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Post by sheaper on Apr 7, 2020 9:55:11 GMT -5
First post. Container grower in Sumter, SC
This is a blood orange that I purchased a year again moved it to this bigger pot last spring. Just started noticing this leaf situation a few weeks again and have since treated for manganese and iron deficiency with little improvement noted. Trying to get some oak leaves as we speak to give that a try too...can’t hurt right Stanley!!
Thoughts appreciated
Thanks!
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Post by poncirusguy on Apr 7, 2020 10:03:26 GMT -5
A few pictures is needed
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Post by sheaper on Apr 7, 2020 11:16:43 GMT -5
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Post by sheaper on Apr 7, 2020 11:18:16 GMT -5
Couple more Attachments:
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Post by millet on Apr 7, 2020 13:10:46 GMT -5
It looks like a manganese deficiency. The leaf symptom for a manganese deficiency is: Newest leaves with green veins WITH green borders to the sides of the veins on otherwise yellow leaves. Leaves normal size. Most of the times the symptoms are transient due to a marginal supply of available manganese in the soil. The tree is temporarily unable to extract enough manganese to supply the leaf's needs because of the large and rapidly growing new flush of growth. Much of the time the deficiency disappears after the new leaf growth is complete. Many people do nothing as the deficiency is often temporary. To quickly correct the situation you can apply manganese sulfate or manganese nitrate as a foliar spray. Check the ingredients in the fertilizer you are using to see if it contains manganese.
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Post by sheaper on Apr 7, 2020 16:25:36 GMT -5
Ahhh for some reason I was confusing manganese with magnesium(which I thought I addressed with Epsom salts earlier this spring)
That does make a lot of sense though thanks for the insight! I use a combination of Espoma/Happy Frog/Osmocote Plus(which I added recently) and only the osmocote shows any trace element of manganese so you’re probably correct.
I may try the foliar spray just as an experiment and post the results.
Thanks again!
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Post by millet on Apr 7, 2020 18:40:46 GMT -5
Sheaper, citrus are heavy feeders, requiring more nutrition than most plants. My strong suggestion for you would be not to use an organic fertilizer such as Espoma, or any organic fertilizer when growing in containers. Organic fertilization is OK for plants growing outside in the soil. The reason is that organic fertilizers require microorganisms to break down the fertilizer to a condition that the tree can use. Soil have many millions of microorganism, but container growing DOES NOT. Therefore, Espoma when used in container culture is never available to your tree. Purchase a conventional fertilizer with a formula higher in nitrogen and potassium and lower in phosphorous. Your tree will thank you.
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Post by sheaper on Apr 8, 2020 16:48:35 GMT -5
Okay thanks so would osmocote plus be sufficient for what you suggest? What else would you supplement it with if so?
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Post by sheaper on Apr 8, 2020 18:52:35 GMT -5
I was also planning to feed with Neptune’s Harvest Fish Emulsion and Dynagro Foliage Pro at waterings. Is that enough supplementation for the growing season? I would probably dial it back during the winter
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Post by millet on Apr 9, 2020 10:50:01 GMT -5
Foliage Pro 9-3-6 is a good fertilizer choice for citrus.
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