The effects are short lived but serve to soften the soil enough for plowing and sowing. Yes, you can. Adding too much gypsum to the soil can lead to beneficial elements such as aluminum, magnesium, iron, and manganese getting eliminated. The lack of these nutrients can hinder the growth of plants. With incorrect use, gypsum can also cause damage to our gardens. It can wash out manganese, iron, and aluminum from the soils. The removal of these elements may contaminate the watershed areas and will have a detrimental effect on the growth of plants.
Amending your soil properly can overcome heavy, compacted clay and get it back on track for healthy lawn and garden growth. Adding materials such as organic compost, pine bark, composted leaves and gypsum to heavy clay can improve its structure and help eliminate drainage and compaction problems.
The use of gypsum allows the salt to leach away into the sub-soils below the roots of the lawn, rendering it harmless. Heavy watering is required in these areas to aid in the leaching process. Gypsum has no plant nutrients, such as nitrogen, so there is no chance of plant damage when using it.
Gypsum improves soil structure by displacing sodium and magnesium on the surface of clay particles with calcium. Gypsum calcium sulfate is sparingly soluble, but the sodium and magnesium sulfates that form in the soil solution are very soluble.
They add to the overall concentration of soluble salts in the soil. Dig in plenty of bulky organic matter such as manure or, ideally, composted bark, as this can make a noticeable improvement to the working properties of clay.
Apply organic mulches around trees, shrubs and other permanent plants as these will reduce summer cracking and help conserve moisture. Additions of compost, peat moss or manures over the long haul will improve the drainage and aeration of the soil. Compost is the best method of improving soil drainage. So unless there are impurities in the Calcium sulfate, it should not influence the pH of your soil when added to the soil. There have been published reports of impurities affecting pH.
Smaller soil particles lump together floculate to form tiny soil balls. In clay soils, this has not happened to any degree. Both of these things are good for the tiny feeder roots.
If your soil is a Southern soil — based on different parent material like iron, the calcium can be used to floculate the tiny clay particles into larger ones. If is also about whether your soil is sodic. This is a measurement of soil sodium content. Soils that are high in sodium have a different electrical charge to them that prevents the electrical bonding of calcium to soil particles.
So a sodic soil will not be helped by gypsum either. What I often hear and read is that the neighbor digs the garden every spring aerates it adds organic matter aerates and separates the soil particles and adds some gypsum while digging. And then gives gypsum the credit. Heck, digging and adding organic matter are going to do the job here — not the gypsum. Most agricultural applications simply dust it onto the soil surface and then water it in or allow rain to drive it into the ground.
In a recent study , researchers have shed new light on the multi-stage process by which gypsum grows — and the findings could help develop more efficient ways to manufacture the material.
The new research, published in Nature Communications, builds on a body of earlier work trying to sort out how gypsum forms. Prior to , the generally accepted explanation was that gypsum — or calcium sulfate dihydrate, meaning the mineral carries two water molecules for each calcium sulfate unit — precipitates naturally from aqueous solutions in a straightforward, single-step process.
Then, in , a team of researchers, including some of the authors of the new Nature study, challenged that perspective in a study in Science. The group reported that gypsum actually forms in a three-step process: precipitation of nanocrystals of bassanite — or calcium sulfate hemihydrate, with one water molecule for every two calcium sulfate units — followed by the assembly of those crystals into larger aggregates, and finally transformation of the aggregates into gypsum.
In prior research on gypsum, scientists had utilized X-ray diffraction and electron diffraction to investigate dry, powdered samples of the gypsum precursors.
For the study, however, the team, led by Tomasz Stawski of the GFZ German Research Centre for Geosciences, used X-rays generated by a synchrotron particle accelerator to study samples of the gypsum precursors calcium chloride and sodium sulfate mixed in aqueous solution, thus more closely approximating the conditions in which the mineral forms in nature.
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