Friday, October 15, 2010

Fun Soil Facts!

A few fun soil facts from a book I'm reading for Soil Science (Tales From the Underground by David W. Wolfe):
- We may have evolved from clay! Basically, clays have a crystalline structure that could have evolved into DNA.
- The biomass underground probably exceeds that of the biomass above ground. Go microorganisms!!!
- Most chemical reactions take place in seconds. Nitrogen fixation takes 1.2 seconds.
- In the United States, more than 90% of fertilizer nitrogen needs in most cropping systems are met by man-made nitrogen fertilizer.

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