Addition of walnut shells biochar to alkaline arable soil caused contradictory effects on CO2 and N2O emissions, nutrients availability, and enzymes activity

Sial, Tanveer Ali; Shaheen, Sabry M.; Lan, Zhilong; Korai, Punhoon Khan; Ghani, Imran; Khan, Muhammad Numan; Syed, Ain-ul-Abad; Asghar, M.; Rajpar, İnayatullah; Memon, Mushtaq Ahmed; Bhatti, Saleem Maseeh; Abdelrahman, Hamada; Ali, Esmat F.; Rinklebe, Jörg; Jian-guo, Zhang

doi:10.1016/j.chemosphere.2021.133476

Cited by 20 publications

(11 citation statements)

References 77 publications

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“…The type of experiment and experiment period showed a significant positive effect size for biochar application. The meta-analyzed data were consistent with other reports that demonstrated that biochar application induces soil CO 2 emissions [36][37][38][39]. Based on the results of the meta-analysis, the pyrolysis temperature influences CO 2 emissions, in particular, when the temperature was at 300 • C to 500 • C. Deng et al [36] also reported an increase in CO 2 emissions by biochar obtained at lower pyrolysis temperatures (300 • C and 450 • C) using spent mushroom as feedstock.…”

Section: Effect Of Biochar Properties On Soil Ghg Emissionssupporting

confidence: 89%

“…Deng et al [36] also reported an increase in CO2 emissions by biochar obtained at lower pyrolysis temperatures (300°C and 450 °C) using spent mushroom as feedstock. Recently, Sial et al [37] demonstrated an increase in CO2 emissions when walnut shell biochar was used. Emissions increased by 73% and 69% for biochar obtained at 300 °C and 450 °C, respectively; while CO2 emissions were minor (51%) for biochar produced at 600 °C.…”

Section: Effect Of Biochar Properties On Soil Ghg Emissionsmentioning

confidence: 99%

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Impact of Soil Amendment with Biochar on Greenhouse Gases Emissions, Metals Availability and Microbial Activity: A Meta-Analysis

et al. 2022

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The effect of soil amendment with biochar has been widely evaluated for its effects in mitigating greenhouse gas emissions (GHG) and remediating polluted soils with metals; however, a synergic understanding of the system, including biochar, soil, and microbial activity, is lacking. In this study, a meta-analysis of 854 paired data from 73 studies demonstrate that biochar application in soil affects GHG emissions and soil metal availability. First, several properties of biochar, soil, and microbial activity were considered as parameters in the meta-analysis. Then, the size effect was evaluated using the percentage of change (Pc) as obtained by the meta-analyzed data. Several parameters were related as influencer factors in GHG emissions and soil metal availability. Notably, biochar addition in soil resulted in a significant CO2 increase in emissions, whereas N2O emissions decreased; these results were directly correlated with microbial activity. Although this trend, demonstrated by the data analysis, differs from results of other studies found in the literature, it also emphasized the need for a deep understanding of the effect of biochar addition to soil (properties, nutrients, gas exchange, etc.) and to microorganisms (activity, diversity, etc.). Furthermore, it was also proved, that soil metal concentration decreases significantly when biochar was added (Cd > Zn > Pb > Cu > Fe). According to the results, biochar addition in soils contaminated with Cd and Cu was related to an increase in the microbial activity; while, soils amended with biochar but polluted with Pb, Zn, and Fe presented a higher inhibition effect on microorganisms. To improve the interpretation of soil amendment with biochar, it would be necessary to standardize the form for reporting results, particularly of the microbial activity and GHG emissions, in order to be used for future comparative studies.

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Section: Effect Of Biochar Properties On Soil Ghg Emissionssupporting

confidence: 89%

Section: Effect Of Biochar Properties On Soil Ghg Emissionsmentioning

confidence: 99%

Impact of Soil Amendment with Biochar on Greenhouse Gases Emissions, Metals Availability and Microbial Activity: A Meta-Analysis

et al. 2022

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“…The enrichment nutrients in biochar are conducive to increasing SOC and soil mineral contents (Sial et al, 2022; Yao et al, 2021). We found that adding biochar increased the SOC, TN, and AK contents at the seedling stage, with more nutrients significantly increased at the flowering‐boll stage, including SOC, TN, AK, AP, and

{NO}_{3}^{-}

–N (Table 2).…”

Section: Discussionmentioning

confidence: 99%

“…In addition, biochar has an abundance of nutrients and pores, which can provide sufficient growth substrate and suitable living space for microorganisms, further increasing bacterial diversity and abundance (Wang et al, 2015). But biochar also may reduce soil bacterial diversity and abundance due to its high-carbon nature and harmful hydrocarbons (Sial et al, 2022). The 30 t ha À1 of biochar improved the soil bacterial abundance and diversity (Amoakwah et al, 2022), but the high biochar application rate reduced bacterial diversity (Li, Wang, Chang, et al, 2020).…”

mentioning

confidence: 99%

Biochar drives changes in soil bacterial communities and cotton growth by improving nutrients availability under saline conditions

Wang,

Tian,

Qiu

et al. 2023

Land Degrad Dev

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Applying biochar to saline soil is a novel strategy for improving soil quality. However, how biochar addition amount affects soil nutrients, bacterial communities, and cotton growth at different stages remains unclear. Three biochar treatments, no biochar (BC0), 1% biochar (BC1, w/w), 3% biochar (BC3), and two cotton varieties, salt‐sensitive (SS) and salt‐tolerant (ST), were used in pot experiments, analyzing biochar effects on saline soil nutrients, bacterial communities, and cotton growth. The study found that biochar increased only organic carbon (SOC), total nitrogen (TN), and available potassium (AK) at the seedling stage. However, at the flowering‐boll stage, biochar also increased nitrate () and available phosphorus (AP) and reduced soil salt content. Biochar did not affect α‐diversity at the seedling stage, but BC3 reduced α‐diversity at the flowering‐boll stage. The principal coordinate analysis revealed changes in the soil bacterial community composition that were closely associated with biochar added. From the redundancy analyses, SOC and AK were the leading environmental factors for soil bacterial community composition changes. SOC, TN, and AK correlated positively with Proteobacteria, which increased their relative abundance through biochar addition and correlated negatively with Bacteroidetes, Chloroflexi, and Acidobacteria, which decreased their relative abundance due to biochar. Furthermore, the random forests analysis showed that SOC, Shannon index, and β‐diversity were significant predictors of cotton biomass. In summary, biochar drives changes in bacterial communities in saline soils by increasing nutrients such as SOC and AK, which affect cotton growth. This study provides data to support the application of biochar on saline soils.

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“…The analyses conducted on this biofertilizer reveal a significant TCCE content, which accounts for the rise in pH. In their respective studies, authors [ 36 , 37 ] have noted that biochar contains varying concentrations of alkaline ashes that contribute to soil alkalinity. Interestingly, this alkalizing effect diminishes with higher biochar doses, a trend consistent with findings from several researchers [ [38] , [39] , [40] ] who have observed that excessive biochar application at very high doses can marginally lower soil pH.…”

Section: Discussionmentioning

confidence: 99%

Enhancing soil resilience and crop physiology with biochar application for mitigating drought stress in durum wheat (Triticum durum)

Boudjabi,

Ababsa,

Chenchouni

2023

Heliyon

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Addition of walnut shells biochar to alkaline arable soil caused contradictory effects on CO2 and N2O emissions, nutrients availability, and enzymes activity

Cited by 20 publications

References 77 publications

Impact of Soil Amendment with Biochar on Greenhouse Gases Emissions, Metals Availability and Microbial Activity: A Meta-Analysis

Impact of Soil Amendment with Biochar on Greenhouse Gases Emissions, Metals Availability and Microbial Activity: A Meta-Analysis

Biochar drives changes in soil bacterial communities and cotton growth by improving nutrients availability under saline conditions

Enhancing soil resilience and crop physiology with biochar application for mitigating drought stress in durum wheat (Triticum durum)

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