Growth Characteristics Important for Field Establishment of Giant ...

ms.biomass.org

Growth Characteristics Important for Field Establishment of Giant ...

Growth Characteristics

Important for Field

Establishment of Giant

Miscanthus

Brian S. Baldwin & Kyle B. Holmberg

Dept. of Plant & Soil Sciences

Mississippi State University


Biomass as Energy

• Generation of energy from biomass grown

on marginal agricultural land

• CO 2 neutral energy source

• Alternative non-food use for land

• Environmental benefits


Lignocellulosic Fermentation &

Thermochemical Conversion

Fermentation

of Ribose & Hexose

Ethanol

Distillation

Cellulose

Hydrolysis

Un-digested

Lignin

Pre-treatment

Lignocellulosic

Biomass

Thermochemical

Conversion

Energy

Fuels & Chemicals

(BioOil and Syngas)

From NREL


Giant Miscanthus vs Switchgrass


Miscanthus vs. Switchgrass

• Native to Asia, introduced

to North America

• Good yields in Southeast

• Seed sterile

• Must be transplanted

from rhizomes

• Native to North America

• Good yields in Southeast

• Seeded

• Exceedingly slow to

establish

• Slow to establish from

clones


Switchgrass


Giant Miscanthus


Giant Miscanthus

• Miscanthus floridulus = Miscanthus

sinensis Giganteus

cv 2X

• Rhizomatous, herbaceous perennial grass

• C4 photosynthesis

• 2n=3x=57 = sterile

• Multiplication is by plant

division


• Miscanthus identified a a perennial crop

with high biomass potential – 11-17 17 t/A/yr

• Height of 9-129

ft

• Stems are erect similar to thin bamboo


Emily Heaton U.Ill.


Previous and Current Work

• U. Illinois – Champaign Urbana (22-60

Mg/ha/yr

Hornum, , Denmark (8-10 Mg/ha 2 nd yr; 20-30

Mg/ha 3 rd yr on.)

Steinebrunn Germany (17 Mg/ha)


Propagule:

A crown division


Propagule:

Primary rhizome

Secondary rhizome

Axillary buds


Rate of Giant Miscanthus Crown

Crown Age

(Months)

Expansion due to Age

Mean Crown

Diameter

(ft)

Mean Number

Culms/Crown

12 3.06 26.6

24 4.08 51.8

36 5.08 74.2

48 5.53 300.1


Yield comparison of Giant Miscanthus

and Switchgrass due to Age

25

20

Yield (T/A)

15

10

5

Misfo 3sp

Misfo 10sp

Panvi 3sp

Panvi 10sp

0

Year 1 Year 2 Year 3 Year 4

Years after planting


Energy Considerations

Gross Heat

Net Energy

Miscanthus

floridulus

Switchgrass

18.5 GJ/Mg 18.3 GJ/Mg

4150 cal/g 4170cal/g

Moisture 12% 12%

Ash 1.5 - 4.5% 4.5 – 5.2%

Sulfur 0.1% 0.12%


• Must be established from

rhizomes

Establishment

• A 4-yr 4

old plant in a

mother plant nursery can

produce 1650 propagules

• Propagules may have

multiple active nodes

• 4840 rhizome pieces/acre

needed


Standability


Winter Persistence


Previous and Current Work

• U. Illinois – Champaign Urbana (22-60

Mg/ha/yr

Hornum, , Denmark (8-10 Mg/ha 2 nd yr; 20-30

t/ha 3 rd yr on.)

Steinebrunn, , Germany (17 Mg/ha)


Questions?

More magazines by this user
Similar magazines