Effect of beeswax waste biochar on growth, physiology and cadmium uptake in saffron

Moradi, Rooholla; Pourghasemian, Nasibeh; Naghizadeh, Mehdi

doi:10.1016/j.jclepro.2019.05.047

Cited by 52 publications

(14 citation statements)

References 62 publications

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“…Among these strategies, in situ stabilization technology with nontoxic soil modifiers effectively reduced Cd bioavailability and subsequent accumulation in crops. In this process, soluble Cd is transformed into a stable phase through adsorption, precipitation, and complexation [ 11 ]. Many soil modifiers, such as lime, iron-based materials, biochar, hydroxyapatite, zeolite, and crop straws, were added during the remediation of soil polluted with heavy metals [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Remediation of Soil Polluted with Cd in a Postmining Area Using Thiourea-Modified Biochar

Zhu

Chen

et al. 2020

IJERPH

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Cadmium presence in soil is considered a significant threat to human health. Biochar is recognized as an effective method to immobilize Cd ions in different soils. However, obtaining effective and viable biochar to remove elevated Cd from postmining soil remains a challenge. More modifiers need to be explored to improve biochar remediation capacity. In this investigation, pot experiments were conducted to study the effects of poplar-bark biochar (PBC600) and thiourea-modified poplar-bark biochar (TPBC600) on Cd speciation and availability, as well as on soil properties. Our results showed that the addition of biochar had a significant influence on soil properties. In the presence of TPBC600, the acid-soluble and reducible Cd fractions were transformed into oxidizable and residual Cd fractions. This process effectively reduced Cd bioavailability in the soil system. Compared to PBC600, TPBC600 was more effective in improving soil pH, electrical conductivity (EC), organic matter (SOM), total nitrogen (TN), ammonium nitrogen (NH4+-N), nitrate nitrogen (NO3--N), available potassium (AK), available phosphorus (AP), and available sulfur (AS). However, this improvement diminished as incubation time increased. Results of Pearson correlation analysis, multivariate linear regression analysis, and principal component analysis showed that soil pH and available phosphorus played key roles in reducing the available cadmium in soil. Therefore, TPBC600 was shown to be an effective modifier that could be used in the remediation of soil polluted with Cd.

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Section: Introductionmentioning

confidence: 99%

Remediation of Soil Polluted with Cd in a Postmining Area Using Thiourea-Modified Biochar

Zhu

Chen

et al. 2020

IJERPH

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“…In their studies they observed that after addition of biochar synthesized by leafy debris accelerated the movement of Cd and Cu in the soil solution. Such type of research was also conducted by (Haouari et al, 2012;Younis et al, 2015;Moradi et al, 2019) in which interaction of chlorophyll contents with Cr and bichar was seen. Chlorophyll contents were found reduced in the presence of Cr ions in the soil.…”

Section: Impacts Of Biochar and CD On Physiological Parametersmentioning

confidence: 73%

Impact of Biochar on the Growth and Physiology of Tomato Grown in the Cadmium Contaminated Soil

Dad¹,

Nawaz²,

Hassan³

et al. 2021

PJAR

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P ollution of heavy metal limits the development and safety of agricultural goods produced in soil and can create remarkable ecological destruction to the environment. Cadmium is one of the greatest threatening components for human health as well as for environment. It is also a needless and nonrenewable component for plants (Zhu et al., 2020). Its existence in the soil is deliberated a thoughtful environmental problem chiefly due to its entrance in the human food chain with hazardous special effects on living entities (De Maria et al., 2013). Toxicity of Cd causes irregularities and inhibition of overall development in numerous species of plant. After extended period exposure to Cd, roots become mucilaginous, decomposing, and browning, and disintegrating; lessening of roots and shoots elongation, rolling and chlorosis of leaves can occur (Tran and Popava, 2013).Biochar is accepted as a soil amendment having Abstract | Heavy metals Pollutants are not only dangerous to human life but also to fauna and flora. The existence of cadmium (Cd) in soil, atmosphere or water may unfavorably affect growth and physiology of plants. The experiment was conducted to study the impacts of biochar on the growth and physiology of tomato grown in Cd contaminated soil and activity of biochar in the contaminated soil. In this study different treatments of Cd were applied in the presence of certain portion of biochar. The order of treatments was 0 mg Cd as control with biochar (12%), low Cd (10mg), high Cd (15mg), low cadmium + biochar (10mg+12%) and high cadmium + biochar (15mg+12%) with distilled water as control. Growth and physiological parameters of plant were studied and prominent results were observed. The results showed that biochar has significant progressive effects on the growth and physiology of tomato by limiting the uptake of Cd by plants. As the concentration of Cd increased to high i.e. 15 mg/kg of soil, the limiting capacity of biochar was also seen less effective.

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“…Consequently, NR activity was changed, which may be related to the fact that biochar can slow down root senescence [ 83 ] . The specific environment created by biochar is favorable for the expression of nitrate reductase/nitrite reductase in both the roots and shoots, which can improve plant/crop growth and yield [ 84 ]. In addition, a large number of experiments have confirmed that biochar significantly changes the rhizospheric environment [ 23 , 24 , 80 ].…”

Section: Discussionmentioning

confidence: 99%

Biochar induced improvement in root system architecture enhances nutrient assimilation by cotton plant seedlings

et al. 2021

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Background Raising nitrogen use efficiency of crops by improving root system architecture is highly essential not only to reduce costs of agricultural production but also to mitigate climate change. The physiological mechanisms of how biochar affects nitrogen assimilation by crop seedlings have not been well elucidated. Results Here, we report changes in root system architecture, activities of the key enzymes involved in nitrogen assimilation, and cytokinin (CTK) at the seedling stage of cotton with reduced urea usage and biochar application at different soil layers (0–10 cm and 10–20 cm). Active root absorption area, fresh weight, and nitrogen agronomic efficiency increased significantly when urea usage was reduced by 25% and biochar was applied in the surface soil layer. Glutamine oxoglutarate amino transferase (GOGAT) activity was closely related to the application depth of urea/biochar, and it increased when urea/biochar was applied in the 0–10 cm layer. Glutamic-pyruvic transaminase activity (GPT) increased significantly as well. Nitrate reductase (NR) activity was stimulated by CTK in the very fine roots but inhibited in the fine roots. In addition, AMT1;1, gdh3, and gdh2 were significantly up-regulated in the very fine roots when urea usage was reduced by 25% and biochar was applied. Conclusion Nitrogen assimilation efficiency was significantly affected when urea usage was reduced by 25% and biochar was applied in the surface soil layer at the seedling stage of cotton. The co-expression of gdh3 and gdh2 in the fine roots increased nitrogen agronomic efficiency. The synergistic expression of the ammonium transporter gene and gdh3 suggests that biochar may be beneficial to amino acid metabolism.

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Effect of beeswax waste biochar on growth, physiology and cadmium uptake in saffron

Cited by 52 publications

References 62 publications

Remediation of Soil Polluted with Cd in a Postmining Area Using Thiourea-Modified Biochar

Remediation of Soil Polluted with Cd in a Postmining Area Using Thiourea-Modified Biochar

Impact of Biochar on the Growth and Physiology of Tomato Grown in the Cadmium Contaminated Soil

Biochar induced improvement in root system architecture enhances nutrient assimilation by cotton plant seedlings

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