The effects of organic amendments on heavy metals bioavailability in mine impacted soil and associated human health risk

Alam, Muhd Nazrul Hisham Zainal; Hussain, Zawar; Khan, Anwarzeb; Khan, Muhammad Amjad; Rab, Abdur; Asif, Muhammad Bilal; Shah, Maqsood; Muhammad, Asim

doi:10.1016/j.scienta.2019.109067

Cited by 66 publications

(33 citation statements)

References 40 publications

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“…Functional groups, such as amino groups (–NH 2 ), hydroxyl groups (–OH), and carbonyl groups (–COOH), of OM can form complexes with TMs and thus, decrease the availability of TMs and their uptake by plants [ 27 , 29 , 60 , 61 , 62 ]. Similar results were reported by previous studies [ 63 , 64 ], which revealed that the application of organic amendment could decrease the availability of Cd and thus, its accumulation in potato and radish plants ( Raphanus sativus L.). Compared with biochar, the concentrations of TMs in the roots, stems, leaves, and grains of paddy rice ( Oryza sativa L.) amended with VRM decreased [ 24 ].…”

Section: Resultssupporting

confidence: 91%

Effect of Vermicompost Amendment on the Accumulation and Chemical Forms of Trace Metals in Leafy Vegetables Grown in Contaminated Soils

Yen

Chen

Yang

et al. 2021

IJERPH

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(1) Background: Trace metal (TM) contamination of farmland soil in Taiwan occurs because factories dump wastewater into irrigation ditches. Since vermicompost affects the bioavailability of TMs, the objective of this study was to evaluate its effects on the accumulation of growth of TMs in leafy vegetables. (2) Methods: Two TM-contaminated soils and different types of pak choi and lettuce were used and amended with vermicompost. Besides soil properties, the study assessed vermicompost’s influence on the growth, accumulation, and chemical forms of TMs and on the health risks posed by oral intake. (3) Results: Vermicompost could increase the content of soil organic matter, available phosphorus, exchangeable magnesium, and exchangeable potassium, thus promoting the growth of leafy vegetables. The accumulation of four TMs in crops under vermicompost was reduced compared to the control, especially for the concentration of cadmium, which decreased by 60–75%. The vermicompost’s influence on changing the chemical form of TMs depended on the TM concentrations, type of TM, and crop species; moreover, blanching effectively reduced the concentrations of TMs in high-mobility chemical forms. Although vermicompost mostly reduced the amount of cadmium consumed via oral intake, cadmium still posed the highest health risk compared to the other three TMs.

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Section: Resultssupporting

confidence: 91%

Effect of Vermicompost Amendment on the Accumulation and Chemical Forms of Trace Metals in Leafy Vegetables Grown in Contaminated Soils

Yen

Chen

Yang

et al. 2021

IJERPH

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“…Potential ecological risk index (PERI) was used first time by Hakanson et al (1988) to study sediment related pollution but recently also applied to identify the ecological risk study of soil pollution (Alam, et al, 2020; Latosińska, et al, 2021). Is defined as the sum of the risk factors, which quantitatively defines the potential ecological risk of a contaminant in a sample, that is:

{PERI}_{i} = \sum_{i = 1}^{7} {EF}_{i} = \sum_{i = 1}^{7} {CF}_{i} ∙ italicTF

Where: PERI i denotes potential ecological risk index for individual soil sample ( i ); EF i : monomial potential ecological risk factor; TF : heavy metal toxic‐response factor for individual soil element; CF i : single contamination factor (Hakanson, 1980).…”

Section: Methodsmentioning

confidence: 99%

Baseline maps of potentially toxic elements in the soils of Garhwal Himalayas, India: Assessment of their eco‐environmental and human health risks

et al. 2021

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Geochemical mapping is frequently used to identify the regions of the Planet with critical chemical elements and their natural or anthropogenic sources. In order to understand elements' geochemistry and to identify the area's potentially harmful associations, high‐resolution maps of chemical elements, physico‐chemical parameters, a noncarcinogenic hazard index, and a potential ecological risk index were modelled with soil samples collected in the Himalaya region. It is the first environmental and geochemical atlas for this region. It was found that natural processes are determining the distribution of the variable in this area. The granulometric features seem to be strongly influenced by land use, with coarser grain sizes in forest soils, contrasting with the finer grain sizes in agricultural soils. The map distribution of the noncarcinogenic hazard index showed that there is an expected hazard for some variables for both children and adults. Potential ecological risk is revealed to be low to moderate. Remediation of contaminated soils is necessary to reduce the associated risks, make the land resource available for agricultural production, enhance food security, and scale down land tenure problems arising from changes in the land use pattern. This study is subsequent implementation of natural‐based approaches to system stability in largely unspoilt area.

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“…The application of organic amendments to soil also bio-remediates the soil from pollutants (Glick, 2003). It immobilizes heavy metals by forming metallo-humic complexes which are chemically stable (Alam et al, 2020), reducing the contaminants to a less toxic form, or increasing the soil's pH, thereby making the metals less available for plant uptake (Lacalle et al, 2020).…”

Section: The Role Of Beneficial Microorganisms In the Performance Of Organic Amendmentsmentioning

confidence: 99%

Plant Disease Management: Leveraging on the Plant-Microbe-Soil Interface in the Biorational Use of Organic Amendments

et al. 2021

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Agriculture is faced with many challenges including loss of biodiversity, chemical contamination of soils, and plant pests and diseases, all of which can directly compromise plant productivity and health. In addition, inadequate agricultural practices which characterize conventional farming play a contributory role in the disruption of the plant-microbe and soil-plant interactions. This review discusses the role of organic amendments in the restoration of soil health and plant disease management. While the use of organic amendments in agriculture is not new, there is a lack of knowledge regarding its safe and proper deployment. Hence, a biorational approach of organic amendment use to achieve sustainable agricultural practices entails the deployment of botanicals, microbial pesticides, and organic minerals as organic amendments for attaining plant fitness and disease suppression. Here, the focus is on the rhizosphere microbial communities. The role of organic amendments in stimulating beneficial microbe quorum formation related to the host-plant-pathogen interactions, and its role in facilitating induced systemic resistance and systemic-acquired resistance against diseases was evaluated. Organic amendments serve as soil conditioners, and their mechanism of action needs to be further elaborated to ensure food safety.

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The effects of organic amendments on heavy metals bioavailability in mine impacted soil and associated human health risk

Cited by 66 publications

References 40 publications

Effect of Vermicompost Amendment on the Accumulation and Chemical Forms of Trace Metals in Leafy Vegetables Grown in Contaminated Soils

Effect of Vermicompost Amendment on the Accumulation and Chemical Forms of Trace Metals in Leafy Vegetables Grown in Contaminated Soils

Baseline maps of potentially toxic elements in the soils of Garhwal Himalayas, India: Assessment of their eco‐environmental and human health risks

Plant Disease Management: Leveraging on the Plant-Microbe-Soil Interface in the Biorational Use of Organic Amendments

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