Changes in soil pH and nutrient extractability after co-applying biochar and paper mill biosolids

Manirakiza, Eric; Ziadi, Noura; Luce, Mervin St.; Hamel, Chantal; Antoun, Hani; Karam, Antoine

doi:10.1139/cjss-2019-0138

Cited by 9 publications

(5 citation statements)

References 68 publications

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“…It may be likely because the BA contents also depend upon the type of feedstock, as the wood biochar with high ash contents can have BpH from 4 to 9 . The regression relationship also supported the meta-analysis results and showed that the increase in the BAs significantly decreases the acidic SpH (Table ); this may be because the BAs contained the oxides and hydroxides that contributed to reduce SpH . Moreover, the BC/N ≤ 30 showed a greater effect on increasing the acidic SpH compared to other BC/N subgroups, and these results were also in accordance with the previous literature .…”

Section: Discussionsupporting

confidence: 88%

“…53 The regression relationship also supported the meta-analysis results and showed that the increase in the BAs significantly decreases the acidic SpH (Table 2); this may be because the BAs contained the oxides and hydroxides that contributed to reduce SpH. 54 Moreover, the BC/N ≤ 30 showed a greater effect on increasing the acidic SpH compared to other BC/N subgroups, and these results were also in accordance with the previous literature. 55 The reason may be that when the biochar having a BC/N ≥ 45 is applied to the soil, it takes a longer time to decompose, and during decomposition the organic acids are produced which decrease the soil pH.…”

Section: The Soil Ph Influenced By Biochar Propertiessupporting

confidence: 85%

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Biochar Application Can Improve Most of the Chemical Properties of Acidic Soils: A Global Meta-Analysis

Aurangzeib,

Zhang,

Yan

et al. 2024

ACS Agric. Sci. Technol.

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Biochar has been widely used to improve the properties of acidic soil properties. However, the effectiveness of biochar in acidic soil properties was debated and has been less focused on in previous reviews. The present meta-analysis aimed to determine the importance of the biochar pyrolysis temperature (BPT) and the effect of biochar properties on acidic soil properties. The Pearson correlation and a meta-analysis involving the data obtained from 50 peer-reviewed publications showed that BPT has a significant positive correlation with biochar pH (BpH), biochar total carbon, biochar ash (BAs), and the biochar carbon to nitrogen ratio (BC/N), and a significant negative correlation with biochar total nitrogen (BN). The biochar feedstock straw was more effective in increasing the acidic soil pH (SpH), soil electrical conductivity (SEC), soil available phosphorus (SAP), and soil organic matter (SOM). The biochar application rates ≥ 80 t ha −1 significantly increased the acidic SpH, soil available nitrogen (SAN), soil available potassium (SAK), and SOM. The BpH ≥ 10 increased all the observed acidic soil properties except SEC. The BC/N 30− 45 significantly increased SAN, SAP, and SOM, while the BC/N ≤ 30 was more effective at increasing SpH and SAK. The relationship of BN, biochar total phosphorus, and biochar total potassium with soil properties was inconsistent except that BN ≥ 1% not only increased the SAN but also increased the SAP and SAK. Except for SAK, BAs ≤ 15 significantly increased all observed soil properties. According to the PLS-SEM, BPT affects biochar properties and then affects soil properties (P < 0.05). Generally, the application of biochar in acidic soil increases all the observed soil properties according to the grand mean total effect size. This article gives us a clear image that if the SpH < 7, then BPT ≥ 800, BF straw, and BpH > 10 can be used to improve the acidic soil properties.

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Section: Discussionsupporting

confidence: 88%

Section: The Soil Ph Influenced By Biochar Propertiessupporting

confidence: 85%

Biochar Application Can Improve Most of the Chemical Properties of Acidic Soils: A Global Meta-Analysis

Aurangzeib,

Zhang,

Yan

et al. 2024

ACS Agric. Sci. Technol.

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“…At the end of incubation, soil Mehlich-3 K was from 148 (M550) to 247 mg•kg −1 (M400) higher in biochar-amended soils than in the control, representing an increase of 123%-206% (Table 3). A similar trend was observed in a different 224 d incubation (Manirakiza et al 2020). Authors reported that the Mehlich-3 K concentration increased with the increase of pine biochar application rate in two acidic soils amended with paper mill biosolids, and this effect was primarily due to increasing K input from the biochar itself.…”

Section: Soil K Extractabilitysupporting

confidence: 74%

Soil Mehlich-3-extractable elements as affected by the addition of biochars to a clay soil co-amended with or without a compost

2022

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Biochar has potential to sequester carbon and mitigate greenhouse gas emissions, and it may also contribute nutrients for plant growth in temperate climates. Nutrient availability in biochar-amended soil was assessed in a 338-d incubation study. The clay soil prepared with 4% w/w (dry basis) compost or without compost, then amended with wood-based biochar made at different pyrolysis temperatures (maple bark [Acer saccharum] at 400°C [M400], 550°C [M550] and 700°C [M700]) on a dry-rate basis of 5% (w/w). After moistening the soil mixture to 44% volumetric soil water content (equivalent to 70% water-filled pore space), soil mixtures were incubated in the dark at 22°C. Soil was sampled at days 9, 16, 23, 44, 86, 23 170 and 338 of the incubation. Biochar amendment increased the Mehlich-3 P, K, Ca, Mg and Cu concentrations, and reduced the Mehlich-3 Al and Fe concentrations at each sampling date, and M400 had the most significant effect on Mehlich-3 extractable nutrient concentrations. Compost addition also increased the amounts of extractable nutrients. These results suggested that M400 and carbon-rich compost promoted microbial growth and mineralization in amended soil. In addition, soil mixed with compost and amended with biochar had more Mehlich-3 extractable K than when compost or biochar were applied alone, probably due to greater growth and activity of soil K-solubilizing microorganisms. Overall, our study indicated that co-application of wood-based biochar and compost could improve soil fertility in temperate regions by increasing the availability of most plant macronutrients and micronutrients.

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“…Although biochar amendments can improve soil fertility and N, P, K, and total C content (Biederman and Harpole 2013;Mukherjee et al 2014), this C-rich material is generally not considered as a fertilizer source. The co-application with an organic or inorganic source of fertilizer is often recommended to increase the availability of nutrients in agricultural soil (Abedin 2018;Sánchez-Monedero et al 2019;Abedin and Unc 2020;Manirakiza et al 2020;Omara et al 2020;Ziadi et al 2020). For example, Abedin (2018) added biochar derived from sugar maple (Acer saccharum) at a rate of 20 Mg C ha -1 with half or the full recommended dose of fertilizers and fishmeal.…”

Section: Biochar Effect On Soil Chemical Propertiesmentioning

confidence: 99%

Biochar in temperate soils: opportunities and challenges

2022

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Biochar, a carbon-rich material produced by the pyrolysis of organic residues, is frequently used as a soil amendment to enhance soil fertility and improve soil properties in tropical climates. However, in temperate agriculture, the impact of biochar on soil and plant productivity remains uncertain. The objective of this review is to give an overview of the challenges and opportunities of using biochar as an amendment in temperate soils. Among the various challenges, the type of feedstock and the conditions during pyrolysis produces biochars with different chemical and physical properties, resulting in contrasting effects on soils and crops. Furthermore, biochar aging, biochar application rates and its co-application with mineral fertilizer and/or organic amendments add further complexity to our understanding of the soil-amendment-plant continuum. Although its benefits on crop yield are not yet well demonstrated under field studies, other agronomic benefits of biochar in temperate agriculture have been documented. In this review, we proposed a broader view of biochar as a temperate soil amendment, moving beyond our current focus on crop productivity, and instead target its capacity to improve soil properties. We explored biochar’s benefits in remediating low productive agricultural lands, and its environmental benefits through long-term carbon sequestration and reduced nutrient leaching while curtailing our reliance on fertilizer input. We also discussed the persistence of beneficial impacts of biochar in temperate field conditions. We concluded biochar displays great prospective to improve soil health and its productivity, enhance plant stress resilience, mitigate greenhouse gas emissions and restore degraded soils in temperate agriculture.

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Changes in soil pH and nutrient extractability after co-applying biochar and paper mill biosolids

Cited by 9 publications

References 68 publications

Biochar Application Can Improve Most of the Chemical Properties of Acidic Soils: A Global Meta-Analysis

Biochar Application Can Improve Most of the Chemical Properties of Acidic Soils: A Global Meta-Analysis

Soil Mehlich-3-extractable elements as affected by the addition of biochars to a clay soil co-amended with or without a compost

Biochar in temperate soils: opportunities and challenges

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