Fertility

On the Practical Biology web site, there's a nicely done lesson plan that lays out how to do biochar, and biochar + compost tests with Broad Beans

Lesson plan link:

http://www.nuffieldfoundation.org/practical-biology/investigating-effects-biochar-soil-fertility

This lesson plan talks kids through laying out a plot test with proper controls and blending biochar.

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Effects of Soil Microbial Fertility by Charcoal in Soil
Makoto Ogawa, Kansai Environment Engineering Center, Kansai Electric Power Co. Ltd, UGA Conference 2004

Characteristics and Function of Charcoal

1.Porous substance with high water and air holding capacity; Suitable habitat for some microbes and plant growth, good material for soil amendment, absorption of chemicals and humidity control

2.High alkalinity ; Neutralization of acidic soil and improvement of chemical components of soil and

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Soil Fertility and Fertilizer Use
Krishniworld, The Pulse of Indian Agriculture

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Isolating Unique Bacteria from Terra Preta Systems: Using Culturing and Molecular Tools for Characterizing Microbial Life in Terra Preta
O'Neill, Brendan Grossman, Julie Tsai, S.M. Gomes, Jose Elias Garcia, Carlos Eduardo Solomon, Dawit Liang, Biqing Lehmann, Johannes Thies, Janice
Poster presentation from the 2006 World Congress of Soil Science in Philadelphia, PA
16-Aug-2006

The greater fertility of Terra Preta (TP) soils is thought to be due to their high black carbon (BC) content, which contributes to increased nutrient and moisture retention, and increased pH.

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