Effects of three biochars on copper immobilization and soil microbial communities in a metal-contaminated soil using a metallophyte and two agricultural plants

Meier, Sebastián; Moore, Francisca; González, María-Eugenia; Medina, Jorge; Campos, Pedro Martínez; Khan, N.; Cumming, Jonathan R.; Sanhueza, Mario I.; Mejías, Jaime; Morales, Arturo; Hirzel, Juan; Seguel, Alex

doi:10.1007/s10653-019-00436-x

Cited by 14 publications

(6 citation statements)

References 40 publications

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“…Upon application to the soil, biochar improves soil fertility and crop productivity by increasing the soil nutrient contents and the mobility of nutrients. It enhances microbial activity (Meier et al 2019), improves aeration and water retention (Kambo and Dutta 2015;Razzaghi et al 2020), buffers soil reactions (Laghari et al 2016), reduces bulk density (Yan et al 2019a), and maintains soil aggregate structure (Zhang et al 2020). Moreover, biochar reduces nutrient leaching and loss of nutrients by volatilization through altering the soil pH and by enhancing the ion exchange capacity (DeLuca et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Biochar and its importance on nutrient dynamics in soil and plant

Hossain

Bahar

Sarkar

et al. 2020

Biochar

434

125

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Biochar, an environmentally friendly soil conditioner, is produced using several thermochemical processes. It has unique characteristics like high surface area, porosity, and surface charges. This paper reviews the fertilizer value of biochar, and its effects on soil properties, and nutrient use efficiency of crops. Biochar serves as an important source of plant nutrients, especially nitrogen in biochar produced from manures and wastes at low temperature (≤ 400 °C). The phosphorus, potassium, and other nutrient contents are higher in manure/waste biochars than those in crop residues and woody biochars. The nutrient contents and pH of biochar are positively correlated with pyrolysis temperature, except for nitrogen content. Biochar improves the nutrient retention capacity of soil, which depends on porosity and surface charge of biochar. Biochar increases nitrogen retention in soil by reducing leaching and gaseous loss, and also increases phosphorus availability by decreasing the leaching process in soil. However, for potassium and other nutrients, biochar shows inconsistent (positive and negative) impacts on soil. After addition of biochar, porosity, aggregate stability, and amount of water held in soil increase and bulk density decreases. Mostly, biochar increases soil pH and, thus, influences nutrient availability for plants. Biochar also alters soil biological properties by increasing microbial populations, enzyme activity, soil respiration, and microbial biomass. Finally, nutrient use efficiency and nutrient uptake improve with the application of biochar to soil. Thus, biochar can be a potential nutrient reservoir for plants and a good amendment to improve soil properties.

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Section: Introductionmentioning

confidence: 99%

Biochar and its importance on nutrient dynamics in soil and plant

Hossain

Bahar

Sarkar

et al. 2020

Biochar

434

125

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“…2007, Laird 2008, Meier et al 2019. For instance, biochar significantly improved soil nutrient availability to plants and plant productivity in highly weathered soils (Glaser et al 2002).…”

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confidence: 99%

“…The application of biochar in the Mediterranean region had been considered as a promising way to improve soil quality and health (Teutscherova et al 2018). The biochar addition in a metal-contaminated soil increased soil pH and SOC, improved habitats for microorganisms, and enhanced plant growth and biomass production (Meier et al 2019). Biochar also increased SOC, available phosphorus and potassium, and alkaline hydrolysed nitrogen in red acid soil, though the effects of biochar on soil properties varied with biochar and soil characteristics (Zhang et al 2013).…”

mentioning

confidence: 99%

Effects of biochar additions on the soil chemical properties, bacterial community structure and rape growth in an acid purple soil

Li¹,

Li²,

Xu³

et al. 2021

Plant Soil Environ.

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Biochar is considered as a universal conditioner to improve soil quality, but its effects of different addition rates on soil properties, bacterial community structure and plant growth are still unclear, particularly in the typical acid purple soil in the southwest of China. In this study, 110 days of rape growth pot experiment under the application rate of 0.0% rice husk biochar (CK), 0.8% (CT1), 2.0% (CT2) and 4.0% (CT3) to the acid purple soil. Results showed that all biochar additions improved soil pH, soil organic carbon (SOC), total phosphorus, available phosphorus, available potassium concentrations in the acid purple soil. The activity of both invertase and catalase, not urease, was significantly increased with the increasing of biochar addition rates. The 16s-gene sequencing results showed that the Chao1 index was increased only under CT3, and the Shannon index was increased after all biochar applications. Furthermore, biochar increased the relative abundance of bacteria that play important roles in soil carbon and nitrogen cycles, SOC decomposition, plant diseases control and growth. The plant height and biomass production of rapes were increased under the low biochar level (CT1), but not under the higher rates of CT2 and CT3. These results demonstrated that biochar, as a soil conditioner to the acid purple soil, could increase soil pH value, SOC, available phosphorus and potassium and affect carbon and nitrogen cycles related to bacterial communities for promoting plant performance under low application rate.

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“…Cr(VI) was widespread use in some industries, such as leather manufacturing and stainless steel production; inevitable leakage through industrial wastewater leads to soil pollution, which further affects the soil environment (13). Soil microbial communities improve soil quality (14,15). The diversity of soil microbial communities is related to soil properties (16).…”

Section: Introductionmentioning

confidence: 99%

“…Soil microbial communities improve soil quality ( 14 , 15 ). The diversity of soil microbial communities is related to soil properties ( 16 ).…”

Section: Introductionmentioning

confidence: 99%

Changes in the bacterial communities in chromium-contaminated soils

et al. 2023

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IntroductionHexavalent chromium or Cr(VI) is essential to various industries, such as leather manufacturing and stainless steel production. Given that inevitable leakage from industries pollutes the soil and thereby affects the soil environment. Microbial communities could improve the quality of the soil. Abundant bacterial communities would significantly enhance the soil richness and resist external pressure, benefiting agriculture. But the pollution of heavy metal broke the balance and decrease the abundance of bacterial communities, which weak the self-adjust ability of soil. This study aimed to explore changes in the diversity of soil bacterial communities and to identify the influences of soil bacterial communities on enzymes in soil polluted by Cr(VI).MethodsThe target soils were sampled quickly and aseptically. Their chromium content was detected through inductively coupled plasma-mass spectrometry, and bacterial microbiome communities were explored through MiSeq high-throughput sequencing. Then, the content of nitrite reductase and catalases were investigated through enzyme-linked immunosorbent assay (ELISA).ResultsChromium content in polluted soils was higher than that in the control soils at all depths. Sobs, Chao1, Ace, and Shannon diversity estimators in the control were higher, whereas Simpson's diversity estimators in the control soils were lower than those of contaminated samples at all depths. Contaminants affected the composition of the bacterial community. The soil microbial species were relatively single and inhomogeneous in the polluted soils. The bacterial phyla in polluted and controlled soils include Proteobacteria, Actinobacteria, Chloroflexi, and Acidobacteria, which differ markedly in abundance.DiscussionThe results of these observations provide insights into the ecotoxicological effects of Cr(VI) exposure to soil microorganisms. To sum up these results are critical for evaluating the stabilized state of microbial community structures, contributing to the assessment of the potential risk of metal accumulation in soils.

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Effects of three biochars on copper immobilization and soil microbial communities in a metal-contaminated soil using a metallophyte and two agricultural plants

Cited by 14 publications

References 40 publications

Biochar and its importance on nutrient dynamics in soil and plant

Biochar and its importance on nutrient dynamics in soil and plant

Effects of biochar additions on the soil chemical properties, bacterial community structure and rape growth in an acid purple soil

Changes in the bacterial communities in chromium-contaminated soils

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