AJPS  Vol.5 No.11 , May 2014
Cultivation of Erianthus and Napier Grass at an Abandoned Mine in Lampung, Indonesia
Abstract: The production of cellulosic bioethanol from non-edible plants is drawing increasing attention, as it potentially avoids food-fuel competition. Because growing such plants on farmland indirectly reduces food availability, the plants should be grown on marginal, non-arable lands. In this study, we evaluated the growth of cellulosic energy crops at a former mining site in Indonesia. This mine was abandoned because it contained few mineral deposits, and exposed subsoils rather than toxic soils prevented revegetation. In the first trial, growths of two energy plant species Erianthus spp. and Napier grass (Pennisetum purpureum) were compared with that of maize (Zea mays) at the mine site and a nearby degraded farm. Erianthus and Napier grass produced 11.7 and 22.5 t·ha-1 of shoot dry matter at 8 months after planting (MAP) in the farm respectively while maize plants failed to establish, but none of the three species grew at the mine. In the second trial, two-week-old seedlings of Erianthus and Napier grass rather than stem cuttings as used in the first trial were planted at the mine site. Erianthus and Napier grass produced 16.3 and 24.0 t·ha-1 of shoot dry matter over the course of 18 months, respectively. Application of organic fertilizer significantly increased shoot dry matter to 18.9 and 39.6 t·ha-1 in Erianthus and Napier grass, respectively. During the 18-month growth period, both of the energy plants significantly increased soil carbon at the 0 - 0.3 m depth from 0.33% to 1.15% - 1.23% when chemical fertilizer was applied and to 0.67% - 0.69% when both chemical and organic fertilizers were applied. From 0 - 5 MAP, soil surface level dropped by 28.0 - 34.7 mm in plots without plants due to soil erosion. In contrast, both of the energy plants significantly reduced the drop of soil surface level to 16.0 - 19.3 mm in plots with chemical fertilizer alone and to 18.0 - 20.7 mm in plots with chemical and organic fertilizers. Proportions of small soil particles, that would be easily detached and transported by water flow compared with large particles, were larger in the planted plots than the no-plant plots at 16 MAP. The results suggest that successful cultivation of energy plants on abandoned mine sites is possible, particularly if seedlings are transplanted and the crops are fertilized with organic fertilizer. In addition, the cultivation of Erianthus and Napier grass has positive impacts on soil quality that may contribute to their sustainability as crops and to the conservation of the local ecosystem.
Cite this paper: Sekiya, N. , Abe, J. , Shiotsu, F. and Morita, S. (2014) Cultivation of Erianthus and Napier Grass at an Abandoned Mine in Lampung, Indonesia. American Journal of Plant Sciences, 5, 1711-1720. doi: 10.4236/ajps.2014.511186.

[1]   Boddiger, D. (2007) Boosting Biofuel Crops Could Threaten Food Security. Lancet, 370, 923-924.

[2]   Hattori, T. and Morita, S. (2010) Energy Crops for Sustainable Bioethanol Production; Which, Where and How? Plant Production Science, 13, 221-234.

[3]   Gelfand, I., Sahajpal, R., Zhang, X., Izaurralde, R.C., Gross, K.L. and Robertson, G.P. (2013) Sustainable Bioenergy Production from Marginal Lands in the US Midwest. Nature, 493, 514-517.

[4]   Field, C.B., Campbell, J.E. and Lobell, D.B. (2008) Biomass Energy: The Scale of the Potential Resource. Trends in Ecology & Evolution, 23, 65-72.

[5]   Campbell, J.E., Lobell, D.B., Genova, R.C. and Field, C.B. (2008) The Global Potential of Bioenergy on Abandoned Agriculture Lands. Environmental Science & Technology, 42, 5791-5794.

[6]   Cai, X., Zhang, X. and Wang, D. (2011) Land Availability for Biofuel Production. Environmental Science & Technology, 45, 334-339.

[7]   Nijsen, M., Smeets, E., Stehfest, E. and Van Vuuren, D.P. (2012) An Evaluation of the Global Potential of Bioenergy Production on Degraded Lands. GCB Bioenergy, 4, 130-147.

[8]   Tilman, D., Hill, J. and Lehman, C. (2006) Carbon-Negative Biofuels from Low-Input High-Diversity Grassland Biomass. Science, 31, 1598-1600.

[9]   Varvel, G.E., Vogel, K.P., Mitchell, R.B., Follett, R.F. and Kimble, J.M. (2008) Comparison of Corn and Switchgrass on Marginal Soils for Bioenergy. Biomass and Bioenergy, 32, 18-21.

[10]   Schmer, M.R., Vogel, K.P., Mitchell, R.B. and Perrin, R.K. (2008) Net Energy of Cellulosic Ethanol from Switchgrass. Proceedings of National Academy of Sciences of the United States of America, 105, 464-469.

[11]   Fargione, J., Hill, J., Tilman, D., Polasky, S. and Hawthorne, P. (2008) Land Clearing and the Biofuel Carbon Debt. Science, 319, 1235-1238.

[12]   Smith, S.L., Thelen, K.D. and MacDonald, S.J. (2013) Yield and Quality Analyses of Bioenergy Crops Grown on a Regulatory Brownfield. Biomass and Bioenergy, 49, 123-130.

[13]   Matsumoto, N., Sano, D. and Elder, M. (2009) Biofuel Initiatives in Japan: Strategies, Policies, and Future Potential. Applied Energy, 86, S69-S76.

[14]   Koizumi, T. (2013) Biofuel and Food Security in China and Japan. Renewable and Sustainable Energy Reviews, 21, 102-109.

[15]   NEDO (New Energy and Industrial Technology Development Organization) (2013)

[16]   Koizumi, T. (2011) The Japanese Biofuel Program—Developments and Perspectives. Journal of Cleaner Production, 40, 57-61.

[17]   Sekiya, N., Hattori, T., Shiotsu, F., Abe, J. and Morita, S. (2014) Identifying Potential Field Sites for Production of Cellulosic Energy Plants in Asia. International Journal of Agricultural and Biological Engineering, accepted.

[18]   McMahon, G., Subdibjo, E.R., Aden, J., Bouzaher, A., Dore, G. and Kunanayagam, R. (2000) Mining and the Environment in Indonesia: Long-Term Trends and Repercussions of the Asian Economic Crisis. East Asia Environment and Social Development Unit, The World Bank, Washington DC.

[19]   Aspinall, C. (2001) Small-Scale Mining in Indonesia. International Institute for Environment and Development, London.

[20]   Prasetyo, B., Krisnayanti, B.D., Utomo, W.H. and Anderson, C.W.N. (2010) Rehabilitation of Artisanal Mining Gold Land in West Lombok, Indonesia: 2. Arbuscular mycorrhiza Status of Tailings and Surrounding Soils. Journal of Agricultural Science, 2, 202-209.

[21]   Hattori, T., Shiotsu, F., Doi, T. and Morita, S. (2010) Suppression of Tillering in Erianthus ravennae (L.) Beauv. Due to Drought Stress at Establishment. Plant Production Science, 13, 252-255.

[22]   Ra, K., Shiotsu, F., Abe, J. and Morita, S. (2012) Biomass Yield and Nitrogen Use Efficiency of Cellulosic Energy Crops for Ethanol Production. Biomass and Bioenergy, 37, 330-334.

[23]   Fauzi, A.I., Agus, F. and Sukarman, N.K. (2011) Characterizing the Soil for Improved Nutrient Management in Selected Maize Growing Areas of Indonesia. Indonesian Journal of Agricultural Sciences, 12, 17-32.

[24]   Morgan, R.P.C. (2009) Soil Erosion and Conservation. John Wiley & Sons, Hoboken.

[25]   Cruse, R.M., Cruse, M.J. and Reicosky, D.C. (2010) Soil Quality Impacts of Residue Removal for Biofuel Feedstock. In: Lal, R. and Stewart, B.A., Eds., Soil Quality and Biofuel Production, CRC Press, Boca Raton, 45-62.

[26]   Galdos, M.V., Cerri, C.C., Bernoux, M. and Cerri, C.E.P. (2010) Ethanol Production from Sugarcane and Soil Quality. In: Lal, R. and Stewart, B.A., Eds., Soil Quality and Biofuel Production, CRC Press, Boca Raton, 137-150.

[27]   Lemus, R. and Lal, R. (2005) Bioenergy Crops and Carbon Sequestration. Critical Reviews in Plant Sciences, 24, 1-21.

[28]   Ma, Z., Wood, C.W. and Bransby, D.I. (2000) Soil Management Impacts on Soil Carbon Sequestration by Switchgrass. Biomass and Bioenergy, 18, 469-477.

[29]   Ma, Z., Wood, C.W. and Bransby, D.I. (2000) Impacts of Soil Management on Root Characteristics of Switchgrass. Biomass and Bioenergy, 18, 105-112.

[30]   Sekiya, N., Shiotsu, F., Abe, J. and Morita, S. (2013) Distribution and Quantity of Root Systems of Field-Grown Erianthus and Napier Grass. American Journal of Plant Sciences, 4, 16-22.

[31]   Reubens, B., Poesen, J., Danjon, F, Geudens, G. and Muys, B. (2007) The Role of Fine and Coarse Roots in Shallow Slope Stability and Soil Erosion Control with a Focus on Root System Architecture: A Review. Trees, 21, 385-402.