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Yield, water productivity and nutrient balances under different water management technologies of irrigated wheat in Ethiopia

Author

Listed:
  • Tiruye, A. E.
  • Belay, S. A.
  • Schmitter, Petra

    (International Water Management Institute)

  • Tegegne, Desalegn

    (International Water Management Institute)

  • Zimale, F. A.
  • Tilahun, S. A.

Abstract

Development of irrigation technologies and agricultural water management systems holds significant potential to improve productivity and reduce vulnerability to climate change. Our study dealt with the behavior of irrigation water productivity, partial nutrient balance and grain yield of wheat under the application of different irrigation water management technologies in the Koga irrigation scheme in Ethiopia. For our analysis, we considered three nutrient fluxes entering and leaving farmers’ fields. Our experimental design had three irrigation blocks with three different irrigation water management practices (wetting front detector, Chameleon soil moisture sensor and farmers’ practice as control) on three farm plots replicated in each block. To calculate irrigation water productivity and grain yield of wheat, the amount of irrigation water applied and the agronomic attributes of wheat yield were recorded during the irrigation period. Further, three input and output variables were considered to determine the partial nutrient balances of nitrogen (N), phosphorus (P) and potassium (K). The results showed that the amount of irrigation water used was 33% and 22% less with a wetting front detector and Chameleon sensors, respectively, compared to the farmers’ practice. The wetting front detector (WFD) and Chameleon sensor (CHS) treatments gave a 20% and 15.8% grain yield increment, respectively, compared to the farmers’ practice plot. The partial nutrient balances of N and K were negative for the wetting front detector and chameleon sensor practices while it was positive for P in the control (farmers’ practice) treatment. We conclude that irrigation water management with appropriate technologies can improve yield, water productivity and the nutrient utilization. However, further research needs to be conducted on the suitability of irrigation management technologies to achieve full nutrient balance.

Suggested Citation

  • Tiruye, A. E. & Belay, S. A. & Schmitter, Petra & Tegegne, Desalegn & Zimale, F. A. & Tilahun, S. A., 2023. "Yield, water productivity and nutrient balances under different water management technologies of irrigated wheat in Ethiopia," Papers published in Journals (Open Access), International Water Management Institute, pages 1-1(12):000.
    • Handle: RePEc:iwt:jounls:h051887
    DOI: 10.1371/journal.pwat.0000060
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    References listed on IDEAS

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    1. Iglesias, Ana & Garrote, Luis, 2015. "Adaptation strategies for agricultural water management under climate change in Europe," Agricultural Water Management, Elsevier, vol. 155(C), pages 113-124.
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