Alkaline clay soil seeking acidic amendments
strawchicago z5
12 years ago
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Comments (24)
toxcrusadr
12 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 MoreAnnTn's clay soil is acidic, mine is alkaline
Comments (12)Yes, mine's the acidic clay. Redsox, you're going to need to find out where the alkalin component of yours is from. Along the Mississippi and other major rivers there's a material called Loess, and it's wind blown river deposits that happened in the pleistocene (Ice ages and inter-glacials) and the river deposits were 'cemented' together by calcium deposits along plant roots. If you're on loess, road cuts through the loess erode back to vertical walls, regardless of how they are graded. If you're on reworked loess, then you've got calcium as a fine silt or clay size part of your soil (and it's much more avaiable to plant roots.) Dr. Huey should love those alkalin conditions. Unless they are too alkalin. Are there any folks nearby growing blueberries, mountain laurel, rhododendrons or azaleas?...See MoreDoes Dr. Huey prefer acidic or alkaline soil?
Comments (8)There are a lot of folks in the southeast who loathe Dr. Huey because Dr. Huey doesn't do well in our acidic red clays. A book I have from Holland touts Dr. Huey as thriving in alkalin soil which would explain why Dr. Huey was so widely used in the playa (alkalin) lake beds in California....See MoreRhodies for alkaline and heavy clay soils (Inkarho)
Comments (3)The problem that develops with graft unions when the plants get older is that the growth rate of the scion and the rootstock must be the same or one becomes much larger than the other and the cambium layers don't match. To avoid this Inkarho has patented several rootstocks so they can match more closely the growth rate of the scion. Two of them are rhodunter 37 and rhodunter 48. Both are the result of a planned breeding program between unpatented Rhododendron fortuneiÃcv.ÂCunningham's WhiteÂ. The development of Inkarho rootstocks is interesting. The rootstock was developed through an extensive breeding programme at the German Federal Institute of Horticultural Breeding at Ahrensberg. In the selection procedure the seedlings were subjected to growing conditions at a pH level of 7 for a period of six months. Seedlings which survived and were selected were then propagated. 20 rhododendron varieties were grafted onto the clonal rootstocks for screening trials for compatibility and growth rates. . The result is a clonally propagated rootstock with a high lime tolerance which can be grown satisfactorily at relatively high pH levels - pH 6.0-6.5. The claim is that they will establish on clay soil with a pH as high as 7.0. Although not particularly alkaline, the majority of other rhododendrons rarely do well above a pH of 5.5 - 6.0....See Morenovascapes
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wayne_5 zone 6a Central Indiana