Charcoal Fine Residues Effects on Soil Organic Matter Humic Substances, Composition, and Biodegradability

Leal, Otávio dos Anjos; Dick, Deborah Pinheiro; Rosa, José María De la; Leal, Daniela Piaz Barbosa; González‐Pérez, José Antonío; Campos, Gabriel Soares; Knicker, Heike

doi:10.3390/agronomy9070384

Cited by 8 publications

(5 citation statements)

References 62 publications

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“…The lower proportion of aromatic groups in our study compared to other soils subjected to annual burning Leal et al 2019), is possibly due to the enhanced decomposition of aromatic groups by soil micribiota in the hot and humid climate of the region . The high percentage of aromatic structures (aromatic-C) found in the border samples also shows that organic matter on the border is less labile than the slower burning material in the interior of the fragments.…”

Section: Som Hf Thermal Degradabilitycontrasting

confidence: 55%

“…Although forest fragments dispersed in Amazonian savanas may have similar soils (Feitosa et al, 2016), distinctions in vegetation structure and species composition between border and interior of fragments (Santos et al 2013) can lead to diferences in the characteristcs of the organic matter pool mediated by fire intensity (Biddulph and Kellman 1998). The effects of fire on quality of SOM in forest fragments is little studied in fragments of seasonal forest dispersed in savanna matrices in the northern Brazilian Amazon (Knicker et al 2005a;Leal et al 2019).…”

Section: Introductionmentioning

confidence: 99%

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Effects of fire on soil organic matter in northern Amazonian forest fragments

et al. 2022

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Forest fires incorporate pyrogenic organic matter into the soil, affecting the characteristics of soil organic matter (SOM) due to its high aromaticity, increasing its renewal time. However, the factors that control the concentration of pyrogenic organic matter and its chemical composition and structure are still little known. Forest fragments dispersed in a savanna matrix of the northern Brazilian Amazon are frequently impacted by fires, which can affect the composition of SOM within the fragments. The aim of this study was to analyse the chemical composition of SOM in the border and interior of six forest fragments in the Roraima savanna, in the northern Brazilian Amazon. Soil samples were collected at 10-cm intervals up to 1 m in depth at the border and in the interior of each fragment. Soil organic material concentration was determined with 10% HF solution and its elemental composition, thermogravimetric index, and 13C CPMAS NMR spectroscopic analysis were determined. There was no significant difference in the aromaticity index between border and interior. The concentration of alkyl C structures between border (22 to 25%) and interior (19 to 29%) indicated the occurrence of medium-intensity fires in the study area. The thermogravimetric analysis showed no significant difference in the thermal stability of SOM between border and interior. Our results showed no pronounced difference in SOM quality up to 1 m depth between the border and the interior of the evaluated forest fragments, indicating that this compartment is stable throughout the fragments.

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Section: Som Hf Thermal Degradabilitycontrasting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

Effects of fire on soil organic matter in northern Amazonian forest fragments

et al. 2022

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“…With regard to the estimated carbon mean resident times (MRTs), the control soils showed similar MRT fast values to those reported by other authors for unamended agricultural soils [38,39]. The MRT fast was significantly higher with the application of the NC at both doses-especially at a low dose, being up to 54.4 days-in contrast with AC, which did not cause any remarkable changes compared to the control.…”

Section: Degradation Of Compost Into Soc Poolssupporting

confidence: 81%

Evolution of Maize Compost in a Mediterranean Agricultural Soil: Implications for Carbon Sequestration

et al. 2023

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Compost amendments, apart from improving fertility and the general characteristics of agricultural soils, have known implications for global C cycling and sequestration in soils. Their effects are usually assessed via the quantification of soil organic carbon (SOC) pools, usually labile (fast) and recalcitrant (slow) pools, with varying intrinsic decomposition rates and distinct resident times. However, the real C-sequestration potential of organic additions to soil is still under discussion. In this study, a field trial and a lab incubation experiment were designed to study the C-sequestration mechanism in an agricultural Mediterranean soil. Soil with a history of C3 photosystem crop was amended with two maize composts from maize harvesting surpluses (C4 photosystem) with different maturity stages (AC: aged compost; NC: new, less mature compost). The evolution of SOM was monitored for 6 months using complementary analytical techniques, including analysis of stable C isotopes (IRMS), thermogravimetry (TG) and C-stock and priming effect (PE) modelling. Based on the natural C-isotope labelling, the proportion of new C was calculated. More than 50% of the C added to the soil with the compost was incorporated into the SOM in only 6 months. However, the application of maize compost did not always enhance soil C-sequestration capacity. The addition of compost caused a general PE, enhancing SOM decay and reducing the fast (labile) SOM mean residence time (MRT) (11.2 days). This was more pronounced with the addition of a higher dose of AC, causing a PE up to a 718%. On the other hand, a higher MRT (54.4 days) occurred in soils with NC applied, likely due to its deleterious effects, limiting heterotrophic activity. Despite that, the average MRT of the slow (recalcitrant) SOM pool was lower than usually reported. The application of higher doses of both composts generally showed greater MRT values compared to control (1.7 years vs. 3.8 and 2.9 years for NC and AC, respectively), leading to an increase in this more stable C pool and effective soil C sequestration. The results described in this work may help readers to better understand SOM dynamics and may be of use in designing appropriate management strategies for improving OM quantity and quality and to optimize C storage in Mediterranean soils.

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“…Amount of phosphorus and nitrate concentrations in the leachate also significantly decreased by adding each of the charcoal, sawdust and wood ash [13]. Other previous study reported that soil carbon as fulvic (10 to 20 cm) and humic acids (10 to 30 cm), and especially as humin (0 to 5 cm), increased due to increase charcoal which may be occurred by the role of the charcoal [14]. Moreover, charcoal and potassium were used to improve the growth and yield of flax plants, so from the results, the impact of both factors was clearly shown, which significantly improved the growth and productivity of flax, based on this finding do more researching on the charcoal and inorganic fertilizers on other crops are interested [15].…”

Section: Introductionmentioning

confidence: 66%

Comparative effects of humic acid and charcoal on soil, growth, and biomass properties of lupine (Lupinus albus L.)

Salih,

Shakir,

Mahmood

2024

JKAS

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Recently, charcoal and humic acid application in soils is a burgeoning area of research due to its profound impact on soil properties and crop yields. Charcoal contributes to improved soil structure, enhanced water-holding capacity, and increased carbon sequestration while humic acid, a component of organic matter, enhances nutrient retention and availability, fostering healthier plant growth and long-term soil health. The experiments were conducted on November 20, 2022, at Grdarasha Research Station, College of Agricultural Engineering Sciences, Salahaddin University-Erbil, Iraq. Two organic sources (humic acid and charcoal) were used to improve soil chemical properties, growth, and biomass characteristics of white lupines. Humic acid at the levels of (0, 10, and 15 g m-2), respectively along with 1 kg m-2 of charcoal. Results showed that essential elements and heavy metals in soil were increased and improved with adding humic acid and charcoal, and then well-affected root ability to uptake nutrients. The great values of germination rate, leaf number (LN), and fresh and dry shoot weights were found when charcoal was stirred to the soil (83.33%, 15.67 LN plant-1, 10.91, and 2.24 t ha-1), respectively. While the longest root length was recorded when humic acid applied at rate of 10 g m-2 (24.22 cm), it was true about the enhancement of cluster roots. Despite that, humic acid at the rate of 15 g m-2 caused to improve fresh and dry root and shoot weights, which were compared to control treatment. The final results indicated that by adding humic acid (H), and charcoal (CH) could improve soil chemical properties, and then may affect positively microorganisms, which can promote plant growth by transforming, solubilizing, and mobilizing soil nutrients. As well, lupinus seemed as phytoremediation (uptake) in case of some heavy metals.

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Charcoal Fine Residues Effects on Soil Organic Matter Humic Substances, Composition, and Biodegradability

Cited by 8 publications

References 62 publications

Effects of fire on soil organic matter in northern Amazonian forest fragments

Effects of fire on soil organic matter in northern Amazonian forest fragments

Evolution of Maize Compost in a Mediterranean Agricultural Soil: Implications for Carbon Sequestration

Comparative effects of humic acid and charcoal on soil, growth, and biomass properties of lupine (Lupinus albus L.)

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