Biowaste compost amendment modifies soil biogeochemical cycles and microbial community according to aggregate classes

Baiano, Salvatore; Fabiani, Arturo; Fornasier, Flavio; Ferrarini, Andrea; Innangi, Michele; Mocali, Stefano; Morra, Luigi

doi:10.1016/j.apsoil.2021.104132

Cited by 11 publications

(7 citation statements)

References 57 publications

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“…The AGROEC, furthermore, evidenced values of enzymatic activities involved in the C, N and P cycling, like the CNT in free-SC, but highest in macroaggregates, significantly highest for the phosphatase. These findings agree with those of Baiano et al (2021) which highlighted the ability of biowaste compost to increase enzymatic activities in macroaggregates, in particular the phosphatases. In AGROEC, we found also high values of bacterial biomass and amoA, confirming that also bacterial activity in AGROEC was important and that was linked to the high amount of SOC and TN.…”

Section: Response Sensitivities Of Soil Chemical-physical Properties ...supporting

confidence: 91%

“…At aggregate level, instead, more evident effects of organic systems were observed on both chemical-physical and microbial properties. The impact of organic systems on enzymatic activities, differed in the different aggregate size classes, as already observed by previous works (Baiano et al, 2021;Wang et al, 2017). The effect on bacterial biomass and functional genes, instead, was the same in all aggregate size classes in agreement with the results of Yao et al (2023), and with the statement of Liao et al (2018) that bacterial community is more influenced by fertilizer application than by aggregates.…”

Section: Response Sensitivities Of Soil Chemical-physical Properties ...supporting

confidence: 89%

“…Previous studies evidenced that organic amendment in soil poor of organic C increased soil enzymatic activities as a response to the increase in soil organic carbon in bulk soil, either in greenhouse (Iovieno et al., 2009) or in open field (Brennan & Acosta‐Martinez, 2017; Crecchio et al., 2004; Laudicina et al., 2011; Melero et al., 2007) as well as in soil aggregates (Baiano et al., 2021; Wang et al., 2022). These results indicate that biophysical processes associated with C‐ and N‐cycling enzymes may be vital to the SOC and TN sequestration within soil aggregates (Wang et al., 2022).…”

Section: Discussionmentioning

confidence: 97%

“…Consequently, microbial mineralization and enzymatic activity vary with different sizes of soil aggregates (Lagomarsino et al., 2009; Mendes et al., 1999). Recent studies, for example, have highlighted that soil aggregate size mediates the response of the microbial community to different soil management such as crop rotation (Li et al., 2018; Trivedi et al., 2015), fertilizer application (Baiano et al., 2021; Liao et al., 2022) and soil tillage (Bernhardt et al., 2022). Therefore, a second level of outcome of our research, also representing its innovation in the context of organic production under greenhouses, was to try to link the macroscopic SOC stock variation to the changes of chemical–physical and microbiological soil properties measured in three soil aggregates fractions (macroaggregates >250 μm, free‐microaggregates 250–53 μm and free silt plus clay <53 μm).…”

Section: Introductionmentioning

confidence: 99%

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Different organic farming systems under greenhouse do not improve soil C storage but affect microbial functions across soil aggregates

Baiano,

Picariello,

Canfora

et al. 2024

Soil Use and Management

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Vegetable crops production is usually based on organic fertilizers purchased off‐farm while the care of soil fertility based on the maintenance of adequate level of soil organic matter receives few attentions. Organic production in plastic tunnel‐greenhouses represents the most intensified organic production system. Therefore, we compared four alternative organic production systems mainly characterized by the combination of fertilization practices based on compost, cover crops, and commercial organic fertilizers. The systems were: input substitution organic method (BAU), biodynamic method (BIODYN), organic‐agroecological (AGROEC), and a not fertilized but organically managed control (CNT). The objective of this study was to explore in a 3‐year long trial, the effects of different organic systems on soil organic carbon (SOC) balance and the possible effects on soil chemical‐physical characteristics, enzymatic activities involved in the C, N, and P cycling, total bacterial biomass (16S rRNA), and the microbial functional genes cbbL and amoA in bulk soil and in three aggregate size fractions (macroaggregates >250 μm, free microaggregates 250‐53 μm, and free silt plus clay (free‐SC) < 53 μm). The conducive microclimatic conditions for soil microbial activities under the greenhouse, together with the transition towards a more intensive rotation and tillage, determined a decrease of the SOC stock (from 5.9 Mg C ha‐1 in BIODYN to 10.8 in CNT) that was only partially balanced by C input distributed to soil (from 4.6 Mg C ha‐1 in CNT to 31.6 in AGROEC). The different organic systems did not seem to directly affect chemical and microbial properties in the bulk soils. The higher SOC decline in CNT, however, resulted in the degradation of soil structure but at same time led to the increase of the FDAse in the bulk soil. At aggregate level, instead, more evident effects of organic systems were observed on both chemical‐physical and microbial properties. The impact of organic systems on enzymatic activities differed in the different aggregate size classes while the effect on bacterial biomass and functional genes was the same in all aggregate size classes. Interestingly, the cbbL gene abundance in soil aggregates, especially in macroaggregates, was correlated positively to OC inputs (r = 0.82; p < 0.001). The amoA gene and bacterial biomass, instead, put in evidence for BIODYN, a significant decrease in soil aggregates that seemed to be related, particularly in macro and free microaggregates, to the low amount of total N content. In soil aggregates only AGROEC, compared to CNT, determined the increment of the phosphatase in macroaggregates, while BIODYN and BAU highlighted even lower values of β‐d‐glucosidase, β‐d‐glucosaminidase, and phosphatase in free‐SC. In conclusion in high‐input organic systems under tunnels, the misleading notion that a high supply of OC and TN through green manuring, compost amendment etc., improves per se soil health is challenged.

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Section: Response Sensitivities Of Soil Chemical-physical Properties ...supporting

confidence: 91%

Section: Response Sensitivities Of Soil Chemical-physical Properties ...supporting

confidence: 89%

Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Different organic farming systems under greenhouse do not improve soil C storage but affect microbial functions across soil aggregates

Baiano,

Picariello,

Canfora

et al. 2024

Soil Use and Management

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, the impurities and contaminants that are usually released from CLO require increased attention [10]. CLO is considered one of the primary sources of microplastics (MPs) in the agricultural environment, negatively influencing soil microbial processes or plant growth [16]. Therefore, the use of CLO in land applications is limited and regulated to restore quarries, dumping sites, or road slopes [10,13,17].…”

Section: Introductionmentioning

confidence: 99%

Modeling the Life Cycle Inventory of a Centralized Composting Facility in Greece

2022

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Mechanical composting is a popular treatment method for the mechanically separated organic fraction of municipal solid wastes to stabilize the waste material and reduce its environmental impacts. The model and life cycle inventory database are created based on the existing centralized mechanical composting facility located in Chania (Crete, Greece). This study aims to assess all stages of the composting process, wherein input-output flows are comprehensively analyzed based on specific waste fragments. The transfer coefficients are calculated for each waste fragment throughout the processes. The degradation rate is measured as kg of C and N released per Mg of the treated material. The results show that process degradation rates are independent of the initial fragmental composition. This is the first study that accurately models the fate of distinctive waste fragments in a composting plant, while the developed life cycle inventory (with regard to mass and energy balances) can be applied to estimate the environmental impacts regarding mechanical composting the organic fraction of municipal solid wastes.

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Aggregate composition directly affects the characteristics of soil microbial and nematode communities in a chronosequence of Chinese fir plantations

Liao,

Ye,

Wang

2024

Land Degrad Dev

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Maintaining soil biological diversity is an effective approach in facilitating Chinese fir plantations' sustainable development. However, dynamic characteristics of soil microbial and nematode communities during Chinese fir planting remain unclear, particularly on the aggregate scales, which are the main sites of soil biological activity. Therefore, the research aims to explore how stand age (3, 9, 17, and 26 years) of Chinese fir plantations affects soil microbial biomass (including bacteria, fungi, and actinomycetes, based on the phospholipid fatty acid method), nematode abundances (including bacterivores, fungivores, plant parasites, and omnivores‐predators, based on the modified Baermann funnel method), and their diversity within aggregates of differing sizes (>2, 2–1, 1–0.25, and <0.25 mm). According to the findings, both aggregate size and stand age were major factors affecting soil microbes and nematodes in Chinese fir plantations. Specifically, soil microbial biomass (mainly bacteria), nematode abundances (except fungivores), and their diversity peaked within large macro‐aggregates (>2 mm), and the ranking order for stand ages was 17 > 9 ≈ 3 > 26 years. As the main fractions of soil aggregates in Chinese fir plantations, large macro‐aggregates had suitable internal environments for soil microbial propagation and nematode growth and mainly accumulated at 17 years, which caused the prosperity of soil microbes and nematodes at this stand age. Moreover, the partial least squares path model demonstrated that the influence of stand age on soil microbes and nematodes was indirect; but rather, the aggregate composition played a direct role in shaping their communities. Therefore, in order to maintain soil biological diversity, large macro‐aggregates should be protected during the growth of Chinese fir, especially at the late stage (from 17 to 26 years). Overall, these results could provide valuable insights into Chinese fir plantations' sustainable development.

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Biowaste compost amendment modifies soil biogeochemical cycles and microbial community according to aggregate classes

Cited by 11 publications

References 57 publications

Different organic farming systems under greenhouse do not improve soil C storage but affect microbial functions across soil aggregates

Different organic farming systems under greenhouse do not improve soil C storage but affect microbial functions across soil aggregates

Modeling the Life Cycle Inventory of a Centralized Composting Facility in Greece

Aggregate composition directly affects the characteristics of soil microbial and nematode communities in a chronosequence of Chinese fir plantations

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