Biochar and soil environment
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Transcript of Biochar and soil environment
BIOCHARBiochar is another name for charcoal used for purposes other than combustion.
Like all charcoal, biochar is created by the pyrolysis of biomass.
BIOCHARCULTUREBiocharculture is a holistic approach that has been historically tested, traditionally practiced, is culturally integral, economically viable, socially responsible, environmentally sustainable, and agreeable as a policy.
The uses of biochar—as part of biocharculture—include its application in the areas of soil management, livestock, biomass energy, water purification, green habitats, sanitation, food, health, etc.
BIOCHARCULTURE ADAPTATION BENEFITS
Securing the crop from drought and climate
variabiiity
Reclaim the degraded soils water conservation
Lessen the impact of hazardous pesticides
and complex chemicals
reducing emissions and increasing the carbon
sequestration
Conversion of biomass into biochar
Increase in crop yieldincreases in C, N, pH, and available P to the
plants
Impacts of biochar last more than 1000 years.
SUSTAINABILITY OF BIOCHARBiocharculture integration into traditional and local practices should be encouraged. Encouraging local communities to produce and use biochar with locally available raw material is considered sustainable.
Biochar blends are mostly organic / natural
Major challenges
Climate change - variability - extremes
Soil fertility Water management
Impact of hazardous
pesticides and nitrogen fertilizers
Burning of crop residue
Alkalinity of soils
http://www.fao.org/docrep/003/w2612e/w2612emap12-e.pdf
Damage has occurred on 15 percent of the world’s total land area (13 percent light and moderate, 2 percent severe and very severe), mainly resulting from erosion, nutrient decline, salinization and physical compaction.
Developing Countries Climate• Arid and semi-arid areas account for one third of the earth’s surface land
area.• In many parts of the subhumid and semiarid tropics, crop yields are
declining on response to inputs such as fertilizers, and droughts and shortages of irrigation water are increasingly evident.
• Sub-Saharan Africa and Asia pose two different challenges in raising food production to meet their food needs.
• ICRISAT (1998) estimates that semi-arid areas, especially within the tropics, cover most parts of the developing nations in the world including Latin America, most parts of sub-Saharan Africa, a large portion of Eastern and Southern Africa and parts of India and South East Asia.
By 2030 ensure sustainable food production systems and implement resilient agricultural practices that increase productivity and production, that help maintain ecosystems, that strengthen capacity for adaptation to climate change, extreme weather, drought, flooding and other disasters, and that progressively improve land and soil quality
Climate Smart Sustainable agriculture
Today’s challenges for sustainable agricultural development are to respond to increasing demand for food, adjust to rapid climate changes caused by global warming, and reduce agricultural greenhouse gas emissions (FAO 2008a).
Climate change mitigation in agriculture will require more efficient use of fertilizer, soil conservation, and better production management.
Under current fertilization practices, crop plant uptake of nitrogen as a nutrient is about 50 percent, with losses and emissions to the atmosphere through runoff and leaching from soil erosion (Takle and Hofstrand 2008; FAO 2001).
ENVIRONMENTAL
CARBON SEQUESTRATI
ON
REDUCED GREEN HOUSE
GAS EMISSIONS
SECURING FROM CLIMATE
VARIABILITY
ONE OF THE GLOBAL
WARMING AND CLIMATE CHANGE
MITIGATION SOLUTIONS
LIVELIHOODS
INCREASED CROP YIELD
INCREASED INCOME
RECLAMATION OF DEGRADED SOILS
BIOLOGICAL
- INCREASED SOIL MOCROBES AND
FUNGI. REPULSION OF
ANTS AND TERMITES,
PHYSICAL
- SOIL MOISTURE RETENTION, SOIL
TEXTURE, AND TEMPERATURE, SURFACE AREA
CHEMICAL
RETENTION AND ACCESS OF NITROGEN,
PHOSPHOROUS, ADSORBTION OF
HAZARDOUS PESTICIDES
POLICY
TECHNOLOGY
RESEARCH
LOCAL PRACTICES
BIOCHARCHARCOAL
PLUS AMENDMENTS
TO SOIL
BIOCHAR FRAMEWORK
Other Environmental Applications
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o. o
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pons
esBIOCHAR APPLICATION
Source: World Bank
SOURCES OF BIOMASS FOR BIOCHAR
CROP RESIDUE (800 million tons of biomass burnt)
COTTON STALKS (22.3 million tons generated)
PROSOPIS JULIFLORA
RICE HUSK
OTHER BIOMASS
(in India)
Plants
Stoves
Biochar
Soil FertilityCarbon SequestrationEmission reductionWater conservation
EnergyEmissions reductionBiomass conservationBiochar as byproduct
Carbon as biocharWater and fertilizers conservationCarbon sequestration
Note: Presenter has designed low cost highly efficient 50 good stoves that produce biochar as a byproduct. http://goodstove.com Also see the book Understanding Stoves http://metameta.nl/wp-content/uploads/2012/10/Understanding-Stoves-okt-10-webversion.pdf
A B C
CHIMNEY
PRIMARY AIR
SECONDARY AIR
GEO metal retort
Magh biochar retort 2
Magh biochar retort 1
BIOCHAR PRODUCTION TECHNOLOGIES
BIOCHAR COMPOST BIN
EFFICIENT, CONVENIENT AND LOW-COST CONVERSION OF DOMESTIC BIOWASTE INTO COMPOST USING BIOCHAR
COMPOST REMOVAL OPENING FOR LARGE SIZE BIN Dr. N. Sai Bhaskar Reddy
BIOCHAR COMPOSTING BIN (CYLINDRICAL) WITH PLANTS (AEROBIC)
BIOCHAR COMPOSTING BIN WITH PLANTS (AEROBIC)
BIOCHAR
LEACHETS
COMPOST BIN WITH HOLES
COMPOST BIN = FOOD WASTE (1 PART)+ SAW DUST / DRY LEAVES (2 PARTS) + BIOCHAR POWDER (1 PART)
COMPOST
COVER
COMPOST REMOVAL OPENING FOR LARGE SIZE BIN
HAND WASH
Dr. N. Sai Bhaskar Reddy
BIOCHAR COMPOSTING BIN (CONICAL) WITH PLANTS (AEROBIC)
COMPOST REMOVAL OPENING FOR LARGE SIZE BIN Dr. N. Sai Bhaskar Reddy
BIOCHAR COMPOST BIN USES
CONVERTING BIOWASTE INTO COMPOST
BIOCHAR COMPOSTING
2 / 3 WEEKS TO CONVERT BIOMASS INTO COMPOST
AEROBIC COMPOSTING – NO SMELL
MANAGEMENT OF WASTE IN URBAN AREAS
VALUE ADDITION TO WASTE
COLLECTION OF LEACHATE
BATCH LOADING OF COMPOST MATERIAL AND REMOVAL FACILITY
ADOPTABLE IN URBAN AREAS WITH LESS SPACE
HAND WASH FACILITY
GROWING PLANTS IN THE COMPOST OTHER BENEFITS
Dr. N. Sai Bhaskar Reddy
All farmers can adopt biochar, and one need not be
in a hurry to apply large quantities to achieve a bumper yield. Annual
incremental application is more sustainable for the
farmer and for the environment.
Biochar application reduces the burden of farmers in several ways, namely by maintaining and enhancing soil fertility.
Incremental biochar compost application
- Soil microbes adapt to the new environment.
- In the initial phase, some biochar removes salts and other poisons from the soil, which is a process that requires some time. The later subsequent application of biochar compost improves soil conditions.
- With the application of biochar compost structure and texture of the soil changes over a period of time.
- Incremental application addresses the sustainable use of biomass, which is converted into biochar.
- For the user, the burden of the cost of application of biochar compost is not high if applied incrementally.
Biochar protects and enhances both macro and micro biodiversity.
Microbial habitats are enhanced through the unique structure and
properties of biochar. Biochar-amended soils have higher
microbial biodiversity.
Biochar amended soils show high levels of microbial biodiversity.
Biochar is like a coral reef for the soil, creating a great habitat for all
soil life diversity.
Biochar and soil microbes minimize the use of purchasing inputs and
maximize the efficiency of soil microbes use.
The author has developed an area with 200 species of plants
conserved on half–an-acre of land to develop soil microbial culture
for inoculation into biochar.
Physical - Biochar reduces soil bulk density.
- Biochar increases soil aeration.
- Biochar changes the soil structure and texture through changes in physical and chemical properties.
- Biochar lessens the hardening of soils.
- Biochar helps to reclaim degraded soils.
- Increased Cation Exchange Capacity.
Chemical - Biochar reduces soil acidity by increasing pH (also called the liming effect).
- Biochar helps soil retain nutrients and fertilizers (Lehmann, 2006 in Hansen, 2008).
- The application of biochar improves soil fertility via two mechanisms: (1) by adding nutrients to the soil (such as K, to a limited extent P, and micronutrients); (2) by retaining nutrients from other sources including nutrients from the soil itself.
- Biochar increases C, N, and P availability to plants, because biochar absorbs and slowly releases fertilizer.
- Biochar increases in the soil levels of available Ca, Mg, P, and K.
- Biochar helps to prevent fertilizer runoff and leaching, allowing the use of less fertilizer and diminishing agricultural pollution to the surrounding environment.
Biochar mitigates the impact of hazardous pesticides and nitrogen fertilizers on the local environment and ecology.
- Biochar absorbs complex fertilizers and pesticides in soil, thus lessening their impacts.
Biological - Biochar increases soil microbial respiration by creating space for soil microbes.
- It increases soil biodiversity and soil-life density in the presence of organic carbon.
- Biochar increases arbuscular mycorrhizae fungi. Soil aggregation also improves due to increased fungal hyphae.
Biochar helps to lessen the impacts of termites on the biomass in agricultural field.
The presence and density of earthworms increase in soil treated with biochar over time.
Ants are more repellent to the freshly added biochar, and over a period of time the biochar’s impact on ants lessens.
LIVELIHOODS• Agriculture productivity increases• Low input agricultureNatural
• Local jobs and equity• Local enterprisesSocial
• Least skills required• BiocharcultureHuman
• Local technologies• Low energy Physical
• Low carbon economy• Low costFinancial
• Carbon sequestration and energy security• Mitigation and adaptation to climate changeEnvironment
MARKETLow price of biochar in the developing countries might trigger exports
Subsidies a hindrance
Lack of awareness
Gardening
Agriculture (Large Farms)
Household
Others
PRICE OF BIOCHARUnblended biochar and biochar products blended with other materials are being sold in many countries at a wide range of retail prices ranging from $0.08 to $13.48 per kilogram. The average price reported was $2.48 per kilogram.
http://www.biochar-international.org/State_of_industry_2013
CULTURAL
SPIRITUAL
BELIEFS
RITUALS
FESTIVALS
ALTARS
CREMATION
SOURCES (BIOMASS)
GOOD STOVES• TLUDs• Other
stoves
CROP RESIDUE
POULTRY LITTER
WASTE MANAGEMENT• Sludge
PRACTICES
FOOD PRESERVING
FOOD
CLEANING
MEDICINE
MATTRESS
TOOTH POWDER
AIR QUALITY• CO2 / CH4WATER
TREATMENT
AQUARIUM /
TERRARIUMS
BIOCHAR BRICKS
BIOCHAR
URINALS
SOAK PITS
FILTERING MEDIA
INSECT REPELLE
NT
SOIL AMENDMENT
INCREASED PRODUCTI
ONSOIL
TEMPERATURE
REGULATED
MOISTURE RETENTION
WATER CONSERVA
TION
NITROGEN /
PHOSPHOROUS
RETENTION
NURSERIESPESTICIDES ADBSORBTI
ON
SOIL MICROBES DENSITY
INCREASE
BIOCHAR COMPOST
EARTHWORMS
INCREASE
TERMITES / ANTS
REPULSION
CARBON SEQUESTRA
TION
ANIMALS
POULTRY - CH4
REDUCTION
LIVESTOCK - URINE AND
DUNG
FYM / COMPOST
BIOMASS
BIOCHAR
BIOCHARCULTURE
SOIL AMENDMENT
INCREASED PRODUCTION
SOIL TEMPERATURE REGULATED
MOISTURE RETENTION
WATER CONSERVATI
ON
NITROGEN / PHOSPHORO
US RETENTION
NURSERIES
PESTICIDES ADBSORBTIO
N
SOIL MICROBES DENSITY
INCREASE
BIOCHAR COMPOST
EARTHWORMS INCREASE
TERMITES & ANTS
REPULSION
CARBON SEQUESTRATI
ON
ADVANTAGES OF BIOCHAR URBAN GARDENSLess weight and insulation to the rooftops
Economic savings through access to self grown food
Utilization of urban organic waste for biochar compost.
Aesthetics and green spaces on rooftops
FLOATS (THERMOCOL / PLASTICS)
BIOCHAR + (MEDIA FOR GROWTH)
FLOATIGATION ON CANAL / DRAINAGE FOR CROPS
PADDY
FLOATIGATION ON CANALS / DRAIANGE FOR CROPS
SUNLIGHT GREEN HOUSE EFFECT(SALT WATER EVAPORATES INTO FRESH WATER)
SEA WATER / BRACKISH WATER / POLLUTED WATER / FLOOD WATER
FRESH WATER (FLOWS INTO BIOCHAR)
RAIN WATER
© DR. N. SAI BHASKAR REDDY
FLOATIGATION
DROUGHT TOLERANT GARDENS
LOW WATER REQUIREMENT, PERENIAL GREENARY, AESTHETICS, ADAPTATION, SOLAR RADIATION,
MAINTENANCE FREE