Biochar amendment effects on the activities of soil carbon, nitrogen, and phosphorus hydrolytic enzymes: a meta-analysis

Zhang, Leiyi; Xiang, Yangzhou; Jing, Yiming; Zhang, Renduo

doi:10.1007/s11356-019-05604-1

Cited by 73 publications

(45 citation statements)

References 88 publications

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“…Meta-analysis was performed using Metawin 2.1 software [27,28]. The mean effect sizes were evaluated with a random-effects model.…”

Section: Discussionmentioning

confidence: 99%

A meta-analysis of the effects of crop residue return on crop yields and water use efficiency

Lü

2020

PLoS ONE

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After harvesting agricultural crops, the residue can be returned to the soil as mulch. This study performed a meta-analysis of previous research to investigate the effects of crop residue return and other factors on crop yields and water use efficiency (WUE). Overall, the results show that crop residue return increases crop yields by 5.0% relative to crops grown without it. The greatest increases in yield for crops grown with returned residue were associated with average annual temperatures < 10˚C (yield increase = 7.6%), rainfall � 800 mm (9.5%), plowing depth � 20 cm (6.5%), corn crops (8.0%), growth of a single crop per year (10.1%), no irrigation (11.9%), nitrogen (N), and potassium (K) fertilization (20.0%), and low nitrogen application rates of 0-100 kg N ha-1 (10.8%). The effects of crop residue return on crop yields were found to vary according to the following soil properties: organic matter content � 15 g kg-1 (yield increase = 9.4%), available nitrogen content � 100 mg kg-1 (10.3%), and pH � 6.5 (11.2%). The greatest magnitudes of increase in WUE associated with crop residue return were associated with corn (yield increase = 13.7%), medium nitrogen content (100-150 kg ha-1 ; 23.3%), high soil organic matter (� 15 g kg-1 ; 25.5%) and low air temperatures (< 10˚C; 19.9%). In addition, our results suggest that crop residue return might be most effective in increasing crop yields and WUE in corn crops, crops with a tillage depth � 20 cm, crops grown with moderate nitrogen fertilization (0-150 kg ha-1), growth of a single crop per year, high soil organic matter content (� 15 g kg-1), and cold conditions (< 10˚C). Overall, the results of this meta-analysis suggest that crop residue return can increase crop yields and WUE, with the relationship being mainly affected by climatic conditions, plowing depth, fertilization management, crop types, and soil properties.

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“…Meta-analysis was performed using Metawin 2.1 software [27,28]. The mean effect sizes were evaluated with a random-effects model.…”

Section: Discussionmentioning

confidence: 99%

A meta-analysis of the effects of crop residue return on crop yields and water use efficiency

Lü

2020

PLoS ONE

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“…Biochar affects the activities of soil extracellular enzymes which are responsible for organic C degradation and other important enzymes for N mineralization or P solubilization. Such effects vary with biochar property, soil type and enzyme type (Zhang et al 2019;Pokharel et al 2020).…”

Section: Biochar Effects On Soil Microbial Enzyme Activitiesmentioning

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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“…Change in soil pH caused by biochar also influences the phosphatase activity and the microbial abundance. The meta-analysis of the effects of biochar amendment on soil enzyme activities performed by Zhang et al [84], where 401 paired comparisons were analysed amongst 43 peer-reviewed published papers, showed that overall soil enzyme activity linked to P cycling increased by 11%. The significant increase of the enzyme activity linked to P cycle was observed especially in acidic and neutral farmland soils, as well as with the addition of biochar produced at high temperatures [84].…”

Section: Enhancement Of P Solubilisation and Mineralisation By Alterimentioning

confidence: 99%

“…The meta-analysis of the effects of biochar amendment on soil enzyme activities performed by Zhang et al [84], where 401 paired comparisons were analysed amongst 43 peer-reviewed published papers, showed that overall soil enzyme activity linked to P cycling increased by 11%. The significant increase of the enzyme activity linked to P cycle was observed especially in acidic and neutral farmland soils, as well as with the addition of biochar produced at high temperatures [84]. Similarly, several other studies showed shifts in enzyme activities induced by biochar addition [65,85]; for instance, alkaline phosphomonoesterase activities were increased, whilst acidic phosphomonoesterase activities were inhibited by addition of biochar regardless of soil types [86,87].…”

Section: Enhancement Of P Solubilisation and Mineralisation By Alterimentioning

confidence: 99%

Role of biochar in promoting circular economy in the agriculture sector. Part 1: A review of the biochar roles in soil N, P and K cycles

Jindo

Audette

Higashikawa

et al. 2020

Chem. Biol. Technol. Agric.

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Recently, biochar has been widely used for versatile applications in agriculture and environment sectors as an effective tool to minimise waste and to increase the efficiency of circular economy. In the present work, we review the current knowledge about biochar role in N, P and K cycles. Ammonia volatilisation and N 2 O emission can be reduced by biochar addition. The content of available P can be improved by biochar through enhancement of solubilisation and reduction in P fixation on soil mineral, whilst high extractable K in biochar contributes to K cycle in soil. Liming effect and high CEC are important properties of biochars improving beneficial interactions with N, P and K soil cycle processes. The effectiveness of biochar on N, P and K cycles is associated with biochar properties which are mainly affected by feedstock type and pyrolysis condition.

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Biochar amendment effects on the activities of soil carbon, nitrogen, and phosphorus hydrolytic enzymes: a meta-analysis

Cited by 73 publications

References 88 publications

A meta-analysis of the effects of crop residue return on crop yields and water use efficiency

A meta-analysis of the effects of crop residue return on crop yields and water use efficiency

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

Role of biochar in promoting circular economy in the agriculture sector. Part 1: A review of the biochar roles in soil N, P and K cycles

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