Effects of biochar addition on the abundance, speciation, availability, and leaching loss of soil phosphorus

Lu, Yang; Wu, Yunchao; Wang, Yichu; An, Weiqi; Jin, Jie; Sun, Ke; Wang, Xiangke

doi:10.1016/j.scitotenv.2020.143657

Cited by 86 publications

(26 citation statements)

References 121 publications

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“…They can solubilize inorganic P or release enzymes to mineralize organic P, and finally increase soil P availability (Khan et al 2014). Biochar can affect soil P cycling through (1) directly providing labile P nutrient, especially for manure biochar (Novak et al 2014); (2) improving soil P retention capacity to reduce P leaching (Liu et al 2019;Yang et al 2021) and ( 3) affecting the activities and communities of P-solubilizing microorganisms. In this section, we discuss the effects of biochar on soil microbial communities and in turn the feedbacks of altered microbial communities to (1) soil P availability and (2) soil P fractions (Fig.…”

Section: Soil Microbial-mediated P Cyclingmentioning

confidence: 99%

Association of biochar properties with changes in soil bacterial, fungal and fauna communities and nutrient cycling processes

Dai

Xiong

Zhu

et al. 2021

Biochar

171

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Soil microorganisms play crucial roles in soil nutrient cycling, carbon sequestration, fertility maintenance and crop health and production. To date, the responses of microorganisms, such as microbial activity, diversity, community structure and nutrient cycling processes, to biochar addition have been widely reported. However, the relationships between soil microbial groups (bacteria, fungi and microscopic fauna) and biochar physicochemical properties have not been summarized. In this review, we conclude that biochar affects soil microbial growth, diversity and community compositions by directly providing growth promoters for soil biota or indirectly changing soil basic properties. The porous structure, labile C, high pH and electrochemical properties of biochar play an important role in determining soil microbial abundance and communities, and their mediated N and P cycling processes, while the effects and underlying mechanisms vary with biochar types that are affected by pyrolysis temperature and feedstock type. Finally, we highlight some issues related to research methodology and subjects that are still poorly understood or controversial, and the perspectives for further research in microbial responses to biochar addition.

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Section: Soil Microbial-mediated P Cyclingmentioning

confidence: 99%

Association of biochar properties with changes in soil bacterial, fungal and fauna communities and nutrient cycling processes

Dai

Xiong

Zhu

et al. 2021

Biochar

171

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“…The increasing effect was mainly attributed to decreased soil acid and increased alkaline phosphatase enzyme activities and P-solubilizing bacteria (Zhou et al 2020). Biochar can be used as a source of P to provide soluble and exchangeable P to soil, and it can also increase the availability of endogenous P by affecting the complexation and metabolic effects related (Yang et al 2021). However, the negative results were attributed to the strong adsorption capacity of biochar (Borno et al 2018).…”

Section: Introductionmentioning

confidence: 99%

“…However, the negative results were attributed to the strong adsorption capacity of biochar (Borno et al 2018). Biochar can also directly or indirectly affect the availability of P by affecting crop P uptake and soil P loss process (Yang et al 2021). Moreover, soil microorganisms and extracellular enzymes play critical roles in transformation of soil P forms (Richardson and Simpson 2011;Liang et al 2017), which can be altered by crop straw and biochar amendment.…”

Section: Introductionmentioning

confidence: 99%

Seven years of biochar amendment has a negligible effect on soil available P and a progressive effect on organic C in paddy soils

Yuan

Wang

Zhao

et al. 2022

Biochar

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Little attention has been paid to how long-term application of crop straw and its biochar affects soil phosphorus (P) transformation and carbon (C) fractions. We conducted a 7-year field experiment including control treatment (chemical fertilizer only, CK), straw return (2.25 t ha−1), and different amounts of biochar addition (11.25 t ha−1 (0.5%BC) and 22.5 t ha−1 (1.0%BC), to investigate influence of these amendments on soil C structure, P fractions, and their interaction with microorganisms. The 13C nuclear magnetic resonance and soil P sequence fractionation were applied to capture changes of soil C compositions and P pool. Compared to CK, straw and biochar amendments decreased alkyl C/O-alkyl C, which is conducive to increased soil organic C. The 0.5%BC and 1.0%BC treatments enhanced recalcitrant aromatic C by 69.0% and 131%, respectively. Compared to CK (101.2 ± 33.32 mg kg−1), the 0.5%BC and 1.0%BC treatments had a negligible effect on soil available P, while negative effects were observed in straw treatment (59.79 ± 9.023 mg kg−1). Straw and biochar amendments increased primary P and occluded P, whereas had negligible effect on organic P. Redundancy analysis and correlation analysis indicated that C compositions and P pool correlated to microbial community composition and enzyme activities, and aromatic C was the most related factor. Moreover, structural equation modeling indicated available P was most related to phosphatase activity and C composition. Our findings reveal the changes of soil P and C response under long-term crop straw and its biochar amendment, and can contribute toward improving understanding of the effect of biochar and straw return in future agriculture management.

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“…However, although the extractable proportion of P tended to decrease with increases in the pH of the extracting agent, Pearson's correlation coefficients did not indicate any significant (p < 0.05) relationship between the extracting solution's pH and extractable P levels, and, therefore, the role of the solution pH remains in question. Moreover, as reviewed by Yang et al (2021), the soil application of biochar will affect the potential P-release an additional interaction with the soil, where the P mobility in the soil will be a result of (i) the mobile P pool originating from the biochar, (ii) the enhancement of the mobility of the soil-bearing P due to the soil-biochar interaction, and (iii) reduction of the P losses in the biochar treated soils.…”

Section: Phosphorus Release With the Lmwoasmentioning

confidence: 99%

The role of low molecular weight organic acids in the release of phosphorus from sewage sludge-based biochar

et al. 2021

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Low molecular weight organic acids (LMWOAs) are common and abundant compounds in the environment, responsible for the release of the nutrients from rhizosphere into the soil solution and, therefore, facilitating the availability of these nutrients for plants. Sewage sludge biochar (SSB) is considered to be a potential source of phosphorus (P) in soil. In this context, the efficacy of twelve LMWOAs in releasing SSB-bearing P was tested in a laboratory extraction experiment. Moreover, the potential effects of (i) biochar pyrolysis temperature (varying from 220°C to 620°C) and (ii) other elements in SS, to estimate the P bonds attacked predominantly by the LMWOAs, were also assessed. The results revealed citric acid was the most effective extraction agent enhancing the mobility of the SSB-derived P. P release was strongly affected by biochar pyrolysis temperature (the highest P release was from the 320°C biochar, significant at p < 0.05). Moreover, the results showed that P was released preferably from Fe-P bearing compounds in SS. Citric acid was recorded as less effective at releasing other nutrients, such as Ca, Mg, K, indicating the exceptional performance of citric acid in P release from biochar without substantial effect on the other nutrients.

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Effects of biochar addition on the abundance, speciation, availability, and leaching loss of soil phosphorus

Cited by 86 publications

References 121 publications

Association of biochar properties with changes in soil bacterial, fungal and fauna communities and nutrient cycling processes

Association of biochar properties with changes in soil bacterial, fungal and fauna communities and nutrient cycling processes

Seven years of biochar amendment has a negligible effect on soil available P and a progressive effect on organic C in paddy soils

The role of low molecular weight organic acids in the release of phosphorus from sewage sludge-based biochar

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