Quote:
Originally Posted by Nicolas Naranja
... Carbon additions will improve yields immensely on poor sandy soils. ...
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Depending on the form of the carbon. Some commercial and homemade varieties of Biochar have been shown to limit nitrogen availability to plants. Other forms of Biochar have been found to be beneficial in certain soils. A recent journal issue devoted to this topic can be found here:
Journal of Plant Nutrition and Soil Science, Volume 177, Issue 5.