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Improving Phosphorus Availability and Wheat Yield in Saline Soil of the Lake Urmia Basin through Enriched Biochar and Microbial Inoculation

Author

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  • Roghayeh Mousavi

    (Department of Soil Science, Faculty of Agriculture, Urmia University, Urmia 5756151818, Iran)

  • MirHassan Rasouli-Sadaghiani

    (Department of Soil Science, Faculty of Agriculture, Urmia University, Urmia 5756151818, Iran)

  • Ebrahim Sepehr

    (Department of Soil Science, Faculty of Agriculture, Urmia University, Urmia 5756151818, Iran)

  • Mohsen Barin

    (Department of Soil Science, Faculty of Agriculture, Urmia University, Urmia 5756151818, Iran)

  • Ramesh Raju Vetukuri

    (Department of Plant Breeding, Swedish University of Agricultural Sciences, SE-234 22 Lomma, Sweden)

Abstract

To reduce requirements for conventional chemical fertilizer and alleviate salinity stress in soils, a glasshouse experiment was conducted to assess the effects of enriched biochar on phosphatase activity, microbial respiration and wheat yield in non-saline and saline soils from the Lake Urmia basin (electrical conductivities 2 dS.m −1 and 15 dS.m −1 , respectively). Nine treatments were tested: control, 1:1 mixture of apple and grape biochars (BC), phosphate solubilizing bacteria (PSB), BC plus PSB (BC-PSB), BC plus rock phosphate (BC-RP), BC enriched by rock phosphate and bacteria (BC-RP-PSB), BC enriched by rock phosphate and HCl (BC-RP-HCl) or H 3 PO 4 (BC-RP-H 3 PO 4 ) and chemical fertilizer (TSP). The addition of enriched biochar decreased the soil pH (by 0.5–0.9 units) and increased available phosphorus (>7-fold). In both the saline and non-saline soils, the highest alkaline phosphatase activity was obtained for BC-H 3 PO 4 -RP and BC-HCl-RP. Wheat growth parameters were reclaimed after enriched biochar application, indicating superior dry matter yields compared to the control and non-enriched biochar treatments and significantly higher yields compared to TSP. Beneficial effects on soil pH, phosphatase activity, soil respiration and biomass yield demonstrated that enriched biochar could partly substitute chemical fertilizers and increase plant growth in salt stress conditions. However, further field studies are needed to understand the benefits of enriched biochar in different soils and climates.

Suggested Citation

  • Roghayeh Mousavi & MirHassan Rasouli-Sadaghiani & Ebrahim Sepehr & Mohsen Barin & Ramesh Raju Vetukuri, 2023. "Improving Phosphorus Availability and Wheat Yield in Saline Soil of the Lake Urmia Basin through Enriched Biochar and Microbial Inoculation," Agriculture, MDPI, vol. 13(4), pages 1-16, March.
    • Handle: RePEc:gam:jagris:v:13:y:2023:i:4:p:805-:d:1112680
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    References listed on IDEAS

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    1. Farman Wali & Shahid Sardar & Muhammad Naveed & Muhammad Asif & Mohammad Tahsin Karimi Nezhad & Khurram Shehzad Baig & Mohsin Bashir & Adnan Mustafa, 2022. "Effect of Consecutive Application of Phosphorus-Enriched Biochar with Different Levels of P on Growth Performance of Maize for Two Successive Growing Seasons," Sustainability, MDPI, vol. 14(4), pages 1-17, February.
    2. Mahmoud El-Sharkawy & Ahmed H. El-Naggar & Arwa Abdulkreem AL-Huqail & Adel M. Ghoneim, 2022. "Acid-Modified Biochar Impacts on Soil Properties and Biochemical Characteristics of Crops Grown in Saline-Sodic Soils," Sustainability, MDPI, vol. 14(13), pages 1-21, July.
    3. Shi-Xiang Zhao & Na Ta & Xu-Dong Wang, 2017. "Effect of Temperature on the Structural and Physicochemical Properties of Biochar with Apple Tree Branches as Feedstock Material," Energies, MDPI, vol. 10(9), pages 1-15, August.
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