Humus samples as an indicator of long-term anthropogenic input – A case study from southern Finland

Minolfi, Giulia; Jarva, Jaana; Tarvainen, Timo

doi:10.1016/j.gexplo.2017.06.024

Cited by 8 publications

(4 citation statements)

References 20 publications

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“…After plowing with the turnover of the formation and harrowing, the SRR decreases due to the increase in the humidity of the surface of the freshly plowed soil. The determined spectral reflective properties of the dried soil surface are the closest to those measured in laboratory conditions [11,12].…”

Section: Resultsmentioning

confidence: 54%

Features of Remote Determination of Humus Content in Arable Soils

Gurov¹,

Shirokova²,

Khutorova³

et al. 2019

Proceedings of the VIII Science and Technology Conference “Contemporary Issues of Geology, Geophysics and Geo-Ecology of the No

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The paper considers the influence of different covers, such as crop residues, soil crust, etc. on the remote determination of humus content in soils of agricultural land. It is shown that in laboratory conditions with dry soil there is a close relationship between the humus content and spectral reflective properties. When soil is moistened, the spectral brightness coefficient decreases, which gives a false idea of a higher humus content. The presence of naturally occurring crop residues in the form of straw, on the contrary, gives an idea of a lower content. The formation of seasonal thin soil crusts on the surface of arable soils with different humus content is even more difficult for remote determination of humus. In order to identify the impact of different covers on remote definition of humus, the complex of laboratory and field observations which showed that in vivo continuously there are processes as a result of which the same soil on the spectral reflective properties can be carried on the maintenance of a humus to various taxonomical groups was carried out.

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Section: Resultsmentioning

confidence: 54%

Features of Remote Determination of Humus Content in Arable Soils

Gurov¹,

Shirokova²,

Khutorova³

et al. 2019

Proceedings of the VIII Science and Technology Conference “Contemporary Issues of Geology, Geophysics and Geo-Ecology of the No

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show abstract

“…The elevated total concentrations of macronutrients (Ca, Mg, K, P and Mn) in Table 3 as well as the Tot-N concentrations (see Table 2), all of which are essential for plants, also support the utilisation of these residues as a fertiliser. The elevated total Na concentrations (1,850 -2,710 mg/kg) were significantly higher than those in Finnish humus [Minolfi et a., 2017], so these residues would provide additional benefits for soils if they were used as a fertiliser product and a soil conditioning agent. Although Na is not considered an essential nutrient for plants its concentration effects soil structure [Nafees et al, 2018].…”

Section: Total Element Concentrations In the Sludgementioning

confidence: 95%

“…The bioavailability of elements for biota is connected to their solubility and decreases in the Table 3. Total element concentrations in the sludges and in humus from southern Finland (Minolfi et al, 2017), as well as Finnish limit values for maximum concentrations of elements in fertilizer products (Collivignarelli et al, 2019). All concentration expressed as mg/kg (d.w.).…”

Section: The Chemical Fractionation Of Elements In the Sludgesmentioning

confidence: 99%

Comparison of Untreated, Lime-Stabilized and Composted Wastewater Sludges from a Pulp, Board and Paper Mill Integrate as a Fertilizer Product

Oksanen¹,

Pöykiö²,

Dahl³

2021

J. Ecol. Eng.

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In this study, the physical and chemical properties of untreated, lime-stabilised and composted wastewater sludges from a Finnish pulp, board and paper mill integrate were compared in order to assess their fertiliser properties based on the requirement of the Finnish Fertilizer Product Decree. Furthermore, the extraction properties of heavy metals in the sludges were assessed by the three-stage sequential extraction procedure of the Community Bureau of Reference (BCR) and the solubility indices for heavy metals were calculated in order to evaluate the release potential of elements from the sample (sludge) matrix. The results of this study indicated that the total heavy metal (As, Cd, Cr, Cu, Hg, Ni, Pb and Zn) concentrations in all sludges were lower than the statutory Finnish limit values for fertiliser products. However, the untreated sludge required either lime-stabilisation or composting in order to fulfil the Finnish maximum concentrations of pathogens (coliforms and Escherichia coli) for fertiliser products.

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“…An urgent task is the development of biotechnological methods for producing organic preparations based on humic compounds with a wide range of biological effects, which will contribute to increasing crop yields and ensuring biological protection of the soil [14][15][16].…”

Section: Donagromentioning

confidence: 99%

The Technology of Producing Biohumus and the Study of its Qualitative Indicators

Гнеуш

Zholobova

Petenko

et al. 2021

KLS

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This article presents the results from the development of a technology for producing biohumus from the feces of cattle and winter wheat straw in a biodynamic fermenter. Nitrifying agents are important for soil fertility, which is dependent on the intensity of the nitrification process. This group includes aerobic cellulose-destroying microorganisms, denitrifiers and sulfate-reducing bacteria. The ratio of these groups and their composition are changing. Therefore, the study of the quantitative ratio of microbial communities involved in the formation of biohumus was of considerable scientific interest. During the microbiological analyses, a large number of microorganisms were found to be involved in the decomposition of the organic compounds. Aminoautotrophic microorganisms represented the largest physiological group of microorganisms in the biohumus. The chemical composition of the biohumus was determined during the study and a sanitary microbiological analysis was performed. The content of gross forms of elements in the humic extract was also examined. The humic extract from the biohumus was a brown liquid with 15 g / l of humic acids, 5.0 g / l of fulvic acids, and gross forms of elements (potassium, phosphorus, nitrogen). The dry matter in the biohumus was 1.0% of the total composition and contained 0.1% nitrogen, 0.03% phosphorus P2O5 and 0.01% potassium K2O. It was found that high-quality organic fertilizer can be obtained using this technology. Keywords: biohumus, humic extract, chemical composition, sanitary-microbiological analysis, organic fertilizer

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Humus samples as an indicator of long-term anthropogenic input – A case study from southern Finland

Cited by 8 publications

References 20 publications

Features of Remote Determination of Humus Content in Arable Soils

Features of Remote Determination of Humus Content in Arable Soils

Comparison of Untreated, Lime-Stabilized and Composted Wastewater Sludges from a Pulp, Board and Paper Mill Integrate as a Fertilizer Product

The Technology of Producing Biohumus and the Study of its Qualitative Indicators

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