iron deficiency and dry mouth
15 years ago
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- 15 years ago
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Will Iron Sulfate help Sulfur deficiency?
Comments (3)Is the yellowing prevalent in older foliage or newly emerging leaves? Did you check for mites/scale ...? What are you using for fertilizer? If you're using a soluble fertilizer at regular intervals, it's very unlikely there is a physical deficiency of Fe; more likely something pH induced or some other issue. S deficiencies in containerized plants are rare, BTW. If the plant has been in the same soil for more than a year, and your fertilizer doesn't contain Mg, it's a very real possibility that you're seeing a Mg deficiency. If you suspect a Mg deficiency, try mixing 1/2 tsp of MgSO4 (Epsom salts) in a quart of water and spritzing some of the leaves. If they green up, it was probably a Mg deficiency, but the nice thing about the MgSO4 is that it will also correct any S deficiencies. There ARE other cultural conditions that can cause deficiencies, but usually, when you start adding a little of this & that to try to correct a singular nutrient issue w/o strong indication of what's wrong, you end up creating problems rather than solving them. It's better to start from the bottom up, with a close look at your soil, then your choice of fertilizer, because in the end, your soil choice is the most probable source of trouble, if you can eliminate light as the issue. Al Here is a link that might be useful: Also, clicking me might be helpful...See MoreIron Deficiency in some rose varieties
Comments (24)Greenhaven, your other questions. Nitrogen is transient in the soil. It stays put as part of insoluble proteins until they are converted by bacteria to soluble urea (months/years). Then it passes into ammonium and finally nitrate. Unused nitrate washes out of the soil. But in natural systems it is almost all taken up and recycled into proteins. Organic ferts contain slow-release N mainly in protein form. Potassium binds lightly to clay and decayed organic matter so it doesn't wash away. K in fresh organic matter is soluble and no different from manufactured sources. In mixed organic fertilizers, K is usually supplied by inorganic potassium sulfate. Phosphate binds to clay. Also, it readily forms insoluble compounds with Ca, Mg, Zn, Cu, and Fe which don't wash out, and which can reduce availability of trace elements. In fresh organic matter and manure, there are organic P compounds that need to be broken down by bacteria. Bone meal and rock phosphate contain insoluble phosphates that must be cracked by acid to become available to plants. Superphosphate is soluble and plant-available, but it converts to insoluble substances over a period of weeks and stays put. I don't think there's a difference between organic and inorganic ferts in the buildup of P and K. It just depends on how much excess potash and phosphorus we throw at the roses over the years....See MorePossible Iron deficiency, now what?
Comments (1)My bet is you're treating them too well ;-)! It looks like you've doesed them pretty well for the time being. Now let nature takes it's course. Only water when dry and see if the problems clear up. The manure (if aged and not fresh) should be plenty as far as nutrients. If the problems persist, maybe a small does of Epson salt. The Mg will green them up. Jamie...See MoreIs this mango leaf iron deficiency or too wet
Comments (4)is it just newer, or just older leaves ? also, is it colder than usual ? the temp can effect PH, which can effect uptake of some minerals... My guava leaves turn red and purple when its cold and the soil is wet. it changes the PH limiting a mineral ( i think phosphorus ?) i give mine iron chelate and epsom salt 3-4 times a year. (foliar spray and drench) either way, i would let it dry out a bit first, and keep an eye on the new growth leaf color. =============================== Signs of Nutrient Deficiency Calcium: New leaves misshapen or stunted. Existing leaves remain green Nitrogen: Upper leaves light green, lower leaves yellow. Bottom (older leaves) yellow and shrivelled. Carbon Dioxide: White deposit. Stunted growth. Plants die back Phospate: Leaves darker than normal. Loss of leaves. Iron: Young leaves are yellow/white with green veins. Mature leaves are normal. Potassium: Yellowing at tips and edges, especially in young leaves. Dead or yellow patches or spots develop on leaves. Manganese: Yellow spots and/or elongated holes between veins. Magnesium: Lower leaves turn yellow from tip inward. Veins remain green....See More- 15 years ago
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