Remember this slogan by Omo? or was it Sunlight? Okay… by Unilever? Much as I don’t enjoy soil science much, thanks to an interesting experience a few years ago, here are some facts proving that dirt/soil (will use them interchangeably) is not just good but amazing.
- Most soil has 6 layers. It’s also known as the ‘Soil Profile’.
- Soil consists of 50% water and air. The other 50% is made up of broken rock and minerals from decaying flora and fauna.
- It takes 500 years to produce just under an inch of topsoil, this is the most productive layer of soil.
- The amount of sand, clay and silt is what gives different soil types their various textures. Most soils are a mix of all three as can be seen in the image below:
- There are more microorganisms in a handful of soil than the world population. For example, there are approximately 5,000 different types of bacteria in just one gram of soil.
- Soil acts as a sink/ storage /sequestrator of approximately 10% of the world’s carbon dioxide emissions.
- It stores approximately 0.01% of the Earth’s total water.
- Soil acts as a pollutant filter for underground water
- About 1.4 Million earthworms can be found in an acre of cropland. WOW. 1.4 Million! o_O. They enrich the topsoil by feeding on organic material and converting it into nutrients. They also make soil more absorbent and aerated.
Isn’t dirt great?