Combined application of biochar and nano-zeolite enhanced cadmium immobilization and promote the growth of Pak Choi in cadmium contaminated soil

Feng, Shouhua; Zhang, Peng; Hu, Yanmei; Jin, Feng; Liu, Yuqing; Cai, Shixin; Song, Zijie; Zhang, Xing; Nadezhda, Tcyganova; Guo, Zhiling; Lynch, Iseult; Dang, Xiuli

doi:10.1016/j.impact.2022.100421

Cited by 24 publications

(2 citation statements)

References 38 publications

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“…Since carotenoids play a crucial function in photoprotection, scavenging ROS and releasing the excess of energy by thermal dissipation via xanthophyll cycle (Seyed et al., 2012), this lower ratio in FC leaves shows higher need for photoprotection of chlorophylls. Lower signs of oxidative stress in plants treated with biochar and zeolites were observed in previous studies (Abideen et al., 2020; Bybordi, 2016; Feng et al., 2022; He et al., 2020; Jiang et al., 2022).…”

Section: Discussionsupporting

confidence: 69%

Differential responses of photosynthesis, yield and soil properties 4 years after a single application of zeolites and biochar in a rainfed olive orchard

Martins,

Brito,

Gonçalves

et al. 2024

Soil Use and Management

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Olive orchards represent a key agricultural system in the Mediterranean Basin. Soil degradation processes associated with unsustainable agronomic practices and climate change could severely impact the sustainability of Mediterranean rainfed olive orchards. In this context, soil amendments are important tools that can be used to enhance soil fertility for sustained environmental quality and plant performance. In this study, a field trial was conducted for 4 years in olive tree (Olea europaea L.) to assess the effects of a mineral fertilizer compound and the combination with a single application of zeolites or biochar on the physiological and biochemical performance, tree nutritional status, crop yield and soil chemical and biological properties to gain knowledge towards more sustainable management. Our results showed that the addition of zeolites and biochar to mineral fertilizer ameliorated the physiological and biochemical performance, as evidenced by consistent increments of relative water content, stomatal conductance and net photosynthesis and by lower signs of oxidative stress during the periods of greater climate adversity. However, crop yield was not significantly different among soil treatments. On the other hand, soil chemical and biological traits at the surface layer (0–10 cm) have shown different and relevant responses after 4 years of soil amendment application. In fact, zeolite supply stood out as increased pH, extractable K, cation exchange capacity, microbial biomass carbon and microbial biomass quotient and reduced extractable Cu. Furthermore, zeolites induced positive changes in soil enzymatic activity, leading to increases in 10 enzymes involved in C, N and P cycles. In contrast, the effects of biochar on soil properties were much more reduced, given that it decreased the microbial biomass nitrogen and enhanced the activities of three P‐cycle enzymes. In summary, our data demonstrated that both soil amendments can be an interesting complement to mineral fertilization, in order to increase trees' resilience under rainfed conditions and to promote soil health, although the use of zeolites appears to be a more promising strategy because of the induction of higher soil sustainability.

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Section: Discussionsupporting

confidence: 69%

Differential responses of photosynthesis, yield and soil properties 4 years after a single application of zeolites and biochar in a rainfed olive orchard

Martins,

Brito,

Gonçalves

et al. 2024

Soil Use and Management

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“…Catalase is an oxidoreductase enzyme that decomposes hydrogen peroxide in the soil, maintaining normal microbial activities, and increasing the ability of microorganisms to withstand harsh environments (Feng et al 2022;Sun et al 2016b). Dehydrogenase acts as a proton acceptor in oxidation reactions, and it mainly controls the bio-oxidation of organic matter in soil, thereby reflecting the overall microbial activity (Burns et al 2013;Igalavithana et al 2017).…”

Section: Rhizosphere Enzymesmentioning

confidence: 99%

A critical review of the interactions between rhizosphere and biochar during the remediation of metal(loid) contaminated soils

Fan,

Cui,

Zhang

et al. 2023

Biochar

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Biochar has a large specific surface area, well-developed pore structure, abundant surface functional groups, and superior nutrient supply capacity, which is widely available and environmentally friendly with its advantages in waste resource utilization, heavy metal(loid) remediation, and carbon storage. This review focuses on the interactions between biochar (including raw biochar, functional biochar (modified/ engineered/ designer biochar), and composite biochar) and rhizosphere during the remediation of soil contaminated with heavy metal(loid)s (Pb, As, Cd, Hg, Co, Cu, Ni, Zn, Cr, etc.) and the effects of these interactions on the microbial communities and root exudates (enzymes and low-molecular-weight organic acids (LMWOAs)). In terms of microorganisms, biochar affects the composition, diversity, and structure of microbial communities through the supply of nutrients, provision of microbial colonization sites, immobilization of heavy metal(loid)s, and introduction of exogenous microorganisms. With regard to root exudates, biochar provides electron transfer support between the microorganisms and exudates, regulates the secretion of enzymes to resist the oxidative stress stimulated by heavy metal(loid)s, ameliorates rhizosphere acidification caused by LMWOAs, and promotes the activity of soil enzymes. The roles and mechanisms of biochar on rhizosphere soils are discussed, as well as the challenges of biochar in the remediation of heavy metal(loid)-contaminated soils, and the issues that need to be addressed in future research are foreseen. Graphical Abstract

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Nano‐biochar: Properties and prospects for sustainable agriculture

et al. 2023

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Biochar is an extremely valuable carbon black material used since the Pre‐Columbian Era in Latin America and is known for its properties to promote soil fertility and sustain crop production. Modern civilization has followed the footsteps of ancient civilizations and has prepared nano‐sized biochar (nano‐BC). The synthesis of nano‐BC can be achieved using different feedstock materials via pyrolysis, yielding bulk‐BCs which are mechanical transformed into the nano‐BCs, the final value‐added product. This review provides insights into structural, functional, and elemental properties concerning synthesis, surface properties including functional groups, and carbon stability. Moreover, the prospects of improving soil physicochemical properties including CEC, nutrient availability, soil water retention, and buffering capacity are discussed with agricultural implications. Mechanistic insights have been provided regarding how nano‐BC can improve soil health and could promote plant growth and physio‐biochemical properties, which further pave the way for its application to improve plant resilience to abiotic stress factors. Last, limited studies have been conducted that elucidate potential negative effects including contaminant mobilization and residual effects and these are also critically discussed. Above all, nano‐BC could be used as a beneficial soil amendment to boost crop production and enhance soil fertilities.

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Combined application of biochar and nano-zeolite enhanced cadmium immobilization and promote the growth of Pak Choi in cadmium contaminated soil

Cited by 24 publications

References 38 publications

Differential responses of photosynthesis, yield and soil properties 4 years after a single application of zeolites and biochar in a rainfed olive orchard

Differential responses of photosynthesis, yield and soil properties 4 years after a single application of zeolites and biochar in a rainfed olive orchard

A critical review of the interactions between rhizosphere and biochar during the remediation of metal(loid) contaminated soils

Nano‐biochar: Properties and prospects for sustainable agriculture

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