Terra preta
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Terra preta, also known as Amazonian dark earth or Indian black earth, is a type of very dark, fertile anthropogenic soil found in the Amazon Basin. In Portuguese its full name is terra preta do índio
Homemade terra preta, with charcoal pieces indicated by white arrows
Manantenina bushfire
Pre-Columbian agriculture in the Amazon basin refers to the farming practices developed by the indigenous communities of the Amazon rainforest before the European conquest. Contrary to the common misc
Terra preta
…and organic matter. The combination accumulates nutrients, minerals and microorganisms and withstands leaching. Terra preta soils were created by the pre-Columbian farming communities between 450 BCE and 950 CE. Soil depths can reach 2 meters (6.6 ft). It is reported to regenerate itself at the rate of 1 centimeter (0.4 in) per year…
Brazil nuts: Shelled Brazil nuts on left; on upper right, a freshly cut Brazil nut fruit and 2 Brazil nut seeds in their shell; lower right, the Brazil nut capsule