Jatropha Curcas Oil: From Potential to Kinetic EnergyRoy
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Jatropha curcasFrom Potential to Kinetic Energy
Roy BeckfordUniversity of Florida, IFAS,
Lee County, Florida239-533-7512
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In the beginning there was biodiesel…
• “The use of Vegetable oils (Bio Diesel) for engines may seem insignificant today. But such oils may become in course of time as important as Petroleum and Coal tar products of the present time" -Rudolf Diesel, 1912
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History of Jatropha curcas (Jc)
• Used by indigenous peoples in the Caribbean and Latin America
• Used for medicine (internal and external) and food (seed for snack; leaves cooked with meats)
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History of Jatropha curcas (Jc)• Intercropped with corn
in Haiti• Leaves used in religious
rituals• Seeds are crushed in a
mortar and pestle and boiled to release oil
• This culture has been practiced for more than 200 years
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Making Connections• Edison studied
Jatropha curcas plant to
determine its potential for
producing rubber
Thomas Edison1847 - 1931
Jatropha tree at Edison House, Fort Myers, Fl.
Planted in 1929
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• Potential energy is energy that is stored in an object.
• Kinetic energy is energy of motion.
• Potential and kinetic energy are energy partners.
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The State of Jatropha Energy
Global Exchange for Social Investment
GEXSI…Conducted he first worldwide study assessing the current status of Jatropha projects.
The project was conducted on behalf of the WWF, providing input for the Roundtable on Sustainable Biofuels.
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The State of Jatropha EnergyHectares under production
GEXSI interviewed 170 experts in 55 countries and collected 160 online questionnaires to create the first online inventory
of Jatropha projects
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The State of Jatropha Energy
• The largest Jatropha projects are government initiatives that typically work with smallholder farmers in Asia and Africa.
• The biggest private companies in the field regarding planted acreages are:
- D1-BP Fuel Crops (Asia and Africa)- Mission Biofuels (Asia)- Sunbiofuels (Ethiopia, Tanzania, Mozambique)- GEM Biofuels (Madagascar)
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The State of Jatropha Energy
• Major oil companies (e.g. in China) are devising their market entry.
• This suggests that the industry structure will change dramatically in the next few years with large (multi-)national energy and oil companies entering the field.
• What are the implications for smaller established farmers/investors?
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Shifting Gears…Moving from ‘Potential’ to ‘Kinetic’
2008
2015
2008 2015
PRODUCTION
PRODUCTIVITY
900,000 hectares
13,000,000 hectares
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What is Driving ‘Production’Production is driven by climbing crude oil prices and the quest for larger volumes of alternative and sustainable feedstock.
• We are at the dawn of the bio-dieselization of American farms and industry
• Jatropha shows significant promise, even as it remains largely scientifically unexploited, and thus a largely undomesticated crop
• It originated in the Americas, making it suitable for regional attention
• Its on everyone’s top 10 list of biodiesel crops
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Current Oil Yield Patterns
• Studies conducted by IPGRI, CGIAR, University of Hohenheim Stuttgart, indicate an average seed yield per shrub of 15 kilograms or 33 pounds.
• Collections by this author from various shrubs grown as ornamentals, indicate a range of 25 to 42 pounds of seeds per shrub per year.
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Current Oil Yield Patterns
Known values for ‘undomesticated’ Jatropha:• 1 gallon of Jatropha oil weighs 7.7 lbs
• Specific gravity of curcas oil = .9186• Seeds equal 70% of fruit weight• 35%-38% seed oil content occurs regularly• In the areas of origin, Jatropha plants reach
maturity at three years and will continue to yield optimally for 30 or more years.
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Current Oil Yield Patterns
Doing the math (Data from 1 four year old shrub chosen at random)
• Shrub yield (fruit) = 60 lbs• Seed yield (after hulling) = 42 lbs• Seed oil content = 35% (of seed weight)• .35 X 42 = 14.7 lbs of oil• 1 gallon of curcas oil weighs 7.7 lbs• 14.7 7.7 = 1.9 gallons
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Jatropha yield projections
Year Yield per shrub (lbs)
Pounds % oil Wt. of oil
Gallons of oil
Estimated price of oil (unit)
Estimated value of oil (total)*
1 5 3200 36 1,152 149.6 $3.50 $523.60
2 10 6400 36 2,304 299.2 $3.50 $1047.20
3 20 12,800 36 4,608 598.4 $3.50 $2,094.40
Forecasted yield per acre (# of seedlings/acre = 640)
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Jatropha yield projections
Year Yield per shrub (lbs)
Pounds % oil Wt. of oil Gallons of oil
Estimated price of oil (unit)
Estimated value of oil (total)*
3 40 25,600 38 9,728 1,263.37 $3.50 $4,421.79
Best case (ideal) scenario at year 3; yield per acre
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Shifting to Higher Gear…Moving into ‘Kinetic’ Phase
2008
2015
2008 2015
PRODUCTION
PRODUCTIVITY
900,000 hectares
13,000,000 hectares
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Productivity…The Soybean Example
• Average yield of soy per decade indicates that the yields increased from 14 bushels per acre in the 1920s to 43 bushels per acre in the 1990s, a threefold increase.
• Continued yield improvements can be expected in the future as new pest-resistant varieties are released and management is fine-tuned.IOWA STATE UNIVERSITY - Iowa Agricultural Statistics.
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Making the case for R&D…The Soybean Example
• Transgenic soybeans are the result of incorporating a foreign gene into the DNA of the soybean plant.
• The most popular example currently of a transgenic soybean Roundup Ready soybeans which were planted on an estimated 70 percentof North Dakota soybean acres in 2003.
North Dakota State University Agriculture and University Extension
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Production to Productivity Challenges
• Dealing with the variable yields and needs of Jatropha plants across regions of production
• Matching the right ‘variety’ of Jatropha to the right region of in which it will be produced
• Productivity variables include site specific nutrient availability and plant needs, water requirements, fruit and seed oil yields, fruiting periods, susceptibility to local pests and endemic diseases
• Variables need to be tackled in order to stimulate and maintain high levels of productivity in the future
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What Will Drive Crop ‘Productivity’
• Provide optimum growing conditions (BMP’s)• Pruning is essential (Manual or Mechanical)• Flowering and pollination improvements• Identification of distinct varieties (existing)• R&D for high yielding cultivars/hybrids (high fruit
bearing)• R&D for increase in seed oil content• R&D for cold tolerance• Older fields will benefit from high yield
genotypes (budding/grafting experiments)
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A summary of objectives and findings on Jatropha curcas production in Florida.
• To determine drought tolerance of the species• To assess the impact of flooding and frost on the species
ability to survive in Florida• To document the occurrence of non-introduced pests and
diseases on the plants• To evaluate the effect of pruning on flowering, and on fruiting
yields• To estimate preliminary oil yields in South Florida conditions• To provide an open and interactive environment of information
exchange with farmers• To provide UF/IFAS scientific disciplines with empirical data
collected from the project to inform ongoing research and development work.
Roy Beckford/Martha C. Avila and Collaborators
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Optimum Growing Conditions
• Soil pH (6.8 – 8.0 tolerated)• 24 inches of rain or irrigation equivalent• Provision of organic nutrients• Spacing (dependent on soil nutrients)• Integrated Pest Management (IPM)• Avoid extended flooding (> 2 days) at all
costs!!
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Waterlogged Jatropha• Affected plants tested positive for phytopthora
root rot (after 3 days of standing water)
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Example of ‘Optimum’ Conditions
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Pruning – early spring/early fall
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Effects of Pruning
• Increases terminal branching
• Stimulates increased flowering
• Increase fruit yield by more than 25%
• Provides fruiting uniformity
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Flowering and Pollination• Honey bees provide excellent pollination of
Jatropha curcas (as observed in Florida)• Identifying the most proficient pollinators is a key
step toward productivity goals
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Pruning + Flowering + Pollination + = Fruit Uniformity
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Uniformity
Photo taken at 10 acre Jatropha farm belonging to Bryan Beer II, Labelle, Florida
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Uniformity aids Mechanical Harvesting
www.oxbocorp.com
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R&D for Higher Yielding Plants• Selection of plants from high yield sources (mother
trees)• Selection should aim at pest and disease resistant stock
R&D objectives will include: • Gene manipulation for higher and improved fruit yields
on individual shrubs, combined with higher oil content increases in seeds.
• Creating resistance to fungal diseases to which Jatropha curcas is currently susceptible.
• Improved tolerances or resistance to pests which feed on the plant and are disease pathogens.
• Development of plants that bear sterile seeds (controversial).
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Pests and Diseases Observed• Army worms• Aphids• Papaya mealy bug• Leaf spot/Leaf rust• Collar rot• Citrus root weevil
(Pachnaeus sp.)
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Damage from Citrus Root Weevil
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Collar Rot Disease
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Effect of Frost (before)
December 20/07 (Before Frost)
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Effect of Frost (after)
January 5/ 08 (Morning after second consecutive night of frost… 24 Degrees F)
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Effect of Frost (after)
January 19/08 – 2 weeks later
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Effect of Frost
May 15/08 (effects of January frost not noticeable)
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Effect of Frost (control plot)
• January 5, 2008; 8:30 AM
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Beginning of Rainy Season; July 2008 (control plot)
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Plants at 6ft Tall – February 09(control plot)
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Budding/Grafting Experiments• Jatropha curcas can be propagated
by seed as well as by vegetative means
• Vegetative propagation includes cuttings, grafting, budding and air layering techniques
• Existing fields will benefit from these techniques as a means of improving yield and productivity patterns
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Vegetative Propagation - Cuttings• Jatropha grows well from
cuttings• Trees from cuttings show a
lower longevity (IPGRI)• True taproots are not
developed, rather…• Pseudo taproots are formed
which grow to ½ the depth of true taproots
• Trees with pseudo taproots are more susceptible to drought and wind conditions**
**There is emerging evidence to debate this information
Seedling showing taproot
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Micro-plants ProductionVarious techniques are currently been used
• Clonal propagation is the fastest way to develop high-yielding varieties
CAVEATS!• Garbage in, garbage out• Results in cytoplasmic uniformity• Cytoplasmic uniformity presents
major pros and cons
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Utilization RoutesEnergy Routes• Curcas oil• Biodiesel (trans-esterification)• Biomass to bio-gas (methane)Non-energy Routes• Leaf litter compost• Biomass to organic fertilizer• Biomass to bio-char• Organic insect repellents• Medicinal glycerin
Nature.com
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Income Streams
1. Carbon Credits2. Intercropping (Peanut and Perennial peanut)3. Silviculture4. Jatropha Oil (video http://www.agoilpress.com/video.php?type=jatropha2)5. Seed6. Pressed Cake 7. Fruit Hulls (husks)8. Glycerin
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Global Exchange for Social Investment…findings
• Jatropha has not contributed to the destruction of primary forest according to GEXSI data sample, only 0.3% of any cultivated areas were previously primary forest, and 5% secondary forests.
• Political support for Jatropha is already strong, and developing further. Especially in Asia, governments have been the main driver for Jatropha cultivation and developed specific Jatropha programs.
• Rising crude oil prices are now creating a strong demand for biofuels, therefore, large oil and energy conglomerates are beginning to implement large-scale Jatropha projects.
•Global Market Study on Jatropha © GEXSI LLP 2008
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Global Exchange for Social Investment…findings
• Production is focused on domestic markets • Production for local markets is more important than
export, especially in Asia. • For domestic markets, the use of unrefined Jatropha oil
is seen as equally important as the trans-esterification into biodiesel.
• Jatropha is typically planted using semi-intensive methods
• Most Jatropha plantations have nurseries and apply cultivation techniques such as pruning or fertilization.
• About half of the projects use some type of irrigation.
•Global Market Study on Jatropha © GEXSI LLP 2008 15