Biogas digestates affect crop P uptake and soil microbial community composition

Hupfauf, Sebastian; Bachmann, Silvia; Juárez, Marina Fernández-Delgado; Insam, Heribert; Eichler‐Löbermann, Bettina

doi:10.1016/j.scitotenv.2015.09.025

Cited by 53 publications

(23 citation statements)

References 57 publications

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“…The microbial activities (activity of dehydrogenase) were about three to five times higher in the grassland soil than in the soil of the arable systems (Table 2), which is most probably related to the higher soil organic C contents (Table 1). It is well documented that an increase in soil organic matter enhances microbial biomass and the microbial activity of soils (Hupfauf et al 2016). A higher microbial activity indicates a greater potential for mineralizing nutrients from organic compounds, which can replenish the labile inorganic soil P pools.…”

Section: Activities Of Enzymes In Soilmentioning

confidence: 99%

Long-term negative phosphorus budgets in organic crop rotations deplete plant-available phosphorus from soil

Ohm¹,

Paulsen²,

Moos³

et al. 2017

Agron. Sustain. Dev.

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In organic farming, phosphorus (P) can be imported in mineral form with rock phosphate, feedstuff for livestock or suitable organic fertilizers. Many organic farmers, however, rely on biological activation of soil P reserves and tolerate P deficits, not knowing when soil reserves will be depleted. We hypothesized that under conditions of a long-term negative P budget in organic farming, the decline in readily available soil P pools would be less pronounced in dairy systems (arable land and grassland) than in stockless systems (arable land), due to higher shares of forage legumes in crop rotations, longer plant soil coverage, and manure backflow. From 2001 to 2013, we analyzed those systems on one site in North Germany. We assessed topsoil for plant-available soil P concentration [P(CAL)], mineral soil P fractions (Hedley), organic P, acid and alkaline phosphatase, and microbial activity (dehydrogenase). We measured P(CAL) each year on all fields of the crop rotations and grassland. The other soil characteristics were determined only in selected fields in 2001, 2009, and 2013. We observed that in grassland, all mineral P fractions, organic P contents, and microbial activity were considerably higher than in arable fields. On average, soil P(CAL) content decreased significantly in all systems (stockless arable −1.71, dairy arable −1.41, grassland −3.18 mg P kg −1 year −1), but the soil threshold value deemed to be sufficient for P supply (>44 mg kg −1) was preserved. The readily available inorganic P fractions (H 2 O-P, NaHCO 3-P) were also lower in 2013 than in 2001. Our data does not support a different development in either arable system. We could show that higher shares of forage legumes and manure recycling in an organic mixed arable dairy crop rotation and grassland do not necessarily mitigate decreases of plant-available P contents in soil as compared to a stockless system.

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Section: Activities Of Enzymes In Soilmentioning

confidence: 99%

Long-term negative phosphorus budgets in organic crop rotations deplete plant-available phosphorus from soil

Ohm¹,

Paulsen²,

Moos³

et al. 2017

Agron. Sustain. Dev.

Self Cite

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“…On the other hand, these properties play a crucial role when introducing biogas residues or other exogenous organic matter into the soil as organic fertilizers, because they may change soil properties in a positive or negative manner (Frąc et al 2012;Malý 2015). Residues incorporated into the soil may impose an additional load of microorganisms and affect the microbial community of soil (Hupfauf et al 2016). The microbial genetic composition and metabolic capabilities may affect the course of the microbial process and the efficiency of organic material turnover in soil (Oszust et al 2015).…”

Section: Resultsmentioning

confidence: 99%

Characterization of microbial functional and genetic diversity as a novel strategy of biowaste ecotoxicological evaluation

Oszust

Gryta

Ziemiński

et al. 2018

Int. J. Environ. Sci. Technol.

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The goal was to elucidate the importance of the waste properties for effective exploitation in biogas production and for soil application, respectively, based on the physicochemical and microbial characterization of biowaste and the corresponding biogas residues. The following waste media were chosen: fruit waste, dairy sewage sludge, corn silage, grass silage, and grain brew to prepare three co-substrates for anaerobic bioconversion. The most satisfactory biogas yield was obtained from biowaste with the following composition: 25% fruit wastes, 25% dairy sewage sludge, 12% corn silage, and 38% grain brew. The study included functional and genetic diversity assessment through the characterization of the catabolic potential and structure of the microbial communities inhabiting the examined organic wastes and their relative biogas residues. The metabolome was based on the use of a Biolog ® plate. The elucidation of the metagenome employed the genetic structure of prokaryotes and involved denaturing gradient gel electrophoresis and next-generation sequencing analyses. The usefulness of metagenomics was emphasized by ecotoxicological evaluation of biowaste and in determining the accurate start-up community composition for biogas production, highlighting the pivotal role of anammox and hydrolytic bacteria as marker groups. The high importance of the great diversity of fungi was also revealed based on a functional approach.

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“…The prokaryotic community structure of the treatments reported by Wang [82] was evaluated, and the results showed that Mix2 treatment, in which low NO 3 − risk and high nematode suppression were confirmed, was separated from the other treatments, indicating that a specific microbial community was developed in the treatment (Figure 2). Several papers have already reported that the application of biogas digestate affected the community structure of bacteria and fungi [122][123][124]. In general, organic amendment stimulates a broad range of (micro) organisms involved in the soil food web, many of which are potential predators, such as diplogasterid [125] and dorylaimid [126], or invertebrate antagonists, such as enchytraeids and earthworms [127].…”

Section: Effect Of Biogas Digestate Application On Root-knot Nematodementioning

confidence: 99%

Dry Anaerobic Digestion for Agricultural Waste Recycling

Riya¹,

Meng²,

Wang³

et al. 2021

Biogas - Recent Advances and Integrated Approaches

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For sustainable agriculture, it is important to manage agricultural wastes, such as crop residues and livestock wastes. Anaerobic digestion has been gathering the attention to recycle these wastes into renewable energy (biogas) and fertilizer (soil amendment) (digestate). Dry anaerobic digestion is defined as digestion at higher than 20% of total solid (TS) content in the reactor, which is suitable for wastes with high TS content, such as agricultural wastes. In this chapter, we reviewed recent advances in biogas production and use of digestate as soil amendment from dry anaerobic digestion of agricultural wastes. It has been found that ammonia concentration, feed/inoculum (F/I) ratio, and TS content are important parameters for operation of dry anaerobic digestion. Several operation technologies have been in operation, while new operation strategies have been developed. Application of solid digestate into the soil is beneficial to increase soil properties; however it should be carefully operated because it has risks of nitrate leaching and soil pathogens.

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Biogas digestates affect crop P uptake and soil microbial community composition

Cited by 53 publications

References 57 publications

Long-term negative phosphorus budgets in organic crop rotations deplete plant-available phosphorus from soil

Long-term negative phosphorus budgets in organic crop rotations deplete plant-available phosphorus from soil

Characterization of microbial functional and genetic diversity as a novel strategy of biowaste ecotoxicological evaluation

Dry Anaerobic Digestion for Agricultural Waste Recycling

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