The Impact of Public Spending on Research and Development on Productivity in the Agricultural Sector in Sub-Saharan Africa
Keywords:
Public Agricultural Research, Development Spending, Agricultural Productivity, Growth, Sub-Saharan AfricaAbstract
This study examines public agricultural research and development spending on agricultural production growth in sub-Sahara Africa. The data used for the research were obtained from the United States Development of Agriculture (USDA), World Bank database and Agricultural Science and Technology Indicator (ASTI). The objectives of the study include the following; 1) to assess the impact of public agricultural R&D investment on crop yield growth across Sub-Saharan African countries. 2) to evaluate the effect of public agricultural R&D spending on total factor productivity (TFP) growth in Sub-Saharan Africa. The statistical tools employed for the study were descriptive statistics and panel unit root test using Levin-Lin-Chu, Breitung, and Im-Pesaran-Shin unit root tests. The findings show that the crop yield variable was found to be non-stationary, implying trends or persistent shocks over time. It shows a positive and significant effect of R&D on yield. The differenced values fluctuated around zero, confirming improved stationarity. Similarly, the Total Factor Productivity (TFP) Index was established to be stationary, suggesting short-term fluctuations around a stable mean and making it a suitable dependent variable in evaluating R&D impacts. Hence, TFP and R&D are stationary which shows substantial positive correlation, supporting productivity enhancement via public R&D. The study recommends examining the role of private agricultural R&D and its interaction with public investments in enhancing productivity.
References
Alston, J. M., Beddow, J. M., & Pardey, P. G. (2010). Global patterns of crop yield growth: The roles of scientific research and technological change. In Handbook of Agricultural Economics. 4, 739–798.
Beintema, N. M., & Stads, G. J. (2017). A comprehensive overview of investments and human resource capacity in African agricultural research. IFPRI and ASTI. Retrieved from https://www.asti.cgiar.org
FAO. (2020). The State of Food and Agriculture 2020. Rome: Food and Agriculture Organization of the United Nations.
Fuglie, K., & Rada, N. (2013). Resources, policies, and agricultural productivity in sub-Saharan Africa. U.S. Department of Agriculture, Economic Research Service. https://www.ers.usda.gov/publications/pub-details/?pubid=45235
Bjornlund, V., Bjornlund, H. Rooyen, A.F.V. (2020). Why agricultural production in sub Saharan Africa remains low compared to the rest of the world – a historical perspective. International Journal of Water Resources Development, 36(1), 20–53 https://doi.org/10.1080/07900627.2020.1739512
Djoumessi, Y.F. (2022). New trend of agricultural productivity growth in sub-Saharan Africa.Scientific African 18, 1-12. www.elsevier.com/locate/sciaf
Evenson, R. E., & Gollin, D. (2003). Assessing the impact of the Green Revolution, 1960 - 2000. Science, 300(5620), 758–762. https://doi.org/10.1126/science.1078710
Fuglie, K. O. (2012). Productivity growth and technology capital in the global agricultural economy. In Productivity Growth in Agriculture (pp. 335–368). Springer.
Food and Agriculture Organization (FAO). (2017). The future of food and agriculture – Trends and challenges. Rome: FAO. https://www.fao.org/3/i6583e/i6583e.pdf
Hodjo, M., Dalton, T. and Nakelse, T. (2023). Does Public Spending Trigger Agricultural Productivity Growth in Africa? Journal of African Development 24 (1): 65–104. https://doi.org/10.5325/jafrideve.
Mustapha, S.A. and Enilolobo, O.S. (2019). Role of Public Agriculture Spending on Performance in Sub-Saharan Africa: A Channel-Based Analyses. Canadian Social Science, 15(8). 59-73.
Osinubi, T.T. and Apanisile, O.T. (2021). Effect of Agricultural Investment on Food Security in Sub Saharan Africa: What Role Does Institution Play? International Journal of Food and Agricultural Economics, 9(2), 125-141. https://www.researchgate.net/publication/351368254
Sechoutdi, Y.P. and Chabossou, F.A. (2020). Is Public Agricultural Expenditure Effective on Agricultural Production in Sub-Saharan Africa? International journal of Economics, Commerce and Management, 8(8), 312-327. http://ijecm.co.uk/
Soko, N.N., Kaitibie, S. and Ratna, N.N. (2023). Does institutional quality affect the impact of public agricultural spending on food security in Sub-Saharan Africa and Asia? Global Food Security, 36, www.sciencedirect.com
Wangusi, C.and Muturi, W. (2015). Impact of Agricultural Public Spending on Agricultural Productivity: Case Study of Kenya. International Journal of Sciences: Basic and Applied Research (IJSBAR), 24(4), 180-187.