Abstract
Partial root-zone drying (PRD) is an irrigation technique which consists of alternating the water supply from one furrow to another, and keeping the other one dry during the weekly alternation period. Studies assessing PRD in potato have reported a 30-50% of water savings with no tuber yield reductions and an increase of antioxidant concentrations and marketable tubers. In this study, we adapted the PRD technique to rural Ethiopian conditions and compared it against the customary (C) irrigation practiced by local farmers. Two PRD alternatives were evaluated; with (PRDs) and without (PRDw) locally made flexible-hose siphons. Only PRDs showed no significant differences in total (35.8±1.6 t ha-1) and marketable (34.2±1.6 t ha-1) tuber yield when compared with customary irrigation (39.4±1.3 and 37.6±1.2 t ha-1 corresponding to total and marketable yield, respectively). The PRDw was more water restricted, showing significantly lower total (29.7±1.1 t ha-1) and marketable (27.6±1.2 t ha-1) yields. PRDs had the benefit of a better control of applied water allowing a saving of 50% of the irrigation water without negatively affecting yield. The use of the siphons PRD technique provides options for saving scarce water and reaching out to many smallholder farmers who are in serious need of irrigation water in the Blue Nile river basin.
References
Abdelmageed N.B., Performance assessment of some developed surface irrigation methods, Int. J. Water Res. Environ. Eng., 2013, 5(7), 399-409Search in Google Scholar
Brouwer C., Prins K., Kay M., Heibloem M., Irrigation water management: Irrigation Methods. Training Manual N°5. Food and Agriculture Organization of the United Nations - FAO. Rome, Italy, 2001Search in Google Scholar
Jiménez Cisneros B.E., Oki T., Arnell N.W., Benito G., Cogley J.G., Döll P., Jiang T., Mwakalila S.S., Freshwater resources, In: Field C.B., Barros V.R., Dokken D.J., Mach K.J., Mastrandrea M.D., Bilir T.E., Chatterjee M., Ebi K.L., Estrada Y.O., Genova R.C., Girma B., Kissel E.S., Levy A.N., MacCracken S., Mastrandrea P.R., White L.L. (Eds.), Climate Change 2014: Impacts, Adaptation, and Vulnerability. Part A: Global and Sectoral Aspects. Contribution of Working Group II to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, 2014, pp. 229-269Search in Google Scholar
Kang S.Z., Zhang, J.H., Controlled alternate partial root-zone irrigation: its physiological consequences and impact on water use efficiency. J. Exp. Bot., 2004, 55, 2437-2446.10.1093/jxb/erh249Search in Google Scholar PubMed
FAO, Irrigation water management: irrigation methods. Annex 2. Infiltration rate and Infiltration test, 2012, http://www.fao.org/docrep/S8684E/s8684e0a.htmSearch in Google Scholar
FAO, World crop production statistics, 2016, http://faostat.fao.org. Accessed 3th November 2016Search in Google Scholar
Iglesias A., Garrote, L. Adaptation strategies for agricultural water management under climate change in Europe, Agric. Water Manag., 2015, 155, 113-12410.1016/j.agwat.2015.03.014Search in Google Scholar
Havlin J.L., Shroyer J.P., Devlin D.L., Establishing on farm demonstration and research plots, Cooperative Extension Service, Kansas State University, Manhattan, 1990, https://www.bookstore.ksre.ksu.edu/pubs/MF966.pdfSearch in Google Scholar
Jensen C.R., Battilani A., Plauborg F., Psarras G., Chartzoulakis K., Janowiak F., et al., Deficit irrigation based on drought tolerance and root signalling in potatoes and tomatoes, Agr. Water. Manage., 2010, 98(3), 403-41310.1016/j.agwat.2010.10.018Search in Google Scholar
Jovanovic Z., Stikic, R., Vucelic-Radovic B., Paukovic M., Brocic Z., Matovic G. et al., Partial root-zone drying increases WUE, N and antioxidant content in field potatoes, Eur. J. Agron., 2010, 33(2), 124-13110.1016/j.eja.2010.04.003Search in Google Scholar
Lal, R. Food security in a changing climate. Ecohydrol. Hydrobiol., 2013, 13, 8-2110.1016/j.ecohyd.2013.03.006Search in Google Scholar
LeClerg E., Leonard W.H., Clark A.G., Field plot technique, 2nd ed., Burgess Publishing Company, Minneapolis, 1962Search in Google Scholar
Liu F.L., Shahnazari A., Andersen M.N., Jacobsen S.E., Jensen C.R, Effects of deficit irrigation (DI) and partial root drying (PRD) on gas exchange, biomass partitioning, and water use efficiency in potato. Sci. Hortic., 2006a, 109(2), 113-11710.1016/j.scienta.2006.04.004Search in Google Scholar
Liu F.L., Shahnazari A., Andersen M.N., Jacobsen S.E., Jensen C.R., Physiological responses of potato (Solanum tuberosum L.) to partial root-zone drying: ABA signalling, leaf gas exchange, and water use efficiency. J. Exp. Bot., 2006b, 57(14), 3727-373510.1093/jxb/erl131Search in Google Scholar PubMed
Monneveux P., Ramírez D.A, Pino M.T., Drought tolerance in potato (S. tuberosum L.): Can we learn from drought tolerance research in cereals? Plant Sci., 2013, 205-206, 76-8610.1016/j.plantsci.2013.01.011Search in Google Scholar PubMed
Posadas A., Rojas G., Malaga M., Mares V., Quiroz R.A, Partial root-zone drying: An alternative irrigation management to improve the water use efficiency of potato crops. 2008-2 Working Paper. International Potato Center, Lima - Peru, 2008Search in Google Scholar
R Core Team. R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. ISBN 3-900051-07-0, URL: http://www.r-project.org/Search in Google Scholar
Rojas G., Posadas A., Quiroz R., Holle M., Málaga M., Secado parcial de las raíces: una promisoria técnica de riego en papa (Solanum tuberosum L.). Zonas Áridas, 2007, 11(1), 206-218, (in Spanish)Search in Google Scholar
Saffaf A.Y., Selection of appropriate irrigation methods for semi-arid regions. In: Johl, S.S. Irrigation and agricultural development. Unit Nations- Pergamon Press, Great Britain, 198010.1016/B978-0-08-025675-7.50013-3Search in Google Scholar
Scott R.J., Knott M. 1974. A cluster analysis method for grouping mans in the analysis of variance. Biometrics, 30, 507-51210.2307/2529204Search in Google Scholar
Shahnazari A., Liu F.L., Andersen M.N., Jacobsen S.E., Jensen C.R., Effects of partial root-zone drying on yield, tuber size and water use efficiency in potato under field conditions. Field Crop Res. 2007, 100, 117-12410.1016/j.fcr.2006.05.010Search in Google Scholar
Shahnazari A., Ahmadi S.H., Laerke P.E., Liu F., Plauborg F., Jacobsen S.E., et al., Nitrogen dynamics in the soil-plant system under deficit and partial root-zone drying irrigation strategies in potatoes. Eur. J. Agron., 2008, 28(2), 65-7310.1016/j.eja.2007.05.003Search in Google Scholar
Xie K., Wang X.-X., Zhang R., Gong X., Zhang S., Mares V. et al., Partial root-zone drying irrigation and water utilization Efficiency by the potato crop in semi-arid regions in China, Sci. Hortic, 2012, 134, 20-2510.1016/j.scienta.2011.11.034Search in Google Scholar
Yactayo W., Ramírez D.A., Gutiérrez R., Mares V., Posadas A., Quiroz R, Effect of partial root-zone drying irrigation timing on potato tuber yield and water use efficiency. Agr. Water. Manage, 2013, 123, 65-7010.1016/j.agwat.2013.03.009Search in Google Scholar
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