Title: Establishment and Short-term Productivity of Annual and Perennial Bioenergy Crops across a Landscape Gradient

Journal: BioEnergy Research

Danielle M. Wilson1, Emily A. Heaton1*, Lisa A. Schulte2, Theodore P. Gunther1,3, Monika E. Shea2, Richard B. Hall2, William Landon Headlee2, Kenneth J. Moore1, and Nicholas N. Boersma1

1Department of Agronomy, Iowa State University, Ames, IA 50011, USA

2Department of Natural Resource Ecology & Management, Iowa State University, Ames, IA 50011, USA

3Iowa Soybean Association, 1255 SW Prairie Trail Pkwy, Ankeny, IA 50023, USA (Present address)

*Corresponding Author

Emily A. Heaton

Tel +1 515 294 1310

Fax +1 515 294 3163

Email:

Online Resource 6 Grain and biomass yields for 2009-2012 from the Landscape Biomass Project in Boone County, IA, USA. Means for grain and biomass yields were calculated from n = 3 biological blocks for each landscape position

Cropping system / 2009 / 2010 / 2011 / 2012
Landscape Positiona / Landscape Position / Landscape Position / Landscape Position
1 / 2 / 3 / 4 / 5 / 1 / 2 / 3 / 4 / 5 / 1 / 2 / 3 / 4 / 5 / 1 / 2 / 3 / 4 / 5
Mg ha-1 / Mg ha-1 / Mg ha-1 / Mg ha-1
1. Continuous maize
Maize grain / 10.6 / 11.2 / 9.8 / 11.8 / 13.2 / 6.5 / 8.6 / 6.3 / 7.4 / 9.6 / 7.6 / 8.9 / 6.5 / 8.6 / 10.7 / 4.3 / 4.8 / 4.0 / 5.4 / 6.2
Maize stover / 10.4 / 9.7 / 10.0 / 10.8 / 13.1 / 5.0 / 6.3 / 5.3 / 5.3 / 6.9 / 6.3 / 7.0 / 5.6 / 6.4 / 8.8 / 2.8 / 4.1 / 3.6 / 3.9 / 6.2
2. Modified rotation
Soybean grain / 3.8 / 3.4 / 3.4 / 3.6 / 3.9 / 2.6 / 2.6 / 2.4 / 2.7 / 0.9 / - / - / - / - / - / 2.8 / 3.0 / 2.3 / 2.6 / 2.1
Triticale biomass / - / - / - / - / - / 3.0 / 3.3 / 2.5 / 3.0 / 6.2 / - / - / - / - / - / - / - / - / - / -
Maize grain / - / - / - / - / - / - / - / - / - / 9.5 / 9.4 / 8.6 / 9.6 / 9.5 / - / - / - / - / -
Maize stover / - / - / - / - / - / - / - / - / - / 8.6 / 8.4 / 6.5 / 7.9 / 8.9 / - / - / - / - / -
3. Maize-switchgrass (KAN)
Maize grain / 9.8 / 9.6 / 8.4 / 8.1 / 11.4 / - / - / - / - / - / - / - / - / - / - / - / - / - / - / -
Maize stover / 8.5 / 7.8 / 7.9 / 7.0 / 10.1 / - / - / - / - / - / - / - / - / - / - / - / - / - / - / -
Switchgrass biomass / - / - / - / - / - / 3.6 / 4.2 / 3.0 / 3.3 / 5.0 / 8.2 / 8.6 / 8.8 / 8.1 / 8.1 / 11.1 / 8.2 / 11.4 / 8.5 / 11.3
3. Maize-switchgrass (CIR)
Maize grain / 9.8 / 9.6 / 8.4 / 8.1 / 11.4 / - / - / - / - / - / - / - / - / - / - / - / - / - / - / -
Maize stover / 8.5 / 7.8 / 7.9 / 7.0 / 10.1 / - / - / - / - / - / - / - / - / - / - / - / - / - / - / -
Switchgrass biomass / - / - / - / - / - / 2.2 / 2.3 / 2.2 / 2.8 / 4.2 / 6.6 / 8.2 / 6.7 / 6.8 / 6.8 / 5.1 / 7.5 / 7.3 / 5.5 / 8.2
4. Triticale/Sorghum
Triticale biomass / 2.2 / 1.9 / 1.4 / 1.7 / 2.0 / 2.8 / 3.6 / 2.9 / 3.0 / 5.9 / 1.2 / 1.9 / 1.7 / 2.1 / 3.2 / 5.9 / 6.7 / 5.8 / 5.7 / 11.9
Sorghum 'Sugar T' biomass / 12.0 / 13.1 / 7.5 / 10.0 / 7.5 / 13.0 / 13.3 / 12.9 / 10.1 / 11.8 / - / - / - / - / - / - / - / - / - / -
Sorghum 'TX09024' biomass / 9.2 / 9.8 / 8.0 / 8.8 / 8.8 / 10.5 / 9.6 / 8.7 / 9.9 / 9.8 / - / - / - / - / - / - / - / - / - / -
Sorghum 'M-81E' biomass / - / - / - / - / - / - / - / - / - / - / 9.5 / 10.4 / 8.2 / 9.4 / 10.1 / 3.1 / 3.3 / 3.6 / 3.1 / 4.5
5. Triticale-Aspen
Triticale biomass / 4.1 / 3.7 / 2.5 / 3.7 / 4.9 / 3.0 / 3.7 / 2.8 / 4.0 / 3.6 / 0.4 / 0.6 / 0.5 / 1.8 / 3.0 / - / - / - / - / -
Aspen biomass / - / - / - / - / - / - / - / - / - / - / - / - / - / - / - / 1.8 / 2.3 / 1.7 / 5.4 / 3.1

aLandscape Position= 1: Summit, 2: Shoulder, 3: Back slope, 4: Toe slope, 5: Floodplain