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Mississippi Feedstocks Research Brian Baldwin Dept. of Plant and Soil Science Focus Crops Dry Harvested, truly deciduous Switchgrass Giant miscanthus (Mxg) – yields are twice swtg Wet harvested Sweet sorghum (sugar and bagasse) Energycane (some sugar and whole stalk)

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Mississippi Feedstocks Research


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slide1

Mississippi Feedstocks Research

Brian Baldwin

Dept. of Plant and Soil Science

focus crops
Focus Crops
  • Dry Harvested, truly deciduous
    • Switchgrass
    • Giant miscanthus (Mxg) – yields are twice swtg
  • Wet harvested
    • Sweet sorghum (sugar and bagasse)
    • Energycane (some sugar and whole stalk)
      • Inclusion of Mississippi cultivars
    • Napiergrass (elephantgrass) – de-emphasized
slide3

Switchgrass

7-10 T/A

Giant Miscanthus

18-20 T/A

slide6

Sweet sorghum

8-12 T/A

Naipergrass

0-19 T/A

Energycane

5-23 T/A

end of season harvest 2008
End of Season Harvest2008

Tonnage

Tons/A (front columns) Mg/ha (back columns)

slide8
Wood
  • Still the primary feedstock for existing and new EtOH and syngas plants
  • Can we provide grass between trees as they are regenerating (co-culture).
    • What are the potential effects on each crop?
    • What are the economics of the expected yield compromise?
establishment
Establishment
  • Like real estate, its all about three things
    • Establishment, establishment, establishment
  • Need herbicides that work for switchgrass
    • pre- especially
  • Need herbicides we can use in Mxg
slide10

Low Seed

Dormancy

Herbicide Resistance

Seed Safener

land resources
Land Resources
  • Land for biomass crops will NOT come from row crop land
    • Land will come from hill country where it can serve as a (soil) conservation incentive
land resources12
Land Resources
  • Land will come from CRP and pasture
    • What will be the method of conversion?
    • Can we convert from existing CRP and pasture land?
    • Develop establishment techniques to enable swtg proliferation in mixed stands
nutrient cycling lower inputs
Nutrient Cycling / Lower Inputs
  • Track N cycling in the plant
nutrient cycling lower inputs14
Nutrient Cycling / Lower Inputs
  • Associative dinitrogen fixation
    • Association of micro-organisms in and around the crop roots
nutrient cycling lower inputs15
Nutrient Cycling / Lower Inputs
  • Winter legumes (perennial or annual) as a source of nitrogen
    • Must be timed with harvest
nutrient cycling lower inputs16
Nutrient Cycling / Lower Inputs
  • Organics/carbon sequestration over time
use of by products
Use of By-products
  • Char
    • Syngas and biooil plants getting 250,000 lbs of feedstock a day will generate volumes of this.
      • Will application to soil affect nutrient availability?
      • Can we create terra preta nova ?
      • Will it be advantageous?
co ordination with feds
Co-ordination with Feds.
  • DoE and its derivatives (INL, NREL, ORNL)
    • Characterization of factors that affect quality of biomass
      • Weathering effects on structural carbohydrates
      • Fertilizer source (esp Cl- and SO4-2)
      • Soil type and luxury consumption of soil minerals
      • Species effects on structural carbohydrates
        • Cultivar (esp. Forestburg)
  • USDA (ARS and NRCS)