Bioaccumulation of Potentially Toxic Elements in Lettuce and Soil Fertility Treated with Biosolid

Gonçalves, Paula Wellen Barbosa; Costa, Cândido Alves da; Cardoso, Paulo Henrique Silveira; Pegoraro, Rodinei Facco; Cardoso, Gilmar Rodrigues; Versiani, Luis César Freire

doi:10.1007/s42729-021-00693-9

Cited by 2 publications

(1 citation statement)

References 33 publications

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“…The order of treatments regarding the root biomass yield was AcD > AcBc > AcB > AcIFX > AcV > AcC > AcIF > AcL. The beneficial effect of treated sludge with the clay minerals or biochar on the yield of white clover was attributed to the improvement in the soil's physical and chemical properties due to the supply of soils with organic matter and nutrients, as was also reported in studies with crops other than white clover [45,46]. Moreover, the slight increase in the pH (>5.0) of acid soil upon the addition of the aforementioned treated sludge cannot be excluded as a beneficial factor, which resulted in the better growth and, consequently, the obtained (positive) response of white clover plants to the particular treatments.…”

Section: Effect Of Treated Sludge On Yield Composition and Nutrient U...supporting

confidence: 58%

Soil Application of Sewage Sludge Treated with Clay Minerals or Biochar and Its Effect on Soil Properties and White Clover’s (Trifolium repens L.) Growth and Arbuscular Mycorrhizal Fungal Root Colonization

2022

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From the perspective of finding new, more environmental-friendly methods for the stabilization of sewage sludge to be used in agriculture, sludge treated with 15% bentonite, vermiculite or biochar was investigated as a soil amendment for white clover (Trifolium repens L.) growth, by means of a pot experiment. The sludge treatments, which were applied to two soils (an acid and an alkaline soil), in three replications, were the addition of 2% (≈80 Mg ha−1) treated sludge with the clay minerals or biochar, as well as limed or untreated (air-dried) sludge (for comparison reasons). Additional treatments with inorganic fertilization or neither organic nor inorganic fertilization (control) were also included. The application of 2% sludge to both soils significantly increased salinity compared to the control, which remained below harmful levels for sensitive crops, except for the case of untreated sludge. Furthermore, it significantly increased the soil-available macronutrients N, P and K, and micronutrients Cu, Zn (several times, especially in the case of untreated sludge) and B (up to three times) compared with the control. Moreover, the pH of the acid soil was improved, except for the case of limed sludge, where an undesirable pH increase close to 8.5 was observed. Addition of the treated sludge with the clay minerals or biochar and untreated sludge to the acid and alkaline soil significantly increased the aboveground biomass yield of white clover by 117–233% and 114–153%, respectively, compared to the control, whereas limed sludge had no effect. Plant nutrient uptake increased as well. In general, the effect of sludge on soil microbiological properties and arbuscular mycorrhizal fungal root colonization was ambiguous. It was concluded that 2% soil addition of sewage sludge treated with 15% bentonite, vermiculite or biochar could improve soil fertility and enhance plant growth; however, caution is needed with respect to potential risks of soil salinization or Zn and B phytotoxicities.

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Section: Effect Of Treated Sludge On Yield Composition and Nutrient U...supporting

confidence: 58%

Soil Application of Sewage Sludge Treated with Clay Minerals or Biochar and Its Effect on Soil Properties and White Clover’s (Trifolium repens L.) Growth and Arbuscular Mycorrhizal Fungal Root Colonization

2022

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Sewage Sludge Stabilized with Clay Minerals: Its Impact on Soil Properties and Ryegrass Growth

Samara

Ipsilantis

Barbayiannis

2022

J Soil Sci Plant Nutr

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Bioaccumulation of Potentially Toxic Elements in Lettuce and Soil Fertility Treated with Biosolid

Cited by 2 publications

References 33 publications

Soil Application of Sewage Sludge Treated with Clay Minerals or Biochar and Its Effect on Soil Properties and White Clover’s (Trifolium repens L.) Growth and Arbuscular Mycorrhizal Fungal Root Colonization

Soil Application of Sewage Sludge Treated with Clay Minerals or Biochar and Its Effect on Soil Properties and White Clover’s (Trifolium repens L.) Growth and Arbuscular Mycorrhizal Fungal Root Colonization

Sewage Sludge Stabilized with Clay Minerals: Its Impact on Soil Properties and Ryegrass Growth

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