it has about 50% calcium carbonate and 40% magnesium carbonate, giving approximately 22% calcium and at least 11% magnesium.hen you buy garden lime, it has been ground into granules that can be coarse or very fine, or it could be turned into a prill. Used in gardens and lawns.It can reduce soil acidity that inhibits grass and vegetable growth by improving soil's low pH.
Ag Lime is made, essentially, from pulverized limestone. Dolomitic Lime is made from dolomite. It contains similar high levels of calcium, while also containing magnesium. Both can be effective for improving garden soil and provide a compelling case for the use of limestone for gardens. The principles of lime application for garden use are the same as for use in farming.  Dolomitic Limestone Characteristics. Dolomitic lime is a soil amendment made by grinding dolomite down so that it can be used in gardens and lawns. Although it is not technically limestone, dolomite is very similar to limestone in its high calcium content. If your lawn or garden needs calcium or magnesium, applying dolomitic lime can result in huge benefits. It can reduce soil acidity that inhibits grass and vegetable growth by improving soil's low pH. Dolomite /ˈdɒləmaɪt/ is an anhydrous carbonate mineral composed of calcium magnesium carbonate, ideally CaMg(CO 3) 2. The word dolomite is also used to describe the sedimentary carbonate rock, which is composed predominantly of the mineral dolomite (also known as dolostone). Dolomitic lime is made from dolomite, a type of rock very similar to limestone except it also contains magnesium. In North Carolina, dolomite is found only in the mountains. Both types of lime provide calcium for plants, but dolomitic lime also supplies magnesium, a nutrient often low in soils in our area. Lime is a soil amendment made by grinding limestone, a naturally occurring type of rock that is very high in calcium. Two types of lime are commonly used in lawns and gardens, agricultural lime and dolomitic lime. Agricultural lime, also sold as garden lime, is made from calcium carbonate. Dolomitic lime is an attractive rock. It's calcium magnesium carbonate. It has about 50% calcium carbonate and 40% magnesium carbonate, giving approximately 22% calcium and at least 11% magnesium. When you buy garden lime, it has been ground into granules that can be coarse or very fine, or it could be turned into a prill. Dolomite lime fertilizer is certainly allowed in organic gardening. It is not inherently bad, but how it is used in the garden is often detrimental. In horticulture, dolomite and dolomitic limestone are added to soils and soilless potting mixes as a pH buffer and as a magnesium source. Home and container gardening are common examples of this use. Dolomite is also used as the substrate in marine (saltwater) aquariums to help buffer changes in pH of the water. The word dolomite is also used to describe the sedimentary carbonate rock, which is composed predominantly of the mineral dolomite (also known as dolostone). Dolomitic limestone is a type of rock that includes up to 50% dolomite. Normal limestone is primarily made up of calcite and aragonite, but dolomite forms in the stone when the calcium ions in the calcite part are replaced by magnesium ions — this process is called dolomitization. Dolomitic limestone is occurs naturally and is mined in the same areas as dolomite and limestone individually. The stones that are not used for agricultural purposes are often crushed down and used as filler in the manufacturing of pavement and concrete. It's sometimes called dolomitic lime or dolomitic limestone, and provides more nutrients than straight lime. It's often used in addition to balanced fertilizers, particularly with seeding fruit. Dolomite is best used to change the acidity, or pH, of the soil. Start with a soil pH test, which you can buy at garden centers, to determine the existing pH. Most plants do best with a pH of 6.0 to 7.4. Dolomite differs from Lime sand and Limestone in that it contains magnesium as well as calcium. It is used to supply both of these elements and is a very effective neutralizing agent. It is a carbonate limestone type product that should contain between 8-12% Magnesium as Mg and 18-22% Calcium as Ca.  What It Contains. Dolomite is a limestone compound that contains calcium and magnesium. The best mixtures contain 8 to 12 percent magnesium and 18 to 22 percent calcium. These elements help influence the pH of the soil and provide valuable nutrients to plants. Dolomite is best used to change the acidity, or pH, of the soil. Start with a soil pH test, which you can buy at garden centers, to determine the existing pH. Most plants do best with a pH of 6.0 to 7.4.
http://www.bakerlime.com/many-uses-limestone/ http://www.ehow.com/about_6637147_dolomitic-limestone_.html https://en.wikipedia.org/wiki/Dolomite https://pender.ces.ncsu.edu/2013/01/does-your-lawn-or-garden-need-lime/ http://www.smilinggardener.com/organic-soil-management/dolomite-lime https://en.wikipedia.org/wiki/Dolomite http://www.wisegeek.org/what-is-dolomitic-limestone.htm http://homeguides.sfgate.com/dolomite-used-plants-71587.html http://www.dolomite.com.au/products/what-is-dolomite/ http://homeguides.sfgate.com/dolomite-used-plants-71587.html
what is dolomitic lime used for