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Effects of Combined Applications of Biogas Slurry and Biochar on Phosphorus Leaching and Fractionations in Lateritic Soil

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Listed:
  • Bangxi Zhang

    (Soil and Fertilizer Research Institute, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China)

  • Rongxiu Yin

    (Tea Research Institute, Guizhou Provincial Academy of Agricultural Sciences, Guiyang 550006, China)

  • Quanquan Wei

    (Soil and Fertilizer Research Institute, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China)

  • Song Qin

    (Soil and Fertilizer Research Institute, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China)

  • Yutao Peng

    (School of Agriculture, Sun Yat-sen University, Shenzhen 518107, China)

  • Baige Zhang

    (Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China)

Abstract

Diverse soil phosphorus (P)-leaching phenomena induced by environmental disturbance have gained increasing attention. Two kinds of typical organic materials, biochar and biogas slurry, (BS) are widely utilized to amend agricultural soil, but there is little research that gives insight into their co-effects on soil P-leaching and corresponding mechanisms. Herein, a total of six treatments (viz., control, 2% ( w / w ) biochar, low ratio BS with or without 2% ( w / w ) biochar, high ratio BS with or without 2% ( w / w ) biochar) were conducted to investigate the P-leaching and fraction transformation mechanisms. The column experiment results showed that compared to control, sole BS application or biochar both can slightly enhance the soil-P loss by 134.8% and 39.8%. High ratios of BS induced higher P loss than the low ratios of BS by 125.1%. In comparison with the sole BS treatment, combined BS and biochar application increase P loss but result in less soil leaching of basic cations. The incubation experiment results showed that the enhanced P-leaching in combined BS and biochar treatment is probably attributable to the enhanced soil pH, decreased DPS, soil P adsorption capacity, and transformation of moderately labile Fe–P into labile P. This research helps in understanding the abiotic process of biochar and BS in promoting soil P-leaching and soil-P management using biochar and biogas slurry.

Suggested Citation

  • Bangxi Zhang & Rongxiu Yin & Quanquan Wei & Song Qin & Yutao Peng & Baige Zhang, 2022. "Effects of Combined Applications of Biogas Slurry and Biochar on Phosphorus Leaching and Fractionations in Lateritic Soil," Sustainability, MDPI, vol. 14(13), pages 1-10, June.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:13:p:7924-:d:851372
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    References listed on IDEAS

    as
    1. Du, Huiying & Gao, Wenxuan & Li, Jiajia & Shen, Shizhou & Wang, Feng & Fu, Li & Zhang, Keqiang, 2019. "Effects of digested biogas slurry applicationmixed with irrigation water on nitrate leaching during wheat-maize rotation in the North China Plain," Agricultural Water Management, Elsevier, vol. 213(C), pages 882-893.
    2. Bangxi Zhang & Tianhong Fu & Chung-Yu Guan & Shihao Cui & Beibei Fan & Yi Tan & Wenhai Luo & Quanquan Wei & Guoxue Li & Yutao Peng, 2022. "Environmental Life Cycle Assessments of Chicken Manure Compost Using Tobacco Residue, Mushroom Bran, and Biochar as Additives," Sustainability, MDPI, vol. 14(9), pages 1-10, April.
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