Iron deficiency in citrus
bonsaist
17 years ago
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birdsnblooms
17 years agoRelated Discussions
Nutrient deficiency / excess in Citrus
Comments (18)Great, you're using Foliage Pro. I'd go with a heavier dose, once or twice a week. With my Meyer Lemon, I comfortably fertilize with 1.5 teaspoons per gallon of water, once a week. I wouldn't want to re-pot so soon....and I hate to say it. Perhaps others will comment on the containers. I'm looking at the plants and anticipating more growth this season. There is an interesting debate regarding terracotta. I see that you're located in a zone 6, which means cold Winters. Many folks in the northeast, for example, are finding that black plastic containers help keep the roots warm and the plants more vital during the colder months, including the Spring transition out of doors. I hope some other growers will chime in. As for the Neem treatment....yes, treat all of your Citrus. I like to do lighter Neem treatments, repeated three times, three days apart. That said, the stippling on the leaves could be *old* damage, and there might not be any mites currently. But Neem won't hurt, so you might as well be pro-active. Josh...See Moreiron deficiency in mandarin?
Comments (14)Looks like micro nutrient deficiency. This is commonly caused by alkaline (hi-calcium) soil, subsoil or water. If this is the case, the best solution is to start checking for the cause before feeding more minerals (which will only become unavailable). The water is easy to check with a pool test kit. Sometimes it is buried building materials (concrete). Look for small pieces of natural limestone. Or it may be alkaline clay (look for yellow clay in the subsoil). While you're doing this, spray with a solution of 2 tsp. each of the following; Epsom salts (magnesium sulfate), Zinc sulfate, and manganese sulfate in 1 gal. reverse osmosis water. The magnesium may not be unavailable but just swamped out by an excess of calcium. A polymeric spreader sticker can be helpful. Especially if a tsp of ferrous sulfate is added. You will probably not find manganese readily available except where palm trees are sold in large numbers. Some micro nutrient sprays for citrus are available. Southern Ag makes one sold in the gulf coast region. EDTA chelated chemicals are not effective. Long term solution is addition of soil sulfur. This is hard to do without soil samples. It is easy to go too far and have a worse problem....See Morecitrus trees are fixxin to bloom!
Comments (3)Sounds like all your plants are doing really well. I think Valencia's bloom later than navals. I've seen many citrus trees with yellowing of the leaves which may indicate Iron deficiency. When Citrus begin to bloom and send out new growth, the aphids may start coming also, I like to use something with pyrethrin in it to control the aphids. I love it when all my plants are doing well, sitting back and chugging down an ice cold Heiniken. Cheers!...See MoreChelated iron versus scrap metal to correct iron deficiency
Comments (0)In areas where the top soil is deficient in iron, it is necessary to add it when you plant trees, shrubs, or roses until the roots go to the level where iron is available. Chelated iron sold at nurseries is expensive, but it works fast. Plants have the ability to absorb iron in other forms, and you can prevent a deficiency by adding material which will become part of the soil in the form of iron oxide (rust). When digging a hole for planting, you can throw crushed cans, bottle caps, old nails, and other scrap metal into the hole. In two or three years, the tin cans will have rusted away completely, and you may dig in some more later. Old nails and bottle caps can also be stuck into flower pots. Make sure the cans are not aluminum. When in doubt, test with a magnet. The old method of driving a nail into the truck of a tree is not of lasting benefit....See Morerickjames
17 years agobencelest
17 years agogardner_dragon
17 years agobonsaist
17 years agobencelest
17 years agobirdsnblooms
17 years ago
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tapla (mid-Michigan, USDA z5b-6a)