Economics Working Papers 2025, 9(2):4-53 | DOI: 10.32725/ewp.2025.002147


Agricultural Sector Performance in SADC Countries

Mabeta Joshua
University of South Bohemia in České Budějovice, Faculty of Economics


This paper reviews the agricultural sector performance of Southern African Development Community (SADC) countries, specifically the efficiency of agricultural production and the overall competitiveness of their agricultural sectors. The study uses data spanning the period from 2001 to 2019 to assess agricultural production performance, and from 2001 to 2021 to investigate the competitiveness of the agricultural sectors. Using Malmquist productivity indices, the findings reveal that while overall productivity has increased in SADC, with 11 out of 15 countries recording an upward trajectory during the review period, technological progress has regressed. The gains in productivity have been driven by technical efficiency rather than advancements in technology. On the other hand, the Normalized Revealed Comparative Advantage (NRCA) index shows that 11 out of the 16 SADC countries were competitive, especially among diversified economies like South Africa, Zimbabwe, and Tanzania, compared to less diversified countries. This demonstrates that diversification plays a critical role in resilience to shocks such as climate change, variability, and global commodity price fluctuations. The findings further reveal that mineral-rich countries have less competitive agricultural sectors, potentially reflecting the presence of Dutch disease. These findings highlight the need to attract foreign direct investment (FDI) not only to reduce the funding gap in the agricultural sectors of SADC countries but also to bring much-needed technological innovation that can drive agricultural productivity, meet the food needs of the fast-growing population, and contribute to the overall growth of their economies.

Keywords: Efficiency, competitiveness, SADC, Malmquist index, Normalized Revealed Comparative Advantage index
JEL classification: F14, F15, F21, Q10, Q17

Received: May 8, 2025; Revised: June 11, 2025; Accepted: June 12, 2025; Published: June 12, 2025  Show citation

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Mabeta, J. (2025).
Agricultural Sector Performance in SADC Countries. Economics Working Papers9(2), 4-53. doi: 10.32725/ewp.2025.002
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References

  1. References
  2. Abdulai, D. N. (2016). Chinese Investment in Africa: How African Countries Can Position Themselves to Benefit from China's Foray into Africa. Routledge. https://doi.org/10.4324/9781315571782 Go to original source...
  3. Abed, R., & Acosta, A. (2018). Assessing livestock total factor productivity: A Malmquist Index approach. 13(4).
  4. Adetutu, M. O., & Ajayi, V. (2020). The impact of domestic and foreign R&D on agricultural productivity in sub-Saharan Africa. World Development, 125, 104690. https://doi.org/10.1016/j.worlddev.2019.104690 Go to original source...
  5. Adu-Baffour, F., Daum, T., & Birner, R. (2019). Can small farms benefit from big companies' initiatives to promote mechanization in Africa? A case study from Zambia. Food Policy, 84, 133-145. https://doi.org/10.1016/j.foodpol.2019.03.007 Go to original source...
  6. AfDB. (2016). Feed Africa: Strategy for Agricultural Transformation in Africa 2016-2025. African Development Bank (AfDB). Available at https://www.afdb.org/fileadmin/uploads/afdb/Documents/Generic-Documents/Feed_Africa-_Strategy_for_Agricultural_Transformation_in_Africa_2016-2025.pdf. Accessed January 07, 2025
  7. Alene, A. D. (2010). Productivity growth and the effects of R&D in African agriculture. Agricultural Economics, 41(3-4), 223-238. https://doi.org/10.1111/j.1574-0862.2010.00450.x Go to original source...
  8. Amare, M., Jensen, N. D., Shiferaw, B., & Cissé, J. D. (2018). Rainfall shocks and agricultural productivity: Implication for rural household consumption. Agricultural Systems, 166, 79-89. https://doi.org/10.1016/j.agsy.2018.07.014 Go to original source...
  9. AUDA-NEPAD. (2013). NEPAD Transforming Africa: Annual report 2013 (pp. 1-65). New Partnership for Africa's Development. Available at https://archives.au.int/bitstream/handle/123456789/1707/2013_Annual_Report_E.pdf?sequence=1&isAllowed=y. Accessed April 17, 2024
  10. AUDA-NEPAD. (2024). CAADP - Comprehensive Africa Agricultural Development Programme. https://caadp.org/
  11. Baion, Y. M., Yunxia, W., Foday, E. H., Jianmin, C., Chuanfu, L., & Agyeman, O. (2023). Comparative performance of agricultural productivity in 44 SSA countries for a period of 59 years (1961-2019): A Malmquist productivity index approach. PLOS ONE, 18(7), e0284461. https://doi.org/10.1371/journal.pone.0284461 Go to original source...
  12. Balassa, B. A. (1965). Trade Liberalization and Revealed Comparative Advantage. The Manchester School of Economic and Social Studies, 33(2), 99-123. https://doi.org/10.1111/j.1467-9957.1965.tb00050.x Go to original source...
  13. Banerjee, S., Hazra, S., Khan, M. A., & ul Husnain, M. I. (2021). Investigating India's pollution-intensive 'dirty' trade specialisation: Analysis with 'revealed symmetric comparative advantage' index. Environmental Science and Pollution Research, 28(23), 30153-30167. https://doi.org/10.1007/s11356-021-12790-4 Go to original source...
  14. Baudron, F., Misiko, M., Getnet, B., Nazare, R., Sariah, J., & Kaumbutho, P. (2019). A farm-level assessment of labor and mechanization in Eastern and Southern Africa. Agronomy for Sustainable Development, 39(2), 17. https://doi.org/10.1007/s13593-019-0563-5 Go to original source...
  15. Baudron, F., Zaman-Allah, M. A., Chaipa, I., Chari, N., & Chinwada, P. (2019). Understanding the factors influencing fall armyworm (Spodoptera frugiperda J.E. Smith) damage in African smallholder maize fields and quantifying its impact on yield. A case study in Eastern Zimbabwe. Crop Protection, 120, 141-150. https://doi.org/10.1016/j.cropro.2019.01.028 Go to original source...
  16. Begg, I. (2021). The European Union and regional economic integration: Creating collective public goods - Past, present and future | Think Tank | European Parliament. Available at https://www.europarl.europa.eu/thinktank/en/document/EPRS_BRI(2021)689369. Accessed January 28, 2025
  17. Benjamin, J., Idowu, O., Babalola, O. K., Oziegbe, E. V., Oyedokun, D. O., Akinyemi, A. M., & Adebayo, A. (2024). Cereal production in Africa: The threat of certain pests and weeds in a changing climate-a review. Agriculture & Food Security, 13(1), 18. https://doi.org/10.1186/s40066-024-00470-8 Go to original source...
  18. Bjornlund, V., Bjornlund, H., & Van Rooyen, A. F. (2020a). 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(sup1), S20-S53. https://doi.org/10.1080/07900627.2020.1739512 Go to original source...
  19. Bjornlund, V., Bjornlund, H., & Van Rooyen, A. F. (2020b). Why agricultural production in sub-Saharan Africa remainslow compared to the rest of the world - a historicalperspective. Go to original source...
  20. Bojnec, ©., & Fertő, I. (2015). Agri-Food Export Competitiveness in European Union Countries. JCMS: Journal of Common Market Studies, 53(3), 476-492. https://doi.org/10.1111/jcms.12215 Go to original source...
  21. Bouët, A., & Odjo, S. (2020). The competitiveness of African agriculture: Revisiting trade policy reform in Africa (0 ed.). International Food Policy Research Institute. https://doi.org/10.2499/9780896293946_11 Go to original source...
  22. Bouët, A., Odjo, S. P., & Zaki, C. (2022). Africa Agriculture Trade Monitor 2022 (pp. 1-236). AKADEMIYA2063 and International Food Policy Research Institute. https://doi.org/10.54067/9781737916437 Go to original source...
  23. Can, M., Balsalobre-Lorente, D., Adedoyin, F. F., & Mercan, M. (2023). The impact of trade openness, export concentration and economic complexity on energy demand among G7 countries. Energy & Environment, 0958305X231177740. https://doi.org/10.1177/0958305X231177740 Go to original source...
  24. Chen, J., Chen, D., & Yao, A. (2020). Trade development between China and countries along the Belt and Road: A spatial econometric analysis based on trade competitiveness and complementarity. Pacific Economic Review, 25(2), 205-227. https://doi.org/10.1111/1468-0106.12329 Go to original source...
  25. 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(s1), 115-134. https://doi.org/10.1111/j.0169-5150.2004.00018.x Go to original source...
  26. Cooper, W. W., Seiford, L. M., & Tone, K. (2007). Data envelopment analysis: A comprehensive text with models, applications, references and DEA-solver software (2nd ed). Springer. Go to original source...
  27. Corovic, E., & Jestratijevic, I. (2021). Assessing the Competitiveness of Serbian Textile and Apparel Industry Exports Using RCA Index and TPI Indicators. Fibres and Textiles in Eastern Europe, 29(4(148)), 15-23. https://doi.org/10.5604/01.3001.0014.8226 Go to original source...
  28. Cui, Z., Zhang, H., Chen, X., Zhang, C., Ma, W., Huang, C., Zhang, W., Mi, G., Miao, Y., Li, X., Gao, Q., Yang, J., Wang, Z., Ye, Y., Guo, S., Lu, J., Huang, J., Lv, S., Sun, Y., … Dou, Z. (2018). Pursuing sustainable productivity with millions of smallholder farmers. Nature, 555(7696), 363-366. https://doi.org/10.1038/nature25785 Go to original source...
  29. Dai, Y.-Y., Yuan, Y.-M., Yuan, Y., Zhou, Z., & Zhang, H.-Y. (2020). Competitiveness of Chinese and Indonesian tilapia exports in the US market. Aquaculture International, 28(2), 791-804. https://doi.org/10.1007/s10499-019-00496-x Go to original source...
  30. Danna-Buitrago, J. P., & Stellian, R. (2021). A New Class of Revealed Comparative Advantage Indexes. Open Economies Review, 33(3), 477-503. https://doi.org/10.1007/s11079-021-09636-4 Go to original source...
  31. De Saint. (2008). Base de données CHELEM - commerce international du CEPII Tech Rep 9, Paris, Centre d'études Prospectives et d'Informations Internationales. Available at https://www.cepii.fr/PDF_PUB/wp/2008/wp2008-09.pdf. Accessed February 27, 2025
  32. Dedehouanou, F., Dimaranan, B., & Laborde Debucquet, D. (2019a). Competitiveness of African agricultural value chains (0 ed.). International Food Policy Research Institute. https://doi.org/10.2499/9780896296909_04 Go to original source...
  33. Dedehouanou, F., Dimaranan, B., & Laborde Debucquet, D. (2019b). Competitiveness of African agricultural value chains. https://hdl.handle.net/10568/146617 Go to original source...
  34. Dehasse, J. (2017). Getting Togo's Agriculture Back on Track, and Lifting Rural Families Out of Poverty Along the Way. World Bank Blogs. Available at https://blogs.worldbank.org/en/nasikiliza/getting-togos-agriculture-back-on-track-and-lifting-rural-families-out-of-poverty-along-the-way. Accessed January 10, 2025
  35. Dimitrijević, M. S. (2023). COMPETITIVENESS OF THE AGRI-FOOD SECTOR OF THE REPUBLIC OF SERBIA. Journal of Agricultural Sciences (Belgrade), 68(3), Article 3. https://aseestant.ceon.rs/index.php/jas/article/view/44004 Go to original source...
  36. Djoumessi, Y. F. (2022). New trend of agricultural productivity growth in sub-Saharan Africa. Scientific African, 18, e01410. https://doi.org/10.1016/j.sciaf.2022.e01410 Go to original source...
  37. Dzanku, F. M., Jirström, M., & Marstorp, H. (2015). Yield Gap-Based Poverty Gaps in Rural Sub-Saharan Africa. World Development, 67, 336-362. https://doi.org/10.1016/j.worlddev.2014.10.030 Go to original source...
  38. Fam, K. (2016). Analysis of the Factors Influencing Bulgaria-China Trade Competitiveness Index before and after Bulgaria's Accession to the European Union. 609-614. https://doi.org/10.2991/hss-26.2016.103 Go to original source...
  39. Fortis, M., Corradini, S., & Carminati, M. (2015). Italy's Competitiveness According to UNCTAD/WTO's Trade Performance Index. In M. Fortis, S. Corradini, & M. Carminati (Eds.), Italy's Top Products in World Trade: The Fortis-Corradini Index (pp. 7-11). Springer International Publishing. https://doi.org/10.1007/978-3-319-15817-4_2 Go to original source...
  40. Fuglie, K. O. (2018). Is agricultural productivity slowing? Global Food Security, 17, 73-83. https://doi.org/10.1016/j.gfs.2018.05.001 Go to original source...
  41. Gamariel, G., & Hove, S. (2019). Foreign Direct Investment and Export Competitiveness in Africa: Investigating the Channels. Journal of African Trade, 6(1), 30-46. https://doi.org/10.2991/jat.k.191115.001 Go to original source...
  42. Gilbert, J., & Muchová, E. (2018). Export competitiveness of Central and Eastern Europe since the enlargement of the EU. International Review of Economics & Finance, 55, 78-85. https://doi.org/10.1016/j.iref.2018.01.008 Go to original source...
  43. Goyal, A., & Nash, J. (2016). Reaping Richer Returns: Public Spending Priorities for African Agriculture Productivity Growth. World Bank. https://documents.worldbank.org/curated/en/657671476866050422/pdf/109330-WP-P153531-PUBLIC-ENGLISH-WBReapingRicherReturnsfinalweb.pdf Go to original source...
  44. Hatami-Marbini, A., & Saati, S. (2018). Efficiency evaluation in two-stage data envelopment analysis under a fuzzy environment: A common-weights approach. Applied Soft Computing, 72, 156-165. https://doi.org/10.1016/j.asoc.2018.07.057 Go to original source...
  45. Hayami, Y., & Ruttan, V. W. (1985). Agricultural Development: An International Perspective. Johns Hopkins University Press.
  46. Hoen, A. R., & Oosterhaven, J. (2006). On the measurement of comparative advantage. The Annals of Regional Science, 40(3), 677-691. https://doi.org/10.1007/s00168-006-0076-4 Go to original source...
  47. ITC. (2020). Trade Competitiveness Map (pp. 1-55). International Trade Centre. Available at https://tradecompetitivenessmap.intracen.org/Documents/TradeCompMap-Trade%20Performance%20Index-Technical%20Notes-EN.pdf. Accessed February 27, 2025
  48. Jayne, T. S., & Sanchez, P. A. (2021). Agricultural productivity must improve in sub-Saharan Africa. Science, 372(6546), 1045-1047. https://doi.org/10.1126/science.abf5413 Go to original source...
  49. Jayne, T. S., Snapp, S., Place, F., & Sitko, N. (2019). Sustainable agricultural intensification in an era of rural transformation in Africa. Global Food Security, 20, 105-113. https://doi.org/10.1016/j.gfs.2019.01.008 Go to original source...
  50. Kanupriya. (2020). Export Similarity Index as a Barometer of Indian Textiles Exports Competitiveness. The Indian Economic Journal, 68(3), 457-464. https://doi.org/10.1177/0019466220959567 Go to original source...
  51. Kim, D.-G., Grieco, E., Bombelli, A., Hickman, J. E., & Sanz-Cobena, A. (2021). Challenges and opportunities for enhancing food security and greenhouse gas mitigation in smallholder farming in sub-Saharan Africa. A review. Food Security, 13(2), 457-476. https://doi.org/10.1007/s12571-021-01149-9 Go to original source...
  52. Kirui, O. K., Kornher, L., & Bekchanov, M. (2023). Productivity growth and the role of mechanisation in African agriculture. Agrekon, 62(1), 80-97. https://doi.org/10.1080/03031853.2023.2176894 Go to original source...
  53. Lafay, G. (1992). The measurement of revealed comparative advantages. In M. G. Dagenais & P. A. Muet (Eds.), International Trade Modeling (pp. 209-234). Chapman & Hill, London. http://www.researchgate.net/publication/289828088_The_measurement_of_revealed_comparative_advantages Go to original source...
  54. Laursen, K. (2015). Revealed comparative advantage and the alternatives as measures of international specialization. Eurasian Business Review, 5(1), 99-115. https://doi.org/10.1007/s40821-015-0017-1 Go to original source...
  55. Lee, G., Li, X., & Shim, S. (2022). A Comparative Study on the Export Similarity Index (ESI) and Trade Competitiveness Index (TCI) of Korean Construction Machinery with China and the U.S.A. Korean Journal of Construction Engineering and Management, 23(2), 16-23. https://doi.org/10.6106/KJCEM.2022.23.2.016 Go to original source...
  56. Li, G., & Wang, W. (2016). Investing in Africa's Agriculture: Solidifying Foundation for Sustainable and Inclusive Development. World Bank. Available at http:// documents.worldbank.org/curated/en/847331472710963734/pdf/108109REVISED-WP-PUBLIC.pdf. Accessed January 07,2025
  57. Liu, B., & Gao, J. (2019). Understanding the Non-Gaussian Distribution of Revealed Comparative Advantage Index and its Alternatives. International Economics, 158, 1-11. https://doi.org/10.1016/j.inteco.2019.01.001 Go to original source...
  58. Luo, Q., Miao, C., Sun, L., Meng, X., & Duan, M. (2019). Efficiency evaluation of green technology innovation of China's strategic emerging industries: An empirical analysis based on Malmquist-data envelopment analysis index. Journal of Cleaner Production, 238, 117782. https://doi.org/10.1016/j.jclepro.2019.117782 Go to original source...
  59. Mabeta, J., & Smutka, L. (2023a). Historical and Contemporary Perspectives of the Sugar Industry in Sub-Saharan Africa. Ukranian Food Journal, 12(1), 157-171. http://dx.doi.org/10.24263/2304-974X-2023-12-1-12 Go to original source...
  60. Mabeta, J., & Smutka, L. (2023b). Trade and competitiveness of African sugar exports. Frontiers in Sustainable Food Systems, 7, 1-14. https://doi.org/10.3389/fsufs.2023.1304383 Go to original source...
  61. Matkovski, B., Kalaą, B., Zekić, S., & Jeremić, M. (2019). Agri-food competitiveness in South East Europe. Outlook on Agriculture, 48(4), 326-335. https://doi.org/10.1177/0030727019854770 Go to original source...
  62. Modi, R. (2019). The Role of Agriculture for Food Security and Poverty Reduction in Sub-Saharan Africa. In T. M. Shaw, L. C. Mahrenbach, R. Modi, & X. Yi-chong (Eds.), The Palgrave Handbook of Contemporary International Political Economy (pp. 391-410). Palgrave Macmillan UK. https://doi.org/10.1057/978-1-137-45443-0_25 Go to original source...
  63. Modi, R., & Cheru, F. (2013). Agricultural Development and Food Security in Africa: The Impact of Chinese, Indian and Brazilian Investments. Bloomsbury Publishing.
  64. Moyo, B. (2024). Impact of SADC Free Trade Area on Southern Africa's Intra-Trade Performance: Implications for the African Continental Free Trade Area. Foreign Trade Review, 59(1), 146-180. https://doi.org/10.1177/00157325231184669 Go to original source...
  65. Nakawuka, P., Langan, S., Schmitter, P., & Barron, J. (2018). A review of trends, constraints and opportunities of smallholder irrigation in East Africa. Global Food Security, 17, 196-212. https://doi.org/10.1016/j.gfs.2017.10.003 Go to original source...
  66. Naseer, M. A. ur R., Ashfaq, M., Hassan, S., Adil, S. A., & Ariyawardana, A. (2019). Outlook on the global trade competitiveness of Pakistan's mandarin industry: An application of revealed symmetric comparative advantage framework. Outlook on Agriculture, 48(1), 66-74. https://doi.org/10.1177/0030727018817788 Go to original source...
  67. Ngepah, N., & Udeagha, M. C. (2018). African Regional Trade Agreements and Intra-African Trade. Journal of Economic Integration, 33(1), 1176-1199. Go to original source...
  68. Odjo, S., & Badiane, O. (2018). Competitiveness of African Agricultural Exports. In Africa Agriculture Trade Monitor 2018 (pp. 50-84). International Food Policy Research Institute (IFPRI). https://www.ifpri.org/cdmref/p15738coll2/id/132824/filename/133037.pdf
  69. Okou, C., Spray, J., & Unsal, F. (2022). Staple Food Prices in Sub-Saharan Africa: An Empirical Assessment. IMF Working Papers, 2022(135), 1. https://doi.org/10.5089/9798400216190.001 Go to original source...
  70. Ray, D. K., West, P. C., Clark, M., Gerber, J. S., Prishchepov, A. V., & Chatterjee, S. (2019). Climate change has likely already affected global food production. PLOS ONE, 14(5), e0217148. https://doi.org/10.1371/journal.pone.0217148 Go to original source...
  71. RESAKSS. (2025). Monitoring progress. https://www.resakss.org/node/3
  72. Rooyen, C. J. van, & Esterhuizen, D. (2012). Measurement and Analysis of the Trends in Competitive Performance: South African Agribusiness during the 2000's. Journal of Applied Management and Investments, 1(4), 426-434.
  73. SADC. (2022). SADC Annual Report 2021-22. Southern African Development Community. Avaialble at https://www.sadc.int/sites/default/files/2022-09/EN%20Annual%20Report%202021-22%20FINAL.pdf. Accessed January 21, 2025
  74. SADC. (2024a). Employment and Labour. Southern African Development Community: Towards a Common Future. https://www.sadc.int/pillars/employment-labour
  75. SADC. (2024b). Food, Agriculture & Natural Resources | SADC. Southern African Development Community: Towards a Common Future. https://www.sadc.int/pillars/food-agriculture-natural-resources
  76. SADC. (2025). Commonly traded commodities in SADC region. Available at https://jisportal.sadc.int/sadc-commodities. Accessed January 29, 2025
  77. Sandrey, R., Viljoen, W., Ntshangase, T., Mugrefya, M., Potelwa, Y., Motsepe, T., Pheko, M., Sauli, P., Chidede, T., Jacobs, N., & Maiketso, J. (2018). Agriculture and the AfCFTA. Trade Law Centre. https://www.tralac.org/documents/publications/books/namc-2018/2164-agriculture-and-the-afcfta-tralac-namc-complete-e-book-2018.html
  78. Seleka, T. B., & Dlamini, T. S. (2020). Competitiveness of ACP Sugar Exporters in the Global Market. The International Trade Journal, 34(2), 247-277. https://doi.org/10.1080/08853908.2019.1691091 Go to original source...
  79. Seleka, T. B., & Kebakile, P. G. (2017). Export Competitiveness of Botswana's Beef Industry. The International Trade Journal, 31(1), 76-101. https://doi.org/10.1080/08853908.2016.1199982 Go to original source...
  80. Sheahan, M., & Barrett, C. B. (2017). Ten striking facts about agricultural input use in Sub-Saharan Africa. Food Policy, 67, 12-25. https://doi.org/10.1016/j.foodpol.2016.09.010 Go to original source...
  81. Stellian, R., & Danna-Buitrago, J. P. (2022a). Revealed Comparative Advantage and Contribution-to-the-Trade-Balance Indexes. International Economics, 170, 129-155. https://doi.org/10.1016/j.inteco.2022.02.007 Go to original source...
  82. Stellian, R., & Danna-Buitrago, J. P. (2022b). Which Revealed Comparative Advantage Index to Choose? Theoretical and Empirical Considerations. CEPAL Review No. 138. https://repositorio.cepal.org/bitstream/handle/11362/48807/1/RVI138_Stellian.pdf Go to original source...
  83. Stellian, R., Ojeda-Joya, J. N., & Danna-Buitrago, J. P. (2024). Time stationarity, shape and ordinal ranking bias of RCA indexes: A new set of measures. Review of World Economics, 160(2), 675-711. https://doi.org/10.1007/s10290-023-00512-6 Go to original source...
  84. Szamosköziné Kispál, G. (2015). Enometrics XXII OUESTIONS OF WINEGRAPE IRRIGATION IN HUNGARIAN WINE REGIONS. 2015, 140-150.
  85. Szczepaniak, I. (2019). Changes in comparative advantages of the Polish food sector in world trade. Equilibrium. Quarterly Journal of Economics and Economic Policy, 14(3), 463-480. Go to original source...
  86. ten Berge, H. F. M., Hijbeek, R., van Loon, M. P., Rurinda, J., Tesfaye, K., Zingore, S., Craufurd, P., van Heerwaarden, J., Brentrup, F., Schröder, J. J., Boogaard, H. L., de Groot, H. L. E., & van Ittersum, M. K. (2019). Maize crop nutrient input requirements for food security in sub-Saharan Africa. Global Food Security, 23, 9-21. https://doi.org/10.1016/j.gfs.2019.02.001 Go to original source...
  87. Tesfaye, K., Gbegbelegbe, S., Cairns, J. E., Shiferaw, B., Prasanna, B. M., Sonder, K., Boote, K., Makumbi, D., & Robertson, R. (2015). Maize systems under climate change in sub-Saharan Africa: Potential impacts on production and food security. International Journal of Climate Change Strategies and Management, 7(3), 247-271. https://doi.org/10.1108/IJCCSM-01-2014-0005 Go to original source...
  88. Udimal, T. B., Peng, Z., Cao, C., & Zhang, L. (2022). Efficiency of Investment in Agricultural R & D in Relation to Food Production Index: A Malmquist Index Analysis for the West-African Countries. The Journal of Developing Areas, 56(3), 31-49. https://doi.org/10.1353/jda.2022.0042 Go to original source...
  89. UNCTAD. (2024, May 23). Export concentration index - UNCTAD SDG Pulse 2024. Available at https://sdgpulse.unctad.org/glossary/export-concentration-index/. Accessed February 28, 2025
  90. Viljoen, W. (2014). The End of the EU Sugar Quota and the Implication for African Producers. Available at https://www.tralac.org/discussions/article/5684-the-end-of-the-eu-sugar-quota-and-the-implication-for-african-producers.html. Accessed February 19, 2023
  91. Vollrath, T. L. (1989). Competitiveness and Protection in World Agriculture (Agriculture Information Bulletin No. 567). https://doi.org/10.22004/ag.econ.309494 Go to original source...
  92. Vollrath, T. L. (1991). A theoretical evaluation of alternative trade intensity measures of revealed comparative advantage. Weltwirtschaftliches Archiv, 127(2), 265-280. https://doi.org/10.1007/BF02707986 Go to original source...
  93. Wang, L., Sun, T.-L., & Cai, Z.-Q. (2022). Dynamics of Chinese Export Comparative Advantage: Analysis Based on RSCA Index. Journal of Mathematics, 2022(1), 2566259. https://doi.org/10.1155/2022/2566259 Go to original source...
  94. Wang, P.-Z., & Liu, X.-J. (2015). Comparative Analysis of Export Similarity Index between China and EU. 222-227. https://doi.org/10.2991/msmi-15.2015.42 Go to original source...
  95. Yu, R., Cai, J., & Leung, P. (2009). The Normalized Revealed Comparative Advantage Index. The Annals of Regional Science, 43(1), 267-282. https://doi.org/10.1007/s00168-008-0213-3 Go to original source...
  96. Zdráhal, I., Lategan, F. S., & van der Merwe, M. (2023). A constant market share analysis of the competitiveness of the Czech Republic's agrifood exports (2002-2020) to the European Union. https://repozitar.mendelu.cz/xmlui/handle/20.500.12698/1948 Go to original source...
  97. Zhou, L., & Tong, G. (2022). Research on the competitiveness and influencing factors of agricultural products trade between China and the countries along the "Belt and Road". Alexandria Engineering Journal, 61(11), 8919-8931. https://doi.org/10.1016/j.aej.2022.02.030 Go to original source...

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