As scientists began to investigate what had caused the drop in land fertility, they discovered that those floodwaters carried with them minerals, nutrients and crucially, clay particles from the ...

I would like to improve the heavy clay soil in my vegetable garden. A friend suggested that I rototill several inches of sand to improve the drainage. Is that a good way to improve clay soil ...

Soils are composed of a mixture of sand, silt, clay and organic matter. Both the clay and organic matter particles have a net negative charge. Thus, these negatively-charged soil particles will ...