Do interactions between application rate and native soil organic matter content determine the degradation of exogenous organic carbon?

Mendoza, Orly; Deroo, Heleen; Li, Haichao; Sleutel, Steven

doi:10.1016/j.soilbio.2021.108473

Cited by 21 publications

(19 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This result is consistent with the study of Mendoza et al. (2022), which might be attributed to microorganisms frequently use labile C derived from crop residues to synthesize biomass in soil with low SOC, while the increase of microbial individuals occurs in soil with high SOC (Morrissey et al., 2017).…”

Section: Discussionsupporting

confidence: 92%

“…The results showed that PE decreased with increasing C addition ratio in the soil with SOC less than 10‰; in contrast, the opposite pattern was in the case of soil with SOC exceeding 10‰ (Figure S3). This result is consistent with the study of Mendoza et al (2022), which might be attributed to microorganisms frequently use labile C derived from crop residues to synthesize biomass in soil with low SOC, while the increase of microbial individuals occurs in soil with high SOC (Morrissey et al, 2017).…”

Section: Reasons For the Differences In Crop Residues Induced Pesupporting

confidence: 91%

“…Previous studies (Gaudel et al., 2021; Sun et al., 2019; Zhang et al., 2013) showed that PE increased with increasing EOM, which was attributed to the activated microbial growth by the increase of C addition. In contrast, native microorganisms (especially the K ‐strategists) preferentially decompose EOM at high C addition ratio, thereby weakening the positive PE (Blagodatskaya et al., 2007; Mendoza et al., 2022). Moreover, the high C addition ratio may also increase the porosity of the soil, which is conducive to the colonization of protozoa (swallowing bacteria) and fungi (playing a leading role in the degradation of cellulose) linked with negative PE (Vos et al., 2021).…”

Section: Discussionmentioning

confidence: 99%

“…For instance, crop residues with lower C/N ratios and more labile compounds lead to a lower positive PE due to microbial preference for crop residues over SOC (Shahbaz, Kuzyakov, et al., 2017). Increasing crop residue quantities in soils with SOC content of 0.1% and 0.5% decrease PE by increasing the share of R ‐strategists or inducing an ingestion switch of K ‐strategists from SOM to EOM (Mendoza et al., 2022). High soil temperatures reduce PE induced by crop residues as the rapid growth of microorganisms at high temperatures immobilizes soil N while limiting SOC mineralization (Zhang et al., 2020).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Carbon emissions and priming effects derived from crop residues and their responses to nitrogen inputs

Qin,

Chen,

Scriber

et al. 2024

Global Change Biology

View full text Add to dashboard Cite

Crop residue‐derived carbon (C) emissions and priming effects (PE) in cropland soils can influence the global C cycle. However, their corresponding generality, driving factors, and responses to nitrogen (N) inputs are poorly understood. As a result, the total C emissions and net C balance also remain mysterious. To address the above knowledge gaps, a meta‐analysis of 1123 observations, taken from 51 studies world‐wide, has been completed. The results showed that within 360 days, emission ratios of crop residues C (ER) ranged from 0.22% to 61.80%, and crop residues generally induced positive PE (+71.76%). Comparatively, the contribution of crop residue‐derived C emissions (52.82%) to total C emissions was generally higher than that of PE (12.08%), emphasizing the importance of reducing ER. The ER and PE differed among crop types, and both were low in the case of rice, which was attributed to its saturated water conditions. The ER and PE also varied with soil properties, as PE decreased with increasing C addition ratio in soils where soil organic carbon (SOC) was less than 10‰; in contrast, the opposite phenomenon was observed in soils with SOC exceeding 10‰. Moreover, N inputs increased ER and PE by 8.31% and 3.78%, respectively, which was predominantly attributed to (NH4)2SO4. The increased PE was verified to be dominated by microbial stoichiometric decomposition. In summary, after incorporating crop residues, the total C emissions and relative net C balance in the cropland soils ranged from 0.03 to 23.47 mg C g−1 soil and 0.21 to 0.97 mg C g−1 residue‐C g−1 soil, respectively, suggesting a significant impact on C cycle. These results clarify the value of incorporating crop residues into croplands to regulate global SOC dynamics and help to establish while managing site‐specific crop return systems that facilitate C sequestration.

show abstract

Section: Discussionsupporting

confidence: 92%

Section: Reasons For the Differences In Crop Residues Induced Pesupporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Carbon emissions and priming effects derived from crop residues and their responses to nitrogen inputs

Qin,

Chen,

Scriber

et al. 2024

Global Change Biology

View full text Add to dashboard Cite

show abstract

“…In line with the above-discussed factors, in the pot experiment, the addition of digestate did not have any significant effect on soil TOC (Alburquerque et al 2012c;Huygens et al 2020;Möller 2015;Riva et al 2016). An increase in soil TOC should be associated with the vegetation (root exudates or plant material debris) (Mendoza et al 2022). The TN concentrations in the digestates (dry matter basis) are within the range found by Reuland et al (2022) for digestates of different origins.…”

Section: Discussionsupporting

confidence: 59%

Carbon and Nitrogen Mineralisation in Soils and Nutrient Efficiency of Digestates from Fruit and Vegetable Wastes

Álvarez-Alonso

Clemente

Bernal

2022

J Soil Sci Plant Nutr

View full text Add to dashboard Cite

A significant amount of fruit and vegetable wastes is generated annually in markets, supermarkets, restaurants and households. Anaerobic digestion allows their appropriate management and helps to complete the cycle of the circular economy as it converts wastes into resources: biogas, a renewable source of energy, and digestate, rich in nutrients of interest for agriculture. The aim of this study was to define the agronomic value of digestate from fruit and vegetable wastes. Two digestates from fruit and vegetable residues were used in incubation experiments for C and N mineralisation in the soil, and in a pot experiment with crops (cardoon and maize), to calculate their fertiliser potential in comparison with a mineral fertiliser. The digestate quickly mineralised in the soil and nitrification processes led to fast formation of NO3−-N. However, increasing the digestate application rate enhanced N-immobilisation and reduced N-mineralisation in the soil. The addition of digestates to the soil resulted in adequate plant growth and nutrient composition, without any negative effects on the plants or soil. However, special attention should be paid to the salt accumulation in the soil for long-term digestate application. The nutrient recovery efficiency indicated that digestate could replace mineral fertiliser completely in cardoon crops and partially (44.5–82.6%) for maize, with an associated economic benefit. The salinity of the digestates limits their quality and their agricultural use to salt-sensitive crops should be limited.

show abstract

Ameliorating saline‐sodic soils: A global meta‐analysis of field studies on the influence of exogenous amendments on crop yield

Wang,

Ding,

Wang

et al. 2024

Land Degrad Dev

View full text Add to dashboard Cite

As the demand for food continues to rise, soil salinization and sodification pose an increasingly pressing challenge. Currently, there is a knowledge gap regarding how to effectively improve saline‐sodic soils to support sustainable agricultural production, especially the lack of systematic analysis on the effects of different amendments at a global scale. To address this gap, this study aims to explore the feasibility of using exogenous amendments to ameliorate saline‐sodic soils, conducting a global‐scale meta‐analysis based on 685 data pairs from 70 published studies. Our results showed that applying amendments to saline‐sodic soils significantly reduced electrical conductivity of saturated paste extract (ECe) by 33.0% and exchangeable sodium percentage (ESP) by 44.6%, while simultaneously increasing crop yield by 50.7%. Heterogeneity analysis further unveiled significant variations (p < 0.05) in the overall effect size, driven by factors such as initial soil properties (salinity and ESP levels), amendment type, climate and practical management conditions (application dose and experimental duration). The categorical variable analysis showed that, compared to soils with other salinization levels, the application of amendments in severe salinization soils was most effective in reducing soil ECe and enhancing crop yield. Considering the goals of mitigating soil salinity, sodicity, and increasing crop yield, the study suggests the application of mixed‐type amendments in practical settings. It is noteworthy that while extremely high doses (greater than 40 t ha−1) effectively increased crop yield, they also posed a risk of salt accumulation. In conclusion, this research offers critical insights for sustainable agriculture, guiding future work on soil health and food security in the context of global environmental challenges.

show abstract

Do interactions between application rate and native soil organic matter content determine the degradation of exogenous organic carbon?

Cited by 21 publications

References 41 publications

Carbon emissions and priming effects derived from crop residues and their responses to nitrogen inputs

Carbon emissions and priming effects derived from crop residues and their responses to nitrogen inputs

Carbon and Nitrogen Mineralisation in Soils and Nutrient Efficiency of Digestates from Fruit and Vegetable Wastes

Ameliorating saline‐sodic soils: A global meta‐analysis of field studies on the influence of exogenous amendments on crop yield

Contact Info

Product

Resources

About