Shade trees for alkaline soil
Joe Williams
4 years ago
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whaas_5a
4 years agolast modified: 4 years agoL Clark (zone 4 WY)
4 years agolast modified: 4 years agoRelated Discussions
Do pine trees make alkaline soil more acidic, or is that a myth?
Comments (36)There are many things that determine what a soils pH will be, and all have been clearly laid out here by several contributors. What the soil is composed of, rainfall, and amount of organic matter all play a role in how many free Hydrogen ions are in that soil and soil pH is a measure of that. What is needed to change a soils pH depends on where it is and what is meant to be done. Adding lime (Calcium Carbonate) will reduce the free Hydrogen ions and raise the soils pH while Sulfur adds more of them and lowers the soils pH. A good reliable soil test from a good soil testing lab is a good source of information and they should be able to tell you how much Sulfur needs to be added to make the needed changes. Adding 1 pound per 1,000 square feet when 10 pounds is needed will not do much of anything. Throwing a handful or three of something is more a waste of time, money, and energy than any help. Here is a link that might be useful: understanding soil pH...See MoreSugar maples as street trees and crababbles in alkaline soil?
Comments (4)Personally, I would think the Fall Fiesta would prefer the acid, but if everything else is OK, then a PH that is a little high would be OK depending on just how alkaline. 7.1-7.2 would probable be ALLOT better than 7.5 or higher. Might need some supplemental nutrients though (i.e. iron). If you are willing to do an annual spread of elemental sulfur, then that would help the PH, but adding lots and lots of leaf litter would add acid as well as they decomposed. That is exactly how allot of soils end up being acidic in the first place. On a positive note, I LOVE our Fall Fiesta Sugar Maple. It was only planted last fall, but still gave us to 12-18 inches of growth this spring (sometimes a full inch a day on night that were very mild), filled out allot, and is doing wonderfully. They grow faster than the standard of the species, with the patent application stating the original tree at 10 years old, was either 20 or 25 feet tall (can't remember which off the top of my head). I have also seen trees of locally of Fall Fiesta by checking the growth marking on limbs, grew as much as three feet some years. Shantung probable grows faster, and is certainly more tolerant than any sugar maple that I know of, but you already have the sugar maples, so if you can make it work, they are great trees in and of themselves. Otherwise find them a new home and look for something tougher like the Shantung. JMHO...See MoreSoil Alkaline 7.5
Comments (9)Ebay is your friend. Iron is the only micronutrient that is problematic to deliver in a usable form in alkaline soil. Iron doesn't work well as a foliar spray and is horribly staining. I've never seen the proper chelate offered in an Arizona nursery, which is curious. Ferriplus or Sequestrene 138 is what you want, although they are a bit expensive. Follow the directions for soil application. The stuff will stain anything it touches red if it gets wet. Late winter ~ early spring is the most critical time for iron deficiency. There is actually plenty of iron in most Arizona soils, but the combination of cold winter soil and alkalinity totally locks out availability, especially for some rootstocks. Only the chelates in Ferriplus or Sequestrene 138 are effective at pH > 7.5, other chelated products are intended for areas that don't have our alkaline soil issues. The problem subsides somewhat as the soil warms. Zinc, manganese and magnesium are also common problems in winter alkaline soil but are easily and very cheaply cured with simple foliar sprays. Zinc sulfate and Manganese sulfate are cheap on Ebay. Magnesium sulfate is epsom salt, available at any drug store. Zinc and manganese can be applied together, magnesium is best on it's own. Wait at least a few days between applying the zinc + manganese solution and applying the magnesium. Magnesium works very well as a foliar spray, but also works well applied to the soil. Zinc and Manganese work much better as foliar sprays. For Zn + Mn, mix a solution of ~1/2 teaspoon of each mineral salt in a gallon of pure water. Purified water from a vending machine is much preferable to local tap water. It helps with absorbtion to add 1/2 teaspoon of urea per gallon to the mix, if available. Spray the leaves to runoff after sundown. Application 3 times a year works for me. Early spring application is the most important. There are premixed, all-in-one micronutrient products available at nurseries and garden centers, but in my experience it's worth the effort to order the chemicals to make the proper application, separate from competing minerals. It is much more effective. The chemicals are cheap, just a bit of hassle to order. Here is a link that might be useful: Ebay Ferriplus vendor....See Moretropical fruit trees and alkaline soil
Comments (1)I know what many of the people/experts/references say... But I think tropical fruits are pretty tolerant of pH as long as they get all the nutrients/drainage they need. I grow in the ground, 100% red clay- (I assume it is though I have never tested it) alkaline/ not great drainage. But many are planted on hills, so the water runs off. I grow about 80 different tropical fruits very easily here. I add grass clippings around the plants when I remember, I fertilize with citrus fertilizer every 3 months. But that is it. Growing in pots is different. The soil pH may be more important....See MoreSmivies (Ontario - 5b)
4 years agohairmetal4ever
4 years agolast modified: 4 years agohairmetal4ever
4 years agotreebarb Z5 Denver
4 years agoarbordave (SE MI)
4 years agolast modified: 4 years agoJoe Williams
4 years agohairmetal4ever
4 years agoJoe Williams
4 years agowhaas_5a
4 years agoarbordave (SE MI)
4 years agoJoe Williams
4 years agoSmivies (Ontario - 5b)
4 years agoJoe Williams
4 years agoSmivies (Ontario - 5b)
4 years agoarbordave (SE MI)
4 years agohairmetal4ever
4 years agohairmetal4ever
4 years agoJoe Williams
4 years agohairmetal4ever
4 years agoL Clark (zone 4 WY)
4 years agolast modified: 4 years agowhaas_5a
4 years agolast modified: 4 years agoarbordave (SE MI)
4 years agolast modified: 4 years agoJoe Williams
4 years agowhaas_5a
4 years agoarbordave (SE MI)
4 years agolast modified: 4 years agoL Clark (zone 4 WY)
4 years agolast modified: 4 years agowhaas_5a
4 years agoarbordave (SE MI)
4 years agolast modified: 4 years agoarbordave (SE MI)
4 years agolast modified: 4 years agoarbordave (SE MI)
4 years agolast modified: 4 years agoJoe Williams
4 years agowhaas_5a
4 years ago
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