is biochar a fertilizer?
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is biochar a fertilizer? is biochar a fertilizer? is biochar a nutrient? is biochar a nutrient? In soil, biochar breaks down very In soil, biochar breaks down very slowly slowly – – not in months, but decades, even centuries not in months, but decades, even centuries (oxidation & digestion) (oxidation & digestion) Biochar isn’t consumed by Biochar isn’t consumed by soil life soil life Fresh from a burner, biochar is sterile, Fresh from a burner, biochar is sterile, with no biological activity with no biological activity – no microbes – no microbes – and and hydrophobic hydrophobic – repels water – repels water Charcoal Charcoal Soil Minerals Soil Minerals Charcoal Charcoal Biochar Biochar Acrisol Acrisol Terra Preta Terra Preta Terra Preta Terra Preta Acrisol Acrisol typical Amazon soil typical Amazon soil Infertile clay Infertile clay ? Biochar is: Biochar is: sponge sponge to absorb & hold water to absorb & hold water storehouse storehouse to adsorp nutrient ions (C.E.C.) to adsorp nutrient ions (C.E.C.) substrate substrate habitat & housing for microbes habitat & housing for microbes Biochar Biochar Adding only biochar to soil Adding only biochar to soil retards plant growth up to 2 years retards plant growth up to 2 years Fertilizers must be added with Fertilizers must be added with biochar biochar What is Biochar? Biochar is fine-grained charcoal high in organic carbon, largely resistant to decomposition, produced from pyrolysis of plant and waste feedstocks. As soil amendment, biochar creates a recalcitrant soil carbon pool that is carbon-negative – – – – net withdrawal of atmospheric carbon. Enhanced nutrient retention capacity of biochar-amended soil reduces total fertilizer requirements, also climate and environmental impact of croplands. Scientific Advisory Committee International Biochar Initiative www.biochar-international.org click to continue
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Biochar. Terra Preta. Soil Minerals. Carbon. is biochar a nutrient?. is biochar a fertilizer?. What is Biochar? Biochar is fine-grained charcoal high in organic carbon, largely resistant to decomposition, produced from pyrolysis of plant and waste feedstocks . - PowerPoint PPT Presentation
Transcript of is biochar a fertilizer?
is biochar a fertilizer?is biochar a fertilizer?is biochar a nutrient?is biochar a nutrient?In soil, biochar breaks down very slowly In soil, biochar breaks down very slowly
– – not in months, but decades, even centuriesnot in months, but decades, even centuries(oxidation & digestion)(oxidation & digestion)
Biochar isn’t consumed by soil lifeBiochar isn’t consumed by soil lifeFresh from a burner, biochar is sterile,Fresh from a burner, biochar is sterile,
with no biological activity with no biological activity –– no microbes – no microbes – and and hydrophobichydrophobic – repels water – repels water
CharcoalCharcoal
Soil MineralsSoil Minerals
CharcoalCharcoalBiocharBiocharAcrisolAcrisol
Terra PretaTerra Preta
Terra PretaTerra PretaAcrisolAcrisoltypical Amazon soiltypical Amazon soil
Infertile clayInfertile clay
?Biochar is:Biochar is:spongesponge to absorb & hold waterto absorb & hold waterstorehousestorehouse to adsorp nutrient ions (C.E.C.)to adsorp nutrient ions (C.E.C.)substratesubstratehabitat & housing for microbeshabitat & housing for microbes
BiocharBiochar
Adding only biochar to soil Adding only biochar to soil retards plant growth up to 2 yearsretards plant growth up to 2 yearsFertilizers must be added with biocharFertilizers must be added with biochar
What is Biochar?Biochar is fine-grained charcoal high in organic carbon, largely resistant to decomposition,produced from pyrolysis of plant and waste feedstocks. As soil amendment, biochar creates a recalcitrant soil carbon pool that is carbon-negative – –– – net withdrawal of atmospheric carbon.Enhanced nutrient retention capacity of biochar-amended soil reduces total fertilizer requirements, also climate and environmental impact of croplands.
Scientific Advisory CommitteeInternational Biochar Initiative
www.biochar-international.org
click tocontinue
NPKNPK
biocharbiochar++
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Effect of bark biochar and fertilizerEffect of bark biochar and fertilizeron plant growth and soil propertieson plant growth and soil properties
in south Sumatrain south SumatraYamato 2004 unpublished
controlcontrol
Bark Biochar & FertilizerBark Biochar & FertilizerResearchResearch
Soil MineralsSoil Minerals
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Christoph Steiner1; W. G. Teixeira2; Johannes Lehmann3; W. Zech1
1 Institute of Soil Science, Univ. of Bayreuth, Germany 2 Embrapa Amazonia Ocidental, Manaus, Brazil 3 Dept of Crop and Soil Sciences, Cornell Univ., USA
267%267%881%881%
366%366%
3-Year Field Trials3-Year Field TrialsRice & SorghumRice & Sorghum
BiocharBiochar
