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Impact of Soil Ameliorants on Soil Chemical Characteristics, Sugar Beet Water Productivity, and Yield Components in Sandy Soils Under Deficit Irrigation

Author

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  • Sahar M. Ismail

    (Soil Chemistry and Physics Department, Desert Research Center, El-Mathaf St., El-Matreia, Cairo 11511, Egypt)

  • Nourah Almulhim

    (Department of Chemistry, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia)

  • Azza Sedky

    (Department of Zoology, Faculty of Science, Alexandria University, Alexandria 21321, Egypt)

  • Salah Abdel-Nabi El-Cossy

    (Soil Conservation Department, Water Resources and Desert Soils Division, Desert Research Center, 1 El-Mathaf St., El-Matreia, Cairo 4540031, Egypt)

  • Esawy Mahmoud

    (Department of Soil and Water Science, Faculty of Agriculture, Tanta University, Tanta 31111, Egypt)

Abstract

In many sustainable agricultural systems, combining soil ameliorants with deficit irrigation is a viable strategy. However, little is known about how this approach affects soil quality, crop water productivity (CWP), and sugar beet ( Beta vulgaris L.) yield in sandy soils. This study investigates the effects of different soil ameliorants―potassium polyacrylate (PPA), polyacrylamide (PAM), and humus (HA)―on the soil chemical properties, water productivity, and sugar beet yield under three irrigation regimes (100%, 80%, and 50% of crop water requirement (CWR). The results demonstrated that applying these amendments signficantly enhances soil pH, cation exchange capacity (CEC), organic matter (OM), and the availability of essential nutrients (N, P, and K). Notably, the combination of PAM and HA under 50% CWR resulted in the highest improvements in sugar beet biomass, increasing shoot and root growth by 73.43% and 71.68%, respectively. It also led to a 97.91% increase in sugar yield and a 4.22% improvement in sugar quality. However, this treatment had the lowest economic benefit, with a negative outcome. In contrast, PAM treatment under 50% CWR produced a 61.49% increase in sugar yield and a 2.44% improvement in sugar quality, ensuring economic viability. These findings suggest that the use of PAM under reduced irrigation conditions can optimize water use efficiency and sustain crop productivity in sandy soils.

Suggested Citation

  • Sahar M. Ismail & Nourah Almulhim & Azza Sedky & Salah Abdel-Nabi El-Cossy & Esawy Mahmoud, 2025. "Impact of Soil Ameliorants on Soil Chemical Characteristics, Sugar Beet Water Productivity, and Yield Components in Sandy Soils Under Deficit Irrigation," Sustainability, MDPI, vol. 17(4), pages 1-20, February.
    • Handle: RePEc:gam:jsusta:v:17:y:2025:i:4:p:1513-:d:1589485
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    References listed on IDEAS

    as
    1. Kai Yang & Zejun Tang & Jianzhang Feng, 2021. "Coal Fly Ash and Polyacrylamide Influence Transport and Redistribution of Soil Nitrogen in a Sandy Sloping Land," Agriculture, MDPI, vol. 11(1), pages 1-15, January.
    2. Xin Zhang & Jianheng Zhang & Liwei Li & Yang Liu & Wenchao Zhen & Guiyan Wang, 2024. "Interaction Effects of Water and Nitrogen Practices on Wheat Yield, Water and Nitrogen Productivity under Drip Fertigation in Northern China," Agriculture, MDPI, vol. 14(9), pages 1-19, September.
    3. J. Akhter & K. Mahmood & K.A. Malik & A. Mardan & M. Ahmad & M.M. Iqbal, 2004. "Effects of hydrogel amendment on water storage of sandy loam and loam soils and seedling growth of barley, wheat and chickpea," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 50(10), pages 463-469.
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