Organic Matter and Humic Fractions of a Haplic Acrisol as Affected by Composted Pig Slurry

Lüdtke, A.C.; Dick, Deborah Pinheiro; Aita, Celso; Pavan, Bruno Ettore; Morosino, Luiza; Doneda, Alexandre; Cantú, Rafael Ricardo

doi:10.5935/0100-4042.20160001

Cited by 3 publications

(3 citation statements)

References 3 publications

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“…The elemental composition, ash %, C/N ratio, H/C and O/C atomic ratios, and the polarity index [(O+N)/C] of HA and FA are reported in table 5. The C, H, N, and O % values of HA (C = 45.7-54.5 %, H = 4.7-5.9 %, N = 4.1-5.0 %, O = 34.7-45.6 %) and FA (C = 27.0-44.2 %, H = 3.7-4.6 %, N = 2.5-4.4 %, O = 46.8-66.6 %) are in agreement with values commonly observed for HS extracted from soil (Dick et al, 1998;Canellas et al, 2001;Dick et al, 2003;Tan, 2014;Lüdtke et al, 2016). 55 53 55 55 58 65 59 58 58 23 23 20 20 18 17 14 22 20 22 18 19 20 20 19 19 17 15 18 17 4 5 5 5 5 4 4 4 The HA of the CM+PS treatment showed the greatest C and N % values, higher H % compared to all treatments except CM+FRW, and the lowest O %, suggesting a less oxidized HA (Moraes et al, 2011).…”

Section: Elemental Composition and Ftir Analysis Of Humic And Fulvic supporting

confidence: 91%

Humic Substances and Chemical Properties of an Acrisol Amended with Vermicomposted Vegetal and Animal Residues

Antunes

Leal

Castilhos

et al. 2019

Rev. Bras. Ciênc. Solo

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Vermicomposted vegetal and animal residues are rich in nutrients and humic substances and thus can be applied to the soil as a source of functionalized organic matter (OM) and as an alternative to chemical fertilizers. In Southern Brazil, many animal and vegetal residues are easily accessible. Therefore, this study aimed to evaluate alterations in soil chemical properties and OM chemical composition in response to the application of local vermicomposted residues. The vermicomposts of: cattle manure (CM), sheep manure (SM), rice parboiling sludge (PS), CM+PS; SM+PS; CM+food waste (FW); SM+FW; CM+fruit waste (FRW); and SM+FRW were mixed with Acrisol (Argissolo) samples collected at 0.00-0.20 m layer, and the samples were incubated in plastic bags for 182 days. Soil samples without vermicomposts were also incubated (control). Overall, vermicomposts increased soil pH(H 2 O), exchangeable Ca and available P and K contents. The treatments with CM or SM with FW promoted carbon accumulation in the soil compared to the control, especially as humin. The humic acids of SM and PS were more oxygenated than the others, and oxygenation was apparently associated with aromatic structures. Fulvic acids of CM+PS showed the greatest oxygenation and aliphatic character. The relationship between vermicompost origin (animal or vegetal) and soil properties or OM composition was not clear. Aromaticity degree (H/C) and C/N ratio were similar in fulvic and humic acids, and oxygenation degree (O/C) as well as polarity index [(O+N)/C] were more efficient parameters to distinguish these humic fractions. We concluded that vermicomposts derived from cheap and easily available vegetal and animal residues in Southern Brazil have great potential as alternative fertilizers as well as sources of functionalized OM when applied to the soil, especially vermicomposts of rice parboiling sludge and cattle or sheep manure mixed with food waste.

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Section: Elemental Composition and Ftir Analysis Of Humic And Fulvic supporting

confidence: 91%

Humic Substances and Chemical Properties of an Acrisol Amended with Vermicomposted Vegetal and Animal Residues

Antunes

Leal

Castilhos

et al. 2019

Rev. Bras. Ciênc. Solo

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“…Agriculture produces a number of bioresources or processing residues that could be potentially recycled back to land as secondary sources of P. Bioresources have the added advantage over mineral fertilizers in that they contain useful organic matter and water holding properties for improving general soil quality and reducing P fixation in tropical environments 34 – 36 .…”

Section: Resultsmentioning

confidence: 99%

Transitions to sustainable management of phosphorus in Brazilian agriculture

Withers

Rodrigues

Soltangheisi

et al. 2018

Sci Rep

211

161

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Brazil’s large land base is important for global food security but its high dependency on inorganic phosphorus (P) fertilizer for crop production (2.2 Tg rising up to 4.6 Tg in 2050) is not a sustainable use of a critical and price-volatile resource. A new strategic analysis of current and future P demand/supply concluded that the nation’s secondary P resources which are produced annually (e.g. livestock manures, sugarcane processing residues) could potentially provide up to 20% of crop P demand by 2050 with further investment in P recovery technologies. However, the much larger legacy stores of secondary P in the soil (30 Tg in 2016 worth over $40 billion and rising to 105 Tg by 2050) could provide a more important buffer against future P scarcity or sudden P price fluctuations, and enable a transition to more sustainable P input strategies that could reduce current annual P surpluses by 65%. In the longer-term, farming systems in Brazil should be redesigned to operate profitably but more sustainably under lower soil P fertility thresholds.

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“…The HA fraction had increases of 47, 46, 43, 39, 33, and 32%, respectively, in the treatments PS100, MF+PS, MF, PS200, PS25, and PS50 when compared to the control. Predominance of more recalcitrant fractions was also shown by Lüdtke et al (2016), who found more than 50% for the HU fraction in an Ultisol and relative increases in concentrations of HA and HU in treatments with PS application.…”

Section: Resultsmentioning

confidence: 56%

Accumulation of humic substances in an Oxisol fertilized with pig slurry for 15 years

Sacomori

Cassol

Mafra

et al. 2021

Rev. bras. eng. agríc. ambient.

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The growth of swine production in Brazil has increased the amount of production and use of pig slurry (PS) as soil fertilizer. This product provides nutrients to plants, and a continuous application of this residue usually increases total soil organic carbon (SOC) content. The objective of this study was to determine the SOC content and its distribution into humic substance fractions (humic acids, fulvic acids, and humin) in an Oxisol annually fertilized with PS for 15 years. The experiment was implemented in 2001 with a maize and oat crop rotation under no-tillage system in Campos Novos, SC, Brazil. The treatments used were: PS at rates of 0 (Control), 25, 50, 100, and 200 m3 ha-1 year-1, mineral fertilizer, and PS combined with mineral fertilizer, applied on the soil surface once a year. The 0-2.5, 2.5-5, 5-10, 10-20, 20-40, and 40-60 cm soil layers were evaluated for SOC content in the fractions humic acid, fulvic acid, and humin, and E4/E6 ratio of humic substances. Increases in PS rates up to 100 m3 ha-1 increased the SOC content in the 5-10 cm soil layer; however, decreased the proportion of the soil fulvic acid and humic acid fractions, favoring the accumulation of organic carbon in the humin fraction. The E4/E6 ratio was higher when using the soil mineral fertilizer than that found in treatments with PS.

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Organic Matter and Humic Fractions of a Haplic Acrisol as Affected by Composted Pig Slurry

Cited by 3 publications

References 3 publications

Humic Substances and Chemical Properties of an Acrisol Amended with Vermicomposted Vegetal and Animal Residues

Humic Substances and Chemical Properties of an Acrisol Amended with Vermicomposted Vegetal and Animal Residues

Transitions to sustainable management of phosphorus in Brazilian agriculture

Accumulation of humic substances in an Oxisol fertilized with pig slurry for 15 years

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