04 Jul '11, 9am

Dirt vs. soil

Dirt, or more accurately, soil, is amazing stuff and something that we very much take for granted. But not all dirt/soil is not created equal. I've been fascinated with soil since I discovered how long and how much material it takes to make it. For the sake of clarification, let's make a couple of distinctions. Dirt - mainly mineral based; pebbles and finely ground rock. Soil - mineral, plant, fungi and animal based. It's easy to tell dirt and soil apart. Soil will usually be darkish in color and have a rich earthy smell. Dirt just tends to smell like dust. There's a lot of dirt around the world, it's in plentiful supply - no worries there. The problem with dirt is that it's a filler and has very little nutrient content as its primarily composed of basic minerals - calcium, iron etc. While these are required to some degree by plants, the real life giving properties are in ...

Full article: http://www.greenlivingtips.com/articles/266/1/Dirt-vs-soi...

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