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Deficit irrigation effects on yield and yield components of grain sorghum

Author

Listed:
  • Bell, Jourdan M.
  • Schwartz, Robert
  • McInnes, Kevin J.
  • Howell, Terry
  • Morgan, Cristine L.S.

Abstract

Development of sustainable and efficient irrigation strategies is a priority for producers faced with water shortages. A promising management strategy for improving water use efficiency (WUE) is managed deficit irrigation (MDI), which attempts to optimize yield and WUE by synchronizing crop water use with the crop’s reproductive stages. In comparison, deficit irrigation (DI) is applied at a fraction of the full (FI) irrigation requirement. Soil water use and grain yield of grain sorghum [Sorghum bicolor (L.) Moench] were evaluated in the High Plains of Texas, USA under three irrigation strategies: FI, DI, and MDI from 2010 to 2012. Grain yields of FI sorghum averaged 3.7 Mg ha−1 greater (p < 0.001) than DI sorghum in all years. However, MDI yields averaged 1.6 Mg ha−1 more than DI yields, which was significant in 2010 and 2012 (p ≤ 0.006). The WUE of FI sorghum was significantly greater than MDI in 2012 (p = 0.003) and DI in 2010 and 2012 (p ≤ 0.001) demonstrating that limiting water did not reduce WUE in two of the three years. Results suggest that WUE’s of grain sorghum are not compromised under MDI compared with FI in most cropping seasons. While FI provides the greatest opportunity to reduce production risks through increased yield, if irrigation water is limiting, MDI provides less risk than DI due to its ability to maintain yield and WUE. Yield was stabilized in all years by increasing seed panicle−1 under MDI, which was supportive of concentrating irrigation water between growing point differentiation and half bloom to maintain ovules.

Suggested Citation

  • Bell, Jourdan M. & Schwartz, Robert & McInnes, Kevin J. & Howell, Terry & Morgan, Cristine L.S., 2018. "Deficit irrigation effects on yield and yield components of grain sorghum," Agricultural Water Management, Elsevier, vol. 203(C), pages 289-296.
    • Handle: RePEc:eee:agiwat:v:203:y:2018:i:c:p:289-296
    DOI: 10.1016/j.agwat.2018.03.002
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    Citations

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    Cited by:

    1. Santos, Lucas C. & Coelho, Rubens D. & Barbosa, Fernando S. & Leal, Daniel P.V. & Fraga Júnior, Eusímio F. & Barros, Timóteo H.S. & Lizcano, Jonathan V. & Ribeiro, Nathália L., 2019. "Influence of deficit irrigation on accumulation and partitioning of sugarcane biomass under drip irrigation in commercial varieties," Agricultural Water Management, Elsevier, vol. 221(C), pages 322-333.
    2. Domínguez, Alfonso & Schwartz, Robert C. & Pardo, José J. & Guerrero, Bridget & Bell, Jourdan M. & Colaizzi, Paul D. & Louis Baumhardt, R., 2022. "Center pivot irrigation capacity effects on maize yield and profitability in the Texas High Plains," Agricultural Water Management, Elsevier, vol. 261(C).
    3. Li, Qingming & Wei, Min & Li, Yiman & Feng, Gaili & Wang, Yaping & Li, Shuhao & Zhang, Dalong, 2019. "Effects of soil moisture on water transport, photosynthetic carbon gain and water use efficiency in tomato are influenced by evaporative demand," Agricultural Water Management, Elsevier, vol. 226(C).
    4. Zhang, Ling & Ma, Qimin & Zhao, Yanbo & Wu, Xiaobo & Yu, Wenjun, 2019. "Determining the influence of irrigation efficiency improvement on water use and consumption by conceptually considering hydrological pathways," Agricultural Water Management, Elsevier, vol. 213(C), pages 674-681.
    5. Agossou Gadedjisso-Tossou & Tamara Avellán & Niels Schütze, 2019. "An Economic-Based Evaluation of Maize Production under Deficit and Supplemental Irrigation for Smallholder Farmers in Northern Togo, West Africa," Resources, MDPI, vol. 8(4), pages 1-11, November.
    6. Liao, Renkuan & Zhang, Shirui & Zhang, Xin & Wang, Mingfei & Wu, Huarui & Zhangzhong, Lili, 2021. "Development of smart irrigation systems based on real-time soil moisture data in a greenhouse: Proof of concept," Agricultural Water Management, Elsevier, vol. 245(C).
    7. Allakonon, M. Gloriose B. & Zakari, Sissou & Tovihoudji, Pierre G. & Fatondji, A. Sènami & Akponikpè, P.B. Irénikatché, 2022. "Grain yield, actual evapotranspiration and water productivity responses of maize crop to deficit irrigation: A global meta-analysis," Agricultural Water Management, Elsevier, vol. 270(C).
    8. Bell, Jourdan M. & Schwartz, Robert C. & McInnes, Kevin J. & Howell, Terry A. & Morgan, Cristine L.S., 2020. "Effects of irrigation level and timing on profile soil water use by grain sorghum," Agricultural Water Management, Elsevier, vol. 232(C).

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