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Water productivity in smallholder irrigation schemes in South Africa

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  • Yokwe, Stanley

Abstract

This study investigates the productivity and value of water in two smallholder irrigation schemes (Zanyokwe and Thabina) in South Africa. We apply the residual valuation method (RVM), willingness to pay (WTP) and cost-based approaches (CBA) (i.e. accounting costs of operation and maintenance) to evaluate water productivity and values per crop, per farm, and by scheme. In both schemes, water value estimated by the RVM for vegetables (cabbage, tomatoes and butternuts) is greater than water value for dry maize. At the farm and scheme levels, a comparison was made between gross margin per m3 of water, WTP per m3 and accounting cost per m3 to estimate the relative value of water productivity. The active farmers in the Zanyokwe scheme have lower WTP per m3 (R0.03) than the gross margin of output (R0.69). Also, the accounting cost (R0.084) per m3 of water is less than the gross margin. In the Thabina scheme, active farmers are willing to pay (R0.19) per m3 of water. Hence farmers in Thabina are ready to pay as much as three times the proposed costs of O&M (R0.062) per m3 of water used. Both the accounting cost and willingness to pay are less than the gross margin per m3 of water in the Zanyokwe scheme. Our findings indicate that extension and training may be required to improve the productive use of water for those farmers whose returns are insufficient to cover the cost of supply.

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  • Yokwe, Stanley, 2009. "Water productivity in smallholder irrigation schemes in South Africa," Agricultural Water Management, Elsevier, vol. 96(8), pages 1223-1228, August.
    • Handle: RePEc:eee:agiwat:v:96:y:2009:i:8:p:1223-1228
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    3. Kiprop, Jonah Kipsaat, 2015. "An Evaluation Of Farmers Willingness To Pay For Irrigation Water In Kerio Valley Basin Kenya," Research Theses 265580, Collaborative Masters Program in Agricultural and Applied Economics.
    4. Muchara, B. & Ortmann, G. & Mudhara, M. & Wale, E., 2016. "Irrigation water value for potato farmers in the Mooi River Irrigation Scheme of KwaZulu-Natal, South Africa: A residual value approach," Agricultural Water Management, Elsevier, vol. 164(P2), pages 243-252.
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    6. Wenxin Liu & Minjuan Zhao & Yu Cai & Rui Wang & Weinan Lu, 2019. "Synergetic Relationship between Urban and Rural Water Poverty: Evidence from Northwest China," IJERPH, MDPI, vol. 16(9), pages 1-22, May.
    7. Mwaura, Francis M. & Muwanika, Fred R., 2018. "Providing irrigation water as a public utility to enhance agricultural productivity in Uganda," Utilities Policy, Elsevier, vol. 55(C), pages 99-109.
    8. Phakathi, Sandile & Sinyolo, Sikhulumile & Marire, Juniors & Fraser, Gavin, 2021. "Farmer-led institutional innovations in managing smallholder irrigation schemes in KwaZulu-Natal and Eastern Cape Provinces, South Africa," Agricultural Water Management, Elsevier, vol. 248(C).
    9. Wenxin Liu & Minjuan Zhao & Wei Hu & Yu Cai, 2018. "Spatial‐temporal variations of water poverty in rural China considered through the KDE and ESDA models," Natural Resources Forum, Blackwell Publishing, vol. 42(4), pages 254-268, November.
    10. Storm, Hugo & Heckelei, Thomas & Heidecke, Claudia, 2010. "Demand Estimation for Irrigation Water in the Moroccan Drâa Valley using Contingent Valuation," Discussion Papers 162895, University of Bonn, Institute for Food and Resource Economics.
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    13. Mwangi, Joseph Kanyua & Crewett, Wibke, 2019. "The impact of irrigation on small-scale African indigenous vegetable growers’ market access in peri-urban Kenya," Agricultural Water Management, Elsevier, vol. 212(C), pages 295-305.

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