Aging of biochar-based fertilizers in soil: Effects on phosphorus pools and availability to Urochloa brizantha grass

Filho, José Ferreira Lustosa; Carneiro, Jefferson Santana da Silva; Barbosa, Cristiane Francisca; Lima, Kelly Pereira de; Leite, Aline do Amaral; Melo, Leônidas Carrijo Azevedo

doi:10.1016/j.scitotenv.2019.136028

Cited by 31 publications

(5 citation statements)

References 55 publications

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“…There is a substantial body of literature examining biochar reactions over multiple years based on one‐time application of biochar at high rates (e.g., 20–30 Mg ha −1 or 2–3% w/w), often in pots (e.g., Burrell et al, 2016), but there are few studies of biochar or BCF applied at low (commercially viable) rates, as single or repeated applications. Slow release of P from BCF and biochar can increase P‐use efficiency in tropical soils over the medium‐ to long‐term (Lustosa Filho et al, 2020), possibly through (i) input with high P biochars such as those made from manure or sewage sludge; and (ii) reduced P sorption due to DOM released from biochar (Schneider & Haderlein, 2016).…”

Section: Mechanisms Of Biochar Effects On Soil and Plantsmentioning

confidence: 99%

How biochar works, and when it doesn't: A review of mechanisms controlling soil and plant responses to biochar

et al. 2021

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We synthesized 20 years of research to explain the interrelated processes that determine soil and plant responses to biochar. The properties of biochar and its effects within agricultural ecosystems largely depend on feedstock and pyrolysis conditions. We describe three stages of reactions of biochar in soil: dissolution (1–3 weeks); reactive surface development (1–6 months); and aging (beyond 6 months). As biochar ages, it is incorporated into soil aggregates, protecting the biochar carbon and promoting the stabilization of rhizodeposits and microbial products. Biochar carbon persists in soil for hundreds to thousands of years. By increasing pH, porosity, and water availability, biochars can create favorable conditions for root development and microbial functions. Biochars can catalyze biotic and abiotic reactions, particularly in the rhizosphere, that increase nutrient supply and uptake by plants, reduce phytotoxins, stimulate plant development, and increase resilience to disease and environmental stressors. Meta‐analyses found that, on average, biochars increase P availability by a factor of 4.6; decrease plant tissue concentration of heavy metals by 17%–39%; build soil organic carbon through negative priming by 3.8% (range −21% to +20%); and reduce non‐CO2 greenhouse gas emissions from soil by 12%–50%. Meta‐analyses show average crop yield increases of 10%–42% with biochar addition, with greatest increases in low‐nutrient P‐sorbing acidic soils (common in the tropics), and in sandy soils in drylands due to increase in nutrient retention and water holding capacity. Studies report a wide range of plant responses to biochars due to the diversity of biochars and contexts in which biochars have been applied. Crop yields increase strongly if site‐specific soil constraints and nutrient and water limitations are mitigated by appropriate biochar formulations. Biochars can be tailored to address site constraints through feedstock selection, by modifying pyrolysis conditions, through pre‐ or post‐production treatments, or co‐application with organic or mineral fertilizers. We demonstrate how, when used wisely, biochar mitigates climate change and supports food security and the circular economy.

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Section: Mechanisms Of Biochar Effects On Soil and Plantsmentioning

confidence: 99%

How biochar works, and when it doesn't: A review of mechanisms controlling soil and plant responses to biochar

et al. 2021

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“…(2021) Poultry litter Pre Pot experiment Marandu grass ( Urochloa brizantha cv. Marandu) Oxisols 25, 50, 100, 150 and 200 mg kg −1 Increase in the labile and moderately labile P fractions Promoted higher biomass yields in subsequent cycles Lustosa Filho et al. (2020) Poultry litter Pre Pot experiment Maize ( Zea mays L.) Oxisols 25, 50, 100, 150 and 200 mg kg −1 Decreased water-soluble P, thereby causing a slow-release of P Improved soil pH and Mg Dry biomass yields equivalent to TSP treatments Lustosa Filho et al.…”

Section: Effects Of Biochar-based Fertilizers On Soil Chemical Propertiesmentioning

confidence: 99%

“…As such, their application to soils increases the concentrations and availability of nutrients for plants. For example, a significant increase in the fractions of labile P in the soil was observed after applying P-enriched biochars ( Ahmad et al., 2018 ; Lustosa Filho et al., 2020 ; Carneiro et al., 2021 ). The addition of wood and maize cob biochar enriched with anaerobic digestate increased the macronutrient contents (110%–230%) compared with the unenriched biochars and control treatments ( Kizito et al., 2019 ).…”

Section: Effects Of Biochar-based Fertilizers On Soil Chemical Propertiesmentioning

confidence: 99%

A scoping review on biochar-based fertilizers: enrichment techniques and agro-environmental application

Ndoung

Figueiredo

Ramos

2021

Heliyon

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Biochar is a carbonized biomass that can be used as a soil amendment. However, the exclusive use of biochar may present some limitations, such as the lack of nutrients. Thus, biochar enrichment techniques have made it possible to obtain biochar-based fertilizers (BCFs), with great potential to improve soil fertility. Nevertheless, there is still a lack of information about the description, advantages, and limitations of the methods used for biochar enrichment. This review provides a comprehensive overview of the production methods of enriched biochar and its performance in agriculture as a soil amendment. Studies demonstrate that the application of BCF is more effective in improving soil properties and crop yields than the exclusive application of pure biochar or other fertilizers. The post-pyrolysis method is the most used technique for enriching biochar. Future studies should focus on understanding the mechanisms of the long-term application of BCFs.

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“…However, in this case, nutrients are added to the biomass in the form of a solid substance (Zhao et al 2016 ; Lustosa Filho et al 2017 ) or a solution (Chen et al 2020a ) and the biomass is then pyrolysed in the presence of such nutrients, a process referred to as co-pyrolysis. Co-pyrolysis of biomass with phosphorous sources has been proposed as a solution to developing improved biochar-based fertilisers with a stable form of carbon and a slow nutrient release mechanism (Zhao et al 2016 ; Lustosa Filho et al 2020 ). Furthermore, An et al ( 2020 ) reported co-pyrolysis of biomass (cotton straw), with nutrients such as potassium phosphate and bentonite under microwave irradiation, as a novel strategy for synthesising improved quality biochar-based slow-release fertilisers.…”

Section: Agronomymentioning

confidence: 99%

Biochar for agronomy, animal farming, anaerobic digestion, composting, water treatment, soil remediation, construction, energy storage, and carbon sequestration: a review

et al. 2022

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In the context of climate change and the circular economy, biochar has recently found many applications in various sectors as a versatile and recycled material. Here, we review application of biochar-based for carbon sink, covering agronomy, animal farming, anaerobic digestion, composting, environmental remediation, construction, and energy storage. The ultimate storage reservoirs for biochar are soils, civil infrastructure, and landfills. Biochar-based fertilisers, which combine traditional fertilisers with biochar as a nutrient carrier, are promising in agronomy. The use of biochar as a feed additive for animals shows benefits in terms of animal growth, gut microbiota, reduced enteric methane production, egg yield, and endo-toxicant mitigation. Biochar enhances anaerobic digestion operations, primarily for biogas generation and upgrading, performance and sustainability, and the mitigation of inhibitory impurities. In composts, biochar controls the release of greenhouse gases and enhances microbial activity. Co-composted biochar improves soil properties and enhances crop productivity. Pristine and engineered biochar can also be employed for water and soil remediation to remove pollutants. In construction, biochar can be added to cement or asphalt, thus conferring structural and functional advantages. Incorporating biochar in biocomposites improves insulation, electromagnetic radiation protection and moisture control. Finally, synthesising biochar-based materials for energy storage applications requires additional functionalisation.

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Aging of biochar-based fertilizers in soil: Effects on phosphorus pools and availability to Urochloa brizantha grass

Cited by 31 publications

References 55 publications

How biochar works, and when it doesn't: A review of mechanisms controlling soil and plant responses to biochar

How biochar works, and when it doesn't: A review of mechanisms controlling soil and plant responses to biochar

A scoping review on biochar-based fertilizers: enrichment techniques and agro-environmental application

Biochar for agronomy, animal farming, anaerobic digestion, composting, water treatment, soil remediation, construction, energy storage, and carbon sequestration: a review

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