How biochar works, and when it doesn't: A review of mechanisms controlling soil and plant responses to biochar - Joseph - 2021 - GCB Bioenergy - Wiley Online Library
A critical review of biochar-based nitrogen fertilizers and their effects on crop production and the environment | SpringerLink
New project will develop advanced biochar fertilizers
Biochar overview
Amazon.com : Char Bliss - Premium Biochar Organic Fertilizer Supplement - All Natural Soil Enhancer for Stimulating Plant Growth! Great for Potting and Gardening! (1 Cubic Foot) : Patio, Lawn & Garden
What is Biochar? - Regeneration International
Sustainable biochar-based soil fertilizers and amendments as a new trend in biochar research - ScienceDirect