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Benefits of Corn-Cob Biochar to the Microbial and Enzymatic Activity of Soybean Plants Grown in Soils Contaminated with Heavy Metals

Author

Listed:
  • Samir A. Haddad

    (Agricultural Microbiology Department, Faculty of Agriculture, Minia University, El-Minia 61517, Egypt)

  • Joanna Lemanowicz

    (Department of Biogeochemistry and Soil Science, Faculty of Agriculture and Biotechnology, Bydgoszcz University of Science and Technology, Bernardyńska 6 St., 85-029 Bydgoszcz, Poland)

Abstract

Synchronous effects of biochar on heavy metals stress, microbial activity and nodulation process in the soil are rarely addressed. This work studied the effects, under greenhouse conditions, of selected heavy metals Cd 2+ , Pb 2+ and Ni 2+ on soybean plants grown in two different soils amended with biochar, and studied their effect on the microbial and enzymatic activity. As a result of the interference between heavy metals and biochar, biochar overcame heavy metal problems and maintained a microbial population of major groups (bacteria–fungi). There was an increase in the degree of resistance ( RS ) of the major microbial groups to heavy metals when biochar was added to the soil under study. Numbers of bacterial nodules significantly increased, particularly by using the higher rate of biochar compared to the control, either by adding biochar alone or by mixing it with the selected heavy metals. The arginase activity was increased by 25.5% and 37.1% in clay and sandy soil, respectively, compared to the control. For urease (UR), the activity was increased by 105% and 83.8% in clay and sandy soil, respectively, compared to the control. As a result, considerations of using biochar as a soil amendment should be first priority.

Suggested Citation

  • Samir A. Haddad & Joanna Lemanowicz, 2021. "Benefits of Corn-Cob Biochar to the Microbial and Enzymatic Activity of Soybean Plants Grown in Soils Contaminated with Heavy Metals," Energies, MDPI, vol. 14(18), pages 1-14, September.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:18:p:5763-:d:634474
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    Citations

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    Cited by:

    1. Mohieyeddin M. Abd El-Azeim & Ahmad M. Menesi & Mahmoud M. Abd El-Mageed & Joanna Lemanowicz & Samir A. Haddad, 2022. "Wheat Crop Yield and Changes in Soil Biological and Heavy Metals Status in a Sandy Soil Amended with Biochar and Irrigated with Drainage Water," Agriculture, MDPI, vol. 12(10), pages 1-19, October.
    2. Samir A. Haddad & Hossam Abdelmageed & Abdelaziz Saleh & Samia Ahmed & Mohieyeddin M. Abd El-Azeim & Joanna Lemanowicz & Gaber E. Eldesoky & Omar Saad, 2023. "Response of Cellulose Decomposition and Nodulation in Soils Amended with Biochar for Peri-Urban Agriculture," Sustainability, MDPI, vol. 15(13), pages 1-18, June.
    3. Yang Wei & Risheng Li & Nan Lu & Baoqiang Zhang, 2022. "Stabilization of Soil Co-Contaminated with Mercury and Arsenic by Different Types of Biochar," Sustainability, MDPI, vol. 14(20), pages 1-16, October.

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