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Double Coating as a Novel Technology for Controlling Urea Dissolution in Soil: A Step toward Improving the Sustainability of Nitrogen Fertilization Approaches

Author

Listed:
  • Ayman El-Ghamry

    (Soils Department, Faculty of Agriculture, Mansoura University, Mansoura 35516, Egypt)

  • El-Sayed El-Naggar

    (Fertilizers Development Center, El-Delta Fertilizers Plant, Talkha 35681, Egypt)

  • Abdallah M. Elgorban

    (Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia)

  • Bin Gao

    (Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, USA)

  • Zahoor Ahmad

    (Department of Soil and Climate Sciences, Faculty of Agricultural Sciences, The University of Haripur, Haripur 22620, Pakistan)

  • Ahmed Mosa

    (Soils Department, Faculty of Agriculture, Mansoura University, Mansoura 35516, Egypt)

Abstract

This research introduces a novel technology for reducing ordinary urea (OU) dissolution by developing double-coated urea (DCU) using phosphate rock (PR) as an outer layer to reduce its hydrolysis and sodium thiosulfate (STS) as an inner layer to inhibit the urease enzyme and nitrification process. Due to the double coating, the nitrogen content of DCU was lower than that of the OU (36.7% vs. 46.5%). The ultramorphological analysis using scanning electron microscopy (SEM) indicated that the controlled coating of urea, resulting from the outer layer of PR, was due to the adhesive effect of urea formaldehyde (UF), which was used as a glue. In addition, the transmission electron microscopy (TEM) analysis of the DCU revealed its high degree of agglomeration. The mechanical hardness of DCU was higher compared to that of OU (1.38 vs. 1.08 kgf). The seven-day dissolution rate test showed that OU reached 100% dissolution on the fifth day. The rate of DCU, however, was significantly lower (32% dissolution in the seventh day). Cumulative NO 3 − and NH 4 + losses from a clay soil sample reached 68.3% and 7.6%, respectively, with OU measuring 40.5% compared to 4.9% for DCU 70 days after application. Field experiments showed a significant improvement in the marketable yield and agronomic nitrogen efficiency (ANE) of maize grains and zucchini fruits fertilized with DCU. Furthermore, the macro and micronutrient concentrations in maize grains and zucchini fruits showed an increase in the plants fertilized with DCU. In summary, double coating can be introduced as a novel technique to control urea dissolution in soil.

Suggested Citation

  • Ayman El-Ghamry & El-Sayed El-Naggar & Abdallah M. Elgorban & Bin Gao & Zahoor Ahmad & Ahmed Mosa, 2021. "Double Coating as a Novel Technology for Controlling Urea Dissolution in Soil: A Step toward Improving the Sustainability of Nitrogen Fertilization Approaches," Sustainability, MDPI, vol. 13(19), pages 1-13, September.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:19:p:10707-:d:643933
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    References listed on IDEAS

    as
    1. Bilal Beig & Muhammad Bilal Khan Niazi & Zaib Jahan & Erum Pervaiz & Ghulam Abbas Shah & Midrar Ul Haq & Mazhar Iqbal Zafar & Munir Zia, 2020. "Slow-Release Urea Prills Developed Using Organic and Inorganic Blends in Fluidized Bed Coater and Their Effect on Spinach Productivity," Sustainability, MDPI, vol. 12(15), pages 1-16, July.
    2. Ahmmed Md Motasim & Abd Wahid Samsuri & Arina Shairah Abdul Sukor & Amin Mohd Adibah, 2021. "Gaseous Nitrogen Losses from Tropical Soils with Liquid or Granular Urea Fertilizer Application," Sustainability, MDPI, vol. 13(6), pages 1-11, March.
    3. Farahat S. Moghanm & Antar El-Banna & Mohamed A. El-Esawi & Mohamed M. Abdel-Daim & Ahmed Mosa & Khaled A.A. Abdelaal, 2020. "Genotoxic and Anatomical Deteriorations Associated with Potentially Toxic Elements Accumulation in Water Hyacinth Grown in Drainage Water Resources," Sustainability, MDPI, vol. 12(5), pages 1-16, March.
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