Is dolomite more soluble than limesand?
Dolomite is less reactive in the soil than limesand for the same neutralising value (due to the Magnesium content which reduces the dissolution rate). The rate at which it dissolves will also depend on the fineness of the product. The finer the particles, the higher the total surface area of the particle exposed to the soil solution and the more rapidly they will dissolve. For carbonate based liming materials such a dolomite, limestone and limesand, particles greater than 1mm-2mm in diameter will not dissolve quickly enough to affect soil pH within 10 years of application. In most circumstances limesand will be the finer of the three materials and will have a higher Neutralising Value (NV).
