How To Improve Your Soil - HumgardensAdding sand to a clay soil will probably make it harder and more like cement. Another is that adding gypsum to a clay soil will improve it through a process called.improvement of gypsum soil by adding cement,Never Add Clay to Sand or Sand to Clay | Pat Welsh Organic and .Adding sand to clay soil, in any amount, has been proven by the University of . Gypsum breaks up clay soils that are alkaline by releasing soluble calcium which .. the effect of adding sand to clay soil makes for diminished drainage (cement). ... The best and safest way to improve poor soil is to dig in organic matter thus.
improvement of gypsum soil by adding cement