Carbon and nitrogen balances and CO<sub>2</sub> emission after exogenous organic matter application in arid soil

Chaker, Rayda; Gargouri, Kamel; Maktouf, Sameh; Palese, Assunta Maria; Celani, Giuseppe; Bouzid, Jalel

doi:10.1080/17583004.2018.1544829

Cited by 10 publications

(3 citation statements)

References 62 publications

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“…A particular focus is on amending soil with highly humified compost either alone (Spaccini & Piccolo, ) or co‐processed with metal nanoparticles (Zeng et al, ; Zhang et al, , ). In fact, while addition of fresh animal or green manure (GM) to soils poorly contributes to stock OC and reduce GHG emissions, soil amendments with composted OM is found to significantly stabilise humus in soil (Chaker et al, ; Jeong, Cho, Lee, Kim, & Kim, ; Maltas, Kebli, Oberholzer, Weisskopf, & Sinaj, ). Compost contains a greater amount of stable humified components than the original fresh biomasses, thereby enabling the mechanism of hydrophobic protection of SOM (Piccolo et al, ; Spaccini & Piccolo, ).…”

Section: Introductionmentioning

confidence: 99%

Amendments with humified compost effectively sequester organic carbon in agricultural soils

Spaccini¹,

Piccolo²

2020

Land Degrad Dev

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Preventing degradation of soil quality and productivity entails development of sustainable practices to enhance soil organic matter. We followed soil organic carbon (OC) accumulation during 3 years long‐field experiments in two different Italian soils under conventional tillage (TRA), reduced tillage (MIN), green manure (GM) and two rates (low, CMPL, and, high, CMPH) of mature compost amendments. Despite soil textures differences, CMP additions enhanced in both field sites OC accumulation in either bulk soils or water‐stable aggregates (WSA), especially for CMPH, that was more pronounced than for MIN and GM. While the sum of OC in WSA showed an average retention of 80–90% of cumulative carbon added with compost, incorporated OC in WSA of MIN and GM reached only 26 and 55% of total carbon amended with fresh biomass for the light and heavy textured soils, respectively. Hence, MIN and GM accumulated SOC only up to the physical saturation limit dictated by soil texture, whereas CMP retained a larger additional SOC than TRA due to hydrophobic affinity among apolar domains progressively added to soil with humified compost. Nuclear magnetic resonance spectra of humus extracted after the first and third treatment year confirmed this behaviour. While no changes were observed in spectra for MIN and GM, humic extracts from CMP showed significantly larger content of apolar alkyl and aromatic moieties after the third experimental year. Our results suggest that soil amendment with well humified compost is an effective practice to sequester carbon into agricultural soils, besides improving their organic fertility.

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Section: Introductionmentioning

confidence: 99%

Amendments with humified compost effectively sequester organic carbon in agricultural soils

Spaccini¹,

Piccolo²

2020

Land Degrad Dev

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“…Thus, there is a huge potential for carbon sequestration in farmland in China. Previous studies illustrated that the application of exogenous organic materials was the Plants 2022, 11, 2194 2 of 13 most long-term and effective means of soil carbon sequestration [10][11][12]. Moreover, the application of organic materials could increase soil organic matter content and improve soil structure and soil fertility [7,13].…”

Section: Introductionmentioning

confidence: 99%

Responses of Soil Carbon Pools and Carbon Management Index to Nitrogen Substitution Treatments in a Sweet Maize Farmland in South China

Chen

Liu

Cai

et al. 2022

Plants

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In China, excessive nitrogen fertilizer application in sweet maize fields contributes to greenhouse gas emissions. This study used maize straw (MS), cow dung (CD), biogas residue (BR), and straw-based biochar (CB) to substitute the mineral nitrogen fertilizer at 20% and 50% ratios in the Pearl River Delta in China. In comparison with a conventional amount of mineral nitrogen fertilizer (CK), the soil organic carbon (SOC) storages of the different treatments increased by 6.5–183.0%. The CB treatment significantly improved the inert organic carbon pool in the soil, while other types of organic materials promoted the formation of activated carbon pools. The treatments increased the soil carbon pool management index by 21.1–111.0% compared to the CK. Moreover, the CB treatments increased the soil carbon sequestration index by 78.3% and 155.8% compared to the CK. In general, substituting the mineral N fertilizer with BR, CB, and CD could improve the SOC accumulation in sweet maize farmland in South China. The CB at the high substitution level was the best measure for stabilizing carbon sequestration in the sweet maize cropping system. This experiment provides valuable information for ensuring the clean production of sweet maize in a typical subtropical area in East Asia.

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“…(1:5 w/v) utilizing a pH meter (Mettler Toledo MP 225). The EC was measured on the liquid extract of the saturated paste after 4h of rest as cited inChaker et al (2019) and measured with a conductivity meter (AME 123) at 25°C. Organic carbon content was determined by dichromate oxidation following Walkley and Black method(Pauwels et al 1992).…”

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confidence: 99%

Long-term tillage practices effects on soil organic matter humification and Humic acids structural changes in soil profiles typical of an arid region

Mahmoud

Gargouri

SÁNCHEZ-BELLÓN

et al. 2023

Preprint

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Soil organic matter (SOM) humification and changes in molecular structures of humic acids (HAs) induced by long term practices management over soil profile have been scarcely investigated in arid climates. This study aims to assess SOM humification, HAs molecular structures changes over soil profiles induced by long- term tillage practices under arid climate in south-eastern Tunisia. Two experimental fields were studied: cultivated soil with olive tree and tilled for long term (CT); uncultivated without any practices with native vegetation (NT). Soil samples were collected at different depths from (CT) and (NT) profiles to determine chemical properties. Humic acids were isolated and studied by measuring UV-visible ratios (E465/665, E280/664 and E472/664) and fluorescence spectroscopy analysis. Results showed that long-term tillage practices reduced the SOM amount, aromatic condensation, molecular size and humification degree in surface layer of CT confirmed by the decrease in the emission fluorescence areas and UV- visible ratios. Inversely, in deep layers, results showed a greatly humified organic matter and aromatic structures condensation in CT. Long-term tillage leads to a significant decrease in aromatic condensation and OM humification degree in surface layers. Soil under no-tillage retains their aromatic chemical structures and increases OM humification degree. No-till System is the best alternative to maintain OM chemical structures and restore soil quality underlong- term practices management.

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Carbon and nitrogen balances and CO₂ emission after exogenous organic matter application in arid soil

Cited by 10 publications

References 62 publications

Amendments with humified compost effectively sequester organic carbon in agricultural soils

Amendments with humified compost effectively sequester organic carbon in agricultural soils

Responses of Soil Carbon Pools and Carbon Management Index to Nitrogen Substitution Treatments in a Sweet Maize Farmland in South China

Long-term tillage practices effects on soil organic matter humification and Humic acids structural changes in soil profiles typical of an arid region

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Carbon and nitrogen balances and CO2 emission after exogenous organic matter application in arid soil

Cited by 10 publications

References 62 publications

Amendments with humified compost effectively sequester organic carbon in agricultural soils

Amendments with humified compost effectively sequester organic carbon in agricultural soils

Responses of Soil Carbon Pools and Carbon Management Index to Nitrogen Substitution Treatments in a Sweet Maize Farmland in South China

Long-term tillage practices effects on soil organic matter humification and Humic acids structural changes in soil profiles typical of an arid region

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Carbon and nitrogen balances and CO₂ emission after exogenous organic matter application in arid soil