins, that means too much herbicide and possibly pesticide related as well.

Sorry It took me four years to answer your question, but for the benefit of someone else reading this...

    Bookmark   May 27, 2011 at 10:45PM
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There are also some viruses that produce symptoms of veinal chlorosis (the process is called "vein clearing") in varying patterns. We recently had a customer bring in leaves from an ornamental cherry tree that showed a literal mosaic of yellow veins and veinlets with perfectly green leaf tissue between all the yellow veins. The only close match I could find in my research is a virus common in India called Bendhi Yellow Vein Mosaic Virus, which attacks Okra plants.

Here is a link that might be useful: Bhendi Yellow Vein Mosaic

    Bookmark   August 24, 2013 at 3:13PM
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