Incorporating Environmental Externalities in Total Factor Productivity Analysis: The Case of Soil Erosion in Nigerian Agriculture

Chuku, Chuku (2015): Incorporating Environmental Externalities in Total Factor Productivity Analysis: The Case of Soil Erosion in Nigerian Agriculture.

Abstract

In this study, we argue that conventional methods of measuring agricultural productivity which only uses information about marketed inputs and outputs does not give a true representation of how sustainable the activities of the sector are. Motivated by the Solow-type growth accounting framework, we use the Tornqvist index formula to construct input, output and TFP indices for Nigerian agriculture between 1980 and 2010. We account for environmental externalities by incorporating off-farm damage costs of soil erosion based on different assumptions about possible scenarios of the extent and trajectory of damage costs. The results show that when externalities are not accounted for, productivity in the Nigerian agricultural sector is overestimated. This conclusion is robust to the different assumptions about damage cost scenarios made. The implication is that reducing off-farm erosion damages through improved soil conservation practices will significantly improve productivity and sustainability in the Nigerian agriculture sector.

• Item Type: MPRA Paper
• Language: English
• Keywords: Tornqvist TFP, environmental externalities, soil erosion, USLE
• Subjects: D - Microeconomics > D2 - Production and Organizations > D24 - Production ; Cost ; Capital ; Capital, Total Factor, and Multifactor Productivity ; Capacity; O - Economic Development, Innovation, Technological Change, and Growth > O1 - Economic Development > O13 - Agriculture ; Natural Resources ; Energy ; Environment ; Other Primary Products; Q - Agricultural and Natural Resource Economics ; Environmental and Ecological Economics > Q1 - Agriculture > Q16 - R&D ; Agricultural Technology ; Biofuels ; Agricultural Extension Services

References

Adeyemo, R., Oke, J. T. O., and Akinola, A. A. (2010). Economic efficiency of small scale farmers in Ogun State, Nigeria. Tropicultura, 28(2), 84-88.

Ali, M., Byerlee, D., (2002). Productivity growth and resource degradation in Pakistan’s Punjab: a decomposition analysis. Economic Development and Cultural Change, 839-863.

Alfsen, K. H., De Franco, M. A., Glomsr¸ S., and Johnsen, T. (1996). The cost of soil erosion in Nicaragua. Ecological Economics, 16(2), 129-145.

Amaza, P. S. and Maurice, D. (2005). Identification of factors that influence technical efficiency in rice based production systems in Nigeria. Paper presented at workshop on policies and strategies for promoting rice production and food security in Sub-Saharan Africa in Cotonou, Benin.

American Society of Agronomy (1989). Decision reached on sustainable agriculture. Agronomy News. January, pg 15, Madison, Wisconsin.

Amos, T., Chikwendu, O., and Nmadu, J., (2004). Productivity, technical efficiency and cropping patterns in the savanna zone of Nigeria. Journal of Food Agriculture and Environment. 2: 173-176.

Asmild M, and Hougaard J. (2006). Economic and environmental efficiency of Danish pig farms. Agricultural Economics 35:171-181.

Avila, A. F., and Evenson, R. E. (2010). Total factor productivity growth in agriculture: the role of technological capital. Handbook of Agricultural Economics, 4, 3769-3822.

Ball, V., Lovell, C., Luu, H., and Nehring, R. (2004). Incorporating environmental impacts in the measurement of agricultural productivity growth. Journal of Agricultural and Resource Economics, 19 (3); 436-460.

Bishop, J., and Allen, J. (1989). The on-site costs of soil erosion in Mali. World Bank, Policy Planning and Research Staff, Environment Department.

Brown, Christopher (2003). Global Forests Product Outlook Study. Working Paper No. GFPOS/WP/03, FAO

Breustedt, Gunnar and Hendrik Habermann (2008). Determinants of agricultural cash rents: Empirical insights from farms in lower Saxony. Paper presented in IAMO Forum, Halle (Saale), Germany, June 25-27, 2008.

Byerlee, D., and Murgai, R. (2001). Sense and sustainability revisited: the limits of total factor productivity measures of sustainable agricultural systems. Agricultural Economics, 26(3), 227-236.

Caves, D.W., Christensen, L.R., Diewert, W.E., (1982). The economic theory of index numbers and the measurement of input, output and productivity. Econometrica 50, 1393-1414.

Christainsen GB, Haveman RH (1981). The contribution of environmental regulations to the slowdown in economic growth. Journal of Environmental Economic Management, 8:381-390

Clark, C., (1940). The Conditions of Economic Progress. McMillan, London.

Clark II, E.H., Haverkamp, J.A., and W. Chapman. (1985). Eroding soils: The off-farm impacts. Washington, DC: The Conservation Foundation.

Coelli, T., Lauwers, G., Huylenbroeck, V. (2007). Environmental efficiency measurement and the materials balance condition. Journal of Productivity Analysis 28; 3-12.

Coelli, T.J., Rao, D.S.P., (2001). Implicit Value Shares in Malmquist TFP Index Numbers. CEPA Working Papers, No. 4/2001, School of Economics, University of New England, Armidale, Australia.

Coelli, T.J., Rao, D.S.P., (2005). Total factor productivity growth in agriculture: A Malmquist Index analysis of 93 countries, 1980-2000. Agricultural Economics, 32, 115-134.

Coelli, T.J., Rao, D.S.P., O’Donnell, C.J., Battese, G.E., (2005). An Introduction to Efficiency and Productivity Analysis, Second Edition. Springer, Heidelberg, Germany

Coelli, T.J., Rungasuriyawiboon, S., Rao, D.S.P., (2004). Sensitivity of the Malmquist Productivity Index to the Choice of Methodology: An Application to World Agriculture. Mimeograph, Centre for Efficiency and Productivity Analysis, School of Economics, The University of Queensland, Brisbane, Australia.

Cohen, M. J., Brown, M. T., and Shepherd, K. D. (2006). Estimating the environmental costs of soil erosion at multiple scales in Kenya using emergy synthesis. Agriculture, Ecosystems and Environment, 114(2), 249-269.

Elwell, H.A and Stocking, M.A (1982). Developing a simple yet practical method of soil loss estimation. Tropical Agriculture, 59: 43-48

Far ̂e R, Grosskopf S, and Pasurka C (1989). The effect of environmental regulations on the efficiency of electric utilities: 1969 versus 1975. Applied Economics 21:225-235.

Fox, G. and Dickson, E.J., (1988). What’s economic about the economic cost of soil erosion to Canadian farmers? Discussion Paper DP88/3, Department of Agricultural Economics and Business, University of Guelph, Guelph, Ontario

Fuglie, K. (2010). Sources of growth in Indonesian agriculture." Journal of Productivity Analysis 33, 3, 225-240.

Fuglie, K. (2011). Agricultural productivity in sub-Saharan Africa. In: Lee, D. (ed.) The Food and Financial Crisis in Africa. CAB International, Wallingford, UK, pp. 122-153.

Fasoranti, M. (2006). A Stochastic Frontier Analysis of Effectiveness Of Cassava-Based Cropping Systems In Ondo State, Nigeria.� Phd Thesis, Department of Agricultural Economics and Extension, FUTA, Akure

FDALR, (2009). Assesment of soil degradation in Nigeria. Federal Department of Agriculture and Land Resources, Final Report 1. Available at http://www.nateko.lu.se/Courses/NGEA09/UM%20Cases/Assessment%20of%20Soil%20Degradation%20in%20Nigeria.pdf

Grimm, Mirco Robert J.A. Jones, Ezio Rusco and Luca Montanarella (2003). Soil Erosion Risk in Italy: a revised USLE approach. European Soil Bureau Research Report No.11, EUR 20677 EN, (2002), 28pp. Office for Official Publications of the European Communities, Luxembourg.

Hailu, A., Veeman, T.S., (2001). Non-parametric productivity analysis with undesirable outputs: an application to the Canadian Pulp and Paper Industry. American Journal of Agricultural Economics 83, 605-616.

Hansen, L., and Ribaudo, M. O. (2008). Economic measures of soil conservation benefits: Regional values for policy assessment. Resource and Rural Economics Division, Economic Research Service, U.S. Department of Agriculture, Technical Bulletin TB- 1922.

Hayami, Y., (1969). Industrialization and agricultural productivity. Development Economics 7, 3-21.

Hayami, Y., Inagi, K., (1969). International comparisons of agricultural productivity. Farm Economics. 11, 407-419

Headey, D., Alauddin, M., & Rao, D. (2010). Explaining agricultural productivity growth: an international perspective. Agricultural Economics, 41, 1-14.

Hoang, V., Coelli, T. (2011). Measurement of agricultural total factor productivity growth incorporating environmental factors: A nutrient based approach. Journal of Environmental Economics and Management 62, 462- 74

Lal, R. (1983). Soil erosion and its relation to productivity in tropical soils. In El-Sawaify, Moldenhauer and Lo (Eds.) Soil Conservation Society of America Ankey: Iowa.

Lal, R. (1987). Effects of soil erosion in crop productivity CRC Critical Reviews in Plant Sciences 5(4): 303-367.

Lal, R. (1994). Soil erosion problems on alfisols in Western Nigeria VI: effects of erosion on experimental plots Geoderma 25: 215-130.

Lal, R. (1990). Soil erosion on alfisols in Western Nigeria. IV. Nutrient elements losses in runoff and eroded sediments. Geoderma 16, 403-417.

Liverpool-Tasie, L., Kuku, O., and Ajibola, A., (2011). A Review of Literature on Agricultural Productivity, Social Capital and Food Security in Nigeria. NSSP Working Paper 21, IFPRI.

Lynam, J.K. and Herdt, R.W. (1989). Sense and sustainability: sustainability as an objective in international agricultural research. Agricultural Economic 3, 381-398.

Nanere, M., Fraser, I., Quazi, A., and D;Souza, C. (2007). Environmentally adjusted productivity measurement: an Australian case study, 85, 350-362.

Onyenweaku, C. and Ohajianya, D. (2009). Technical Efficiency of Rice Farmers in Ebonyi State, Nigeria. Journal of Agriculture and Food Sciences 3 (2): 175-184.

Otitoju, M. and Arene, C. (2010). Constraints and Determinants of Technical Efficiency in Medium-Scale Soybean Production in Benue State, Nigeria. African Journal of Agricultural Research 5(17): 2276-2280

Pashigian, B.P (1984). The effect of environmental regulation on optimal plant size and factor shares. Journal of Law and Economics, 27:1-28.

Parcon, H., Arita, S., Loke, M., and Leung, P. (2011). A comparison of agricultural input prices: Hawaii vs. its major export competitors. Economic Issues, 20.

Pimentel, D., Harvey, C., Resosudarmo, K., Sinclair, D., Kurz, M., McNair, S., Crist, L., Shpritx, L., Fitton, R., and Saffouri, R., (1995). Environmental and economic costs of soil erosion and conservation benefits. Science, New Science, 267 (5201), 1117-1123

Piot-Lepetit I, Vermersch D, and Weaver RD (1997). Agricultural environmental externalities: DEA evidence for French agriculture. Applied Economics 29:331-338

Pittman, R.W (1983). Multilateral productivity comparisons with undesirable outputs. Economic Journal 93:883-891.

Reinhard S, and Thijssen G (2000). Nitrogen efficiency of Dutch dairy farms: a shadow cost system approach. European Review of Agricultural Economics 27:167-186

Ribaudo, M.O. (1989). Water quality benefits from the conservation reserve program. Agricultural Economic Report No. 606, Resourcesand Technology Division, Economic Research Service, USDA,Washington, DC.

Ribaudo, M.O. (1986). Reducing soil erosion: Offsite benefits. AER- 561. U.S. Department of Agriculture, Economic Research Service.

Roose, E. J. (1977). Use of the universal soil loss equation to predict erosion in West Africa. In Soil Erosion: Prediction and Control, Proceedings of the National Conference on Soil Erosion (pp. 143-151).

Schlapfer, F., (2006). Survey protocol and income effects in the contingentvaluation of public goods: a meta-analysis. Ecological Economics 57,415-429

Shaik S, Helmers G.A, and Langemeier M.R (2002). Direct and indirect shadow price and cost estimates of nitrogen pollution abatement. Journal of Agricultural Resource Econonomics 27:420-432.

Shephard, R.W., (1970). Theory of Cost and Production Functions. Princeton University Press, Princeton, NJ.

Solow, R. (1957). Technical change and the aggregate production function. Review of Economic Statistics,. 39, 312-320.

Tanko, L. and Jirgi, A. (2008). Economic efficiency among small holder arable crop farmers in Kebbi State, Nigeria. Continental Journal of Agricultural Economics 2. 21-56.

World Bank. (1990). Towards The Development of An Environmental Action Plan for Nigeria, West Africa Department

World Bank (1999). Global approach to environmental analyses (GAEA), World Bank, Washington DC, United States of America.