Correcting Iron Deficiency for Camellia
westes Zone 9b California SF Bay
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westes Zone 9b California SF Bay
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Iron Deficiency in Lawn
Comments (6)I agree with BP and Dori. It's unusual for there to be an Fe deficiency because soil Fe is inadequate. Fe is generally deficient because high pH causes Fe to form insoluble compounds with other elements, or because other elements are found at very high levels in the soil and are creating an antagonistic deficiency (P or Mn are the prime antagonistic offenders). You can take steps to lower soil pH by adding organic matter or by using other pH lowering elements/compounds (FeSO4 is one, but be careful - it can cause an antagonistic Mn deficiency), or you can apply some form of chelated Fe with Mn, which is less affected by soil pH. What makes you think you're dealing with an Fe deficiency? Al...See MoreHelp with Iron and Nitrogen Deficiency
Comments (16)Wait-- rusty metal in the soil is not only hazardous, it is totally useless. This type of iron oxide (ferric) is insoluble and never available to plants. There is already a lot of it in most mineral soils, anyway. Box store employees usually know nothing about what they sell, but they have to pretend otherwise. Every garden counter has multiple iron products, probably both the chelates and ferrous sulfate. Labels in this section feature the word "green." For a quick fix, Miracid is high in both nitrogen and iron chelate....See MoreChelated Fe to correct Fe deficiency
Comments (3)Oh, guess I should have read this post before my response to the one above. Yes, foliar chelates are another option and the timing sounds right. But I don't deal with a lot of foliar applications for micros to be quite honest so take that opinion for what it's worth. It does look like your manganese and iron are both pretty low. Based on the other numbers I see there and taking into acount the extraction method for micros (I like dtpa for calcareous soils too, although I'd switch out the Mehlich 3 for Olsen Bray bicarbonate method for phosphorous) I'd say you would want manganese and iron at about 10 and 50 ppm, respectively. It would also be interesting to look at a foliar analysis for manganese. I wouldn't bother with iron in the tissue, unless it just comes as part of a testing package. Foliar analysis can't differentiate between Fe2+ and Fe3+. The plants will take up Fe3+ but they can only metabolize Fe2+. It's very common to see "sufficient" values returned for iron in plants that are clearly iron deficient....See MoreIron deficiency in citrus
Comments (8)Hi, Bass. Problem may not be THAT easily corrected, just by reaching for the Fe. I'm sure your soils drain well, just by looking at your handle. The reason I mention it (drainage) is because in saturated soils that drain poorly, low oxygen levels cause iron and manganese to become electron acceptors. This leads to their precipitation (iron and manganese) and, even though these elements might be present in soils, the plantÂs inability to assimilate them. Fe, Mo(molybdenum), and Mn (manganese) can all cause interveinal chlorosis. Iron deficiencies are also caused by too much Ca in soil and high media pH (from dissolved carbonates in your water? Iron additives won't likely help here.) Iron deficiencies are most readily seen in interveinal chlorosis of new leaves which will also often turn very light. Al...See Morewestes Zone 9b California SF Bay
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