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Using Biochar in Soil. Steps to Prepare Biochar. The 4M ’ s. Moisten. Fresh char is bone dry and sterile. Hydrophobic, due to tar & resin residues. Excess moisture is also trouble. M oisten. Micronize. Maximize surface area. M icronize. Rice grain size, down to dust.
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Using Biochar in Soil Steps to Prepare Biochar The 4M’s Moisten Fresh char is bone dry and sterile Hydrophobic, due to tar & resin residues Excess moisture is also trouble • Moisten Micronize Maximize surface area • Micronize Rice grain size, down to dust Grind, crush, screen Weedy vs. woody feedstocks Water-soluble, low-weight carbons Mineralize Mineralize Huge internal adsorption capacity High efficiency delivery of nutrients • Microbial • Inoculation Charge with sea minerals (trace elements) Major Cations (Ca, Mg, K) & Anions (N, P, S) MicrobialInoculation Encourage colonization by microbes Simplest method: blend with compost Commercial cultures: BD preps, EM, SCD BioAg, Trichoderma, Mycorrhizae…..