IDEAS home Printed from https://ideas.repec.org/a/eee/agiwat/v217y2019icp23-37.html
   My bibliography  Save this article

The dual-purpose use of orange-fleshed sweet potato (Ipomoea batatas var. Bophelo) for improved nutritional food security

Author

Listed:
  • Nyathi, M.K.
  • Du Plooy, C.P.
  • Van Halsema, G.E.
  • Stomph, T.J.
  • Annandale, J.G.
  • Struik, P.C.

Abstract

Orange-fleshed sweet potato (OFSP) leaves can be utilised as a fresh green leafy vegetable, in addition to the traditional use of storage root; therefore, OFSP can be seen as a “dual-purpose’’ crop. We hypothesized that no vine harvesting combined with fertiliser application and irrigation will improve the storage root yield and selected plant parameters (water productivity, leaf and storage root nutrient concentrations, nutritional yield, and nutritional water productivity). The objectives of the study were to (i) evaluate the effect of vine harvesting on the selected plant parameters, and, (ii) assess the effect of irrigation regimes and soil fertilisation on these selected parameters. Field experiments were conducted at ARC-VOP, Pretoria, South Africa, during the 2013/14 and 2014/15 seasons. Treatments included irrigation regimes [well-watered (W1) and supplemental irrigation (W2)], soil fertilisation [well-fertilised (F1) and no fertiliser application (F2)], and vine harvesting [no vine harvesting (H1) and vine harvesting (H2)]. For the 2014/15 season, the well-watered regime improved total storage root yield (W1 = 13.0 t DM ha−1; W2 = 7.5 t DM ha−1). Under the practice of vine harvesting, soil fertility treatments did not affect (total dry storage root yield and dry marketable storage root yield) storage root production. Our results further revealed that vine harvesting reduced storage root nutrient concentrations (23% for iron; 14% for zinc; 12% for β-carotene). Nevertheless, total nutritional yields increased; the highest total nutritional yields for iron, zinc, and β-carotene were found under the water and nutrient input regime (W1F1). Assessments showed that boiled orange-fleshed sweet potato aboveground edible biomass could potentially contribute to the daily-recommended nutritional requirement of iron and vitamin A for a family of six people. More water was needed to meet the daily-recommended nutrient intake (iron, zinc, and vitamin A) with OFSP grown as a storage root crop only than when grown as a dual-purpose crop. Our results indicated that there is an opportunity to utilise OFSP as a dual-purpose crop for rural resource-poor households because total nutritional yields (iron, zinc, and β-carotene) and total nutritional water productivities (iron, zinc, and β-carotene) were improved. More research is needed to assess the effect of vine harvesting on a range of OFSP varieties and should be conducted on the farm. Rural resource-poor households are encouraged to produce OFSP for their own consumption and the surplus could be sold at the local market.

Suggested Citation

  • Nyathi, M.K. & Du Plooy, C.P. & Van Halsema, G.E. & Stomph, T.J. & Annandale, J.G. & Struik, P.C., 2019. "The dual-purpose use of orange-fleshed sweet potato (Ipomoea batatas var. Bophelo) for improved nutritional food security," Agricultural Water Management, Elsevier, vol. 217(C), pages 23-37.
  • Handle: RePEc:eee:agiwat:v:217:y:2019:i:c:p:23-37
    DOI: 10.1016/j.agwat.2019.02.029
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0378377418316500
    Download Restriction: Full text for ScienceDirect subscribers only

    File URL: https://libkey.io/10.1016/j.agwat.2019.02.029?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Chimonyo, V.G.P. & Modi, A.T. & Mabhaudhi, T., 2016. "Water use and productivity of a sorghum–cowpea–bottle gourd intercrop system," Agricultural Water Management, Elsevier, vol. 165(C), pages 82-96.
    2. Mabhaudhi, T. & Modi, A.T. & Beletse, Y.G., 2013. "Response of taro (Colocasia esculenta L. Schott) landraces to varying water regimes under a rainshelter," Agricultural Water Management, Elsevier, vol. 121(C), pages 102-112.
    3. Nyathi, M.K. & Van Halsema, G.E. & Beletse, Y.G. & Annandale, J.G. & Struik, P.C., 2018. "Nutritional water productivity of selected leafy vegetables," Agricultural Water Management, Elsevier, vol. 209(C), pages 111-122.
    4. Claessens, L. & Stoorvogel, J.J. & Antle, J.M., 2008. "Ex ante assessment of dual-purpose sweet potato in the crop-livestock system of western Kenya: A minimum-data approach," Agricultural Systems, Elsevier, vol. 99(1), pages 13-22, December.
    5. Renault, D. & Wallender, W. W., 2000. "Nutritional water productivity and diets," Agricultural Water Management, Elsevier, vol. 45(3), pages 275-296, August.
    6. Nyathi, M.K. & van Halsema, G.E. & Annandale, J.G. & Struik, P.C., 2018. "Calibration and validation of the AquaCrop model for repeatedly harvested leafy vegetables grown under different irrigation regimes," Agricultural Water Management, Elsevier, vol. 208(C), pages 107-119.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Nyathi, M.K. & Mabhaudhi, T. & Van Halsema, G.E. & Annandale, J.G. & Struik, P.C., 2019. "Benchmarking nutritional water productivity of twenty vegetables - A review," Agricultural Water Management, Elsevier, vol. 221(C), pages 248-259.
    2. Li, Bo & Wim, Voogt & Shukla, Manoj Kumar & Du, Taisheng, 2021. "Drip irrigation provides a trade-off between yield and nutritional quality of tomato in the solar greenhouse," Agricultural Water Management, Elsevier, vol. 249(C).
    3. Mulovhedzi, N.E. & Araya, N.A. & Mengistu, M.G. & Fessehazion, M.K. & du Plooy, C.P. & Araya, H.T. & van der Laan, M., 2020. "Estimating evapotranspiration and determining crop coefficients of irrigated sweet potato (Ipomoea batatas) grown in a semi-arid climate," Agricultural Water Management, Elsevier, vol. 233(C).

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Nyathi, M.K. & Van Halsema, G.E. & Beletse, Y.G. & Annandale, J.G. & Struik, P.C., 2018. "Nutritional water productivity of selected leafy vegetables," Agricultural Water Management, Elsevier, vol. 209(C), pages 111-122.
    2. Nyathi, M.K. & Mabhaudhi, T. & Van Halsema, G.E. & Annandale, J.G. & Struik, P.C., 2019. "Benchmarking nutritional water productivity of twenty vegetables - A review," Agricultural Water Management, Elsevier, vol. 221(C), pages 248-259.
    3. Admire Isaac Tichafa Shayanowako & Oliver Morrissey & Alberto Tanzi & Maud Muchuweti & Guillermina M. Mendiondo & Sean Mayes & Albert T. Modi & Tafadzwanashe Mabhaudhi, 2021. "African Leafy Vegetables for Improved Human Nutrition and Food System Resilience in Southern Africa: A Scoping Review," Sustainability, MDPI, vol. 13(5), pages 1-20, March.
    4. Innocent Maseko & Tafadzwanashe Mabhaudhi & Samson Tesfay & Hintsa Tesfamicael Araya & Melake Fezzehazion & Christian Phillipus Du Plooy, 2017. "African Leafy Vegetables: A Review of Status, Production and Utilization in South Africa," Sustainability, MDPI, vol. 10(1), pages 1-16, December.
    5. Gitari, Harun I. & Gachene, Charles K.K. & Karanja, Nancy N. & Kamau, Solomon & Nyawade, Shadrack & Sharma, Kalpana & Schulte-Geldermann, Elmar, 2018. "Optimizing yield and economic returns of rain-fed potato (Solanum tuberosum L.) through water conservation under potato-legume intercropping systems," Agricultural Water Management, Elsevier, vol. 208(C), pages 59-66.
    6. Li, Bo & Wim, Voogt & Shukla, Manoj Kumar & Du, Taisheng, 2021. "Drip irrigation provides a trade-off between yield and nutritional quality of tomato in the solar greenhouse," Agricultural Water Management, Elsevier, vol. 249(C).
    7. Wang, Haidong & Cheng, Minghui & Liao, Zhenqi & Guo, Jinjin & Zhang, Fucang & Fan, Junliang & Feng, Hao & Yang, Qiliang & Wu, Lifeng & Wang, Xiukang, 2023. "Performance evaluation of AquaCrop and DSSAT-SUBSTOR-Potato models in simulating potato growth, yield and water productivity under various drip fertigation regimes," Agricultural Water Management, Elsevier, vol. 276(C).
    8. repec:ags:aaea22:335675 is not listed on IDEAS
    9. Tendai Polite Chibarabada & Albert Thembinkosi Modi & Tafadzwanashe Mabhaudhi, 2017. "Nutrient Content and Nutritional Water Productivity of Selected Grain Legumes in Response to Production Environment," IJERPH, MDPI, vol. 14(11), pages 1-17, October.
    10. Elamri, Y. & Cheviron, B. & Lopez, J.-M. & Dejean, C. & Belaud, G., 2018. "Water budget and crop modelling for agrivoltaic systems: Application to irrigated lettuces," Agricultural Water Management, Elsevier, vol. 208(C), pages 440-453.
    11. Thaler, S. & Zessner, M. & Weigl, M. & Rechberger, H. & Schilling, K. & Kroiss, H., 2015. "Possible implications of dietary changes on nutrient fluxes, environment and land use in Austria," Agricultural Systems, Elsevier, vol. 136(C), pages 14-29.
    12. Bosire, Caroline K. & Krol, Maarten S. & Mekonnen, Mesfin M. & Ogutu, Joseph O. & de Leeuw, Jan & Lannerstad, Mats & Hoekstra, Arjen Y., 2016. "Meat and milk production scenarios and the associated land footprint in Kenya," Agricultural Systems, Elsevier, vol. 145(C), pages 64-75.
    13. Krauß, Michael & Kraatz, Simone & Drastig, Katrin & Prochnow, Annette, 2015. "The influence of dairy management strategies on water productivity of milk production," Agricultural Water Management, Elsevier, vol. 147(C), pages 175-186.
    14. Haileslassie, Amare & Peden, Don & Gebreselassie, Solomon & Amede, Tilahun & Descheemaeker, Katrien, 2009. "Livestock water productivity in mixed crop-livestock farming systems of the Blue Nile basin: Assessing variability and prospects for improvement," Agricultural Systems, Elsevier, vol. 102(1-3), pages 33-40, October.
    15. Vimbayi Grace Petrova Chimonyo & Tendai Polite Chibarabada & Dennis Junior Choruma & Richard Kunz & Sue Walker & Festo Massawe & Albert Thembinkosi Modi & Tafadzwanashe Mabhaudhi, 2022. "Modelling Neglected and Underutilised Crops: A Systematic Review of Progress, Challenges, and Opportunities," Sustainability, MDPI, vol. 14(21), pages 1-19, October.
    16. Yang, Hong & Wang, Lei & Zehnder, Alexander J.B., 2007. "Water scarcity and food trade in the Southern and Eastern Mediterranean countries," Food Policy, Elsevier, vol. 32(5-6), pages 585-605.
    17. Soto-García, M. & Martin-Gorriz, B. & García-Bastida, P.A. & Alcon, F. & Martínez-Alvarez, V., 2013. "Energy consumption for crop irrigation in a semiarid climate (south-eastern Spain)," Energy, Elsevier, vol. 55(C), pages 1084-1093.
    18. van Halsema, Gerardo E. & Vincent, Linden, 2012. "Efficiency and productivity terms for water management: A matter of contextual relativism versus general absolutism," Agricultural Water Management, Elsevier, vol. 108(C), pages 9-15.
    19. Nyathi, M.K. & van Halsema, G.E. & Annandale, J.G. & Struik, P.C., 2018. "Calibration and validation of the AquaCrop model for repeatedly harvested leafy vegetables grown under different irrigation regimes," Agricultural Water Management, Elsevier, vol. 208(C), pages 107-119.
    20. Molden, David & Oweis, Theib & Steduto, Pasquale & Bindraban, Prem & Hanjra, Munir A. & Kijne, Jacob, 2010. "Improving agricultural water productivity: Between optimism and caution," Agricultural Water Management, Elsevier, vol. 97(4), pages 528-535, April.
    21. Delorit, Justin D. & Parker, Dominic P. & Block, Paul J., 2019. "An agro-economic approach to framing perennial farm-scale water resources demand management for water rights markets," Agricultural Water Management, Elsevier, vol. 218(C), pages 68-81.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:agiwat:v:217:y:2019:i:c:p:23-37. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.elsevier.com/locate/agwat .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.