The potential of digestate as a biofertilizer in eroded soils of Lithuania

Šlepetienė, Alvyra; Volungevičius, Jonas; Jurgutis, Linas; Liaudanskienė, Inga; Amalevičiūtė-Volungė, Kristina; Šlepetys, J.; Cesevičienė, Jurgita

doi:10.1016/j.wasman.2019.11.008

Cited by 59 publications

(16 citation statements)

References 21 publications

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“…Digestate positively affects primarily biological soil properties [30] and topsoil physiological properties [31]. Application of the solid part of the digestate can increase the soil quality, including soil C pool, significantly, while the effect of the liquid part on the soil properties is lower [32]. The effect of digestate on the SOC content can be positive [33,34] or neutral [30].…”

Section: Introductionmentioning

confidence: 99%

The Soil Organic Matter in Connection with Soil Properties and Soil Inputs

et al. 2021

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The content of organic matter in the soil, its labile (hot water extractable carbon–HWEC) and stable (soil organic carbon–SOC) form is a fundamental factor affecting soil productivity and health. The current research in soil organic matter (SOM) is focused on individual fragmented approaches and comprehensive evaluation of HWEC and SOC changes. The present state of the soil together with soil’s management practices are usually monitoring today but there has not been any common model for both that has been published. Our approach should help to assess the changes in HWEC and SOC content depending on the physico-chemical properties and soil´s management practices (e.g., digestate application, livestock and mineral fertilisers, post-harvest residues, etc.). The one- and multidimensional linear regressions were used. Data were obtained from the various soil´s climatic conditions (68 localities) of the Czech Republic. The Czech farms in operating conditions were observed during the period 2008–2018. The obtained results of ll monitored experimental sites showed increasing in the SOC content, while the HWEC content has decreased. Furthermore, a decline in pH and soil´s saturation was documented by regression modelling. Mainly digestate application was responsible for this negative consequence across all soils in studied climatic regions. The multivariate linear regression models (MLR) also showed that HWEC content is significantly affected by natural soil fertility (soil type), phosphorus content (−30%), digestate application (+29%), saturation of the soil sorption complex (SEBCT, 21%) and the dose of total nitrogen (N) applied into the soil (−20%). Here we report that the labile forms (HWEC) are affected by the application of digestate (15%), the soil saturation (37%), the application of mineral potassium (−7%), soil pH (−14%) and the overall condition of the soil (−27%). The stable components (SOM) are affected by the content of HWEC (17%), soil texture 0.01–0.001mm (10%), and input of organic matter and nutrients from animal production (10%). Results also showed that the mineral fertilization has a negative effect (−14%), together with the soil depth (−11%), and the soil texture 0.25–2 mm (−21%) on SOM. Using modern statistical procedures (MRLs) it was confirmed that SOM plays an important role in maintaining resp. improving soil physical, biochemical and biological properties, which is particularly important to ensure the productivity of agroecosystems (soil quality and health) and to future food security.

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Section: Introductionmentioning

confidence: 99%

The Soil Organic Matter in Connection with Soil Properties and Soil Inputs

et al. 2021

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“…The application of organic wastes generally leads to an increase in the concentration of carbon compounds in soils which were indicated in numerous studies [11,18,19]. Some authors reported that organic wastes enhanced soil organic matter content proportionally to the application doses and/or frequency [11,15,17].…”

Section: Exogenous Organic Matter Accumulation Dynamicsmentioning

confidence: 95%

The effect of application of digestate and agro-food industry sludges on Dystric Cambisol porosity

et al. 2020

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The spatial arrangement and pore size distribution play an important role in accumulation and protection of exogenous organic matter (EOM) in the soil, but how different organic materials contribute to modify pore structure is poorly understood. We aimed at exploring possible changes in the complexity of the soil phase during fertilization with different doses of digestate and sludges sourced from the agro-food industry. For this purpose, the shortterm effects-one year, of soil fertilization, were investigated in several sampling periods and within two depths (0-25 cm and 25-40 cm). Changes in the specific surface area (SSA), total pore volume (V MIP), total pore area (S MIP), average pore radius (R MIP) and pore size distribution (PSD) were monitored using N 2 adsorption/desorption (NAD) and mercury porosimetry (MIP) methods. Our results showed that the intensity of observed changes depended on the type and dose of organic material, soil depth and sampling date. Accumulation of EOM increased with soil depth, masking a large proportion of SSA. Deeper soil layer was more susceptible to changes in the pore size distributions due to the formation of new elongated pores. We concluded that this specific structural porosity was related to the decomposition of organic matter during the formation of soil aggregates.

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“…Also, the pesticides utilized to fight against plant illness affect the beneficial natural insect, soil fertility and soil microbiota adversely (Khatoon et al, 2020), and obviously additionally impact human well-being. Alongside, the soil acidity due to these strong chemicals is also altered (Slepetiene et al, 2020). Anthropogenic activities are liable to cause ecological damage and deter soil health, ultimately depleting the nonrenewable assets.…”

Section: Introductionmentioning

confidence: 99%

Insight Into the Role of PGPR in Sustainable Agriculture and Environment

Mohanty

Singh

Chakraborty

et al. 2021

Front. Sustain. Food Syst.

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A multitude of roles is played by microbes in food and agriculture that include nutrient cycling and management, organic matter decomposition and fermentation. Plant growth promoting rhizobacteria (PGPR), representing microbial groups and with ability of colonizing plant roots, influence plant growth through various indirect and direct modes in order to promote its growth and/or protect it from diseases or damage due to insect attack. Thus, PGPR research has received renewed interest worldwide. Increasing number of crop-specific PGPR are being commercialized these days. Approaches like seed-inoculation and soil application either alone or in combination with bacterial culture/product for increased nutrient availability through phosphate solubilisation, potassium solubilisation, sulfur oxidation, nitrogen fixation, iron, and copper chelation are gaining popularity. Arbuscular mycorrhizal fungi (AMF) are root fungal symbiont that improve management of abiotic stress such as phosphorus deficiency. PGPR involves roles like production of indole acetic acid (IAA), ammonia (NH3), hydrogen cyanide (HCN), catalase, etc. PGPR also improve nutrient uptake by altering the level of plant hormone that enhances root surface area by increasing its girth and shape, thereby helping in absorbing more nutrients. PGPR facilitate seed germination, seedling growth and crop yield. An array of microbes including Pseudomonas, Azospirillum, Azotobacter, Klebsiella, Enterobacter, Alcaligenes, Arthrobacter, Burkholderia, Bacillus, and Serratia enhance plant growth. Various Pseudomonas sp. have demonstrated significant increase in germination, seedling growth and yield in different agricultural crops, including wheat. Hence, developing a successful crop-specific PGPR formulation, the candidate should possess characteristics like high rhizosphere competence, extensive competitive saprophytic ability, growth enhancing ability, ease of mass production, broad-spectrum action, safety toward the environment and compatibility with other partnering organisms.

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The potential of digestate as a biofertilizer in eroded soils of Lithuania

Cited by 59 publications

References 21 publications

The Soil Organic Matter in Connection with Soil Properties and Soil Inputs

The Soil Organic Matter in Connection with Soil Properties and Soil Inputs

The effect of application of digestate and agro-food industry sludges on Dystric Cambisol porosity

Insight Into the Role of PGPR in Sustainable Agriculture and Environment

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