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Compared impact of compost and digestate on priming effect and hydrophobicity of soils depending on textural composition

Amrei Voelkner

Amrei Voelkner

Institute of Plant Nutrition and Soil Science, Christian-Albrechts-Universität of KielKiel, Germany
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Voelkner, Amrei
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Charlotte Diercks

Charlotte Diercks

Institute of Plant Nutrition and Soil Science, Christian-Albrechts-Universität of KielKiel, Germany
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Diercks, Charlotte
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Rainer Horn

Rainer Horn

Institute of Plant Nutrition and Soil Science, Christian-Albrechts-Universität of KielKiel, Germany
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Horn, Rainer
  
11 giu 2019
Compared impact of compost and digestate on priming effect and hydrophobicity of soils depending on textural composition's Cover Image
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Categoria dell'articolo: Research Article
Pubblicato online: 11 giu 2019
Pagine: 47 - 57
Ricevuto: 10 ott 2018
Accettato: 07 feb 2019
DOI: https://doi.org/10.2478/boku-2019-0004
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© 2019 Amrei Voelkner, Charlotte Diercks, Rainer Horn, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Figure 1

Schematic experimental design of the basal respiration by titration after pre-drying at –60 hPa.Abbildung 1. Schematische Darstellung des Versuchsaufbaus zur Messung der basalen Respiration durch Titration anhand der auf -60 hPa vorentwässerten Proben
Schematic experimental design of the basal respiration by titration after pre-drying at –60 hPa.Abbildung 1. Schematische Darstellung des Versuchsaufbaus zur Messung der basalen Respiration durch Titration anhand der auf -60 hPa vorentwässerten Proben

Figure 2

Organic carbon (Corg) content (n=4) of the Ss and the Ut3 after application of 10/30 t DS 1500 m–3 of compost (SCA = soil compost amendment; C10, C30) and 40/120 m3 OS 1500 m–3 of digestate (SDA = soil digestate amendment; D40, D120). Different letters (a, b) indicate statistically significant differences (p<0.05) of the SCM and SDM in comparison to the reference (R). Boxes represent values within the 25th and 75th percentile; the whiskers indicate the range, and horizontal bars inside the boxes represent the median values.Abbildung 2. Gehalt an organischem Kohlenstoff (Corg ) (n=4) des Ss und des Ut3 nach Beimischung von 10/30 t DS 1500 m-3 an Kompost (C10, C30) und 40/120 m3OS 1500 m-3 an Gärresten (D40, D120). Unterschiedliche Buchstaben (ab) zeigen statistisch signifikante Unterschiede (p <0,05) von SCM und SDM im Vergleich zur Referenz (R). Die Boxen zeigen den Median und die 25/75%-Perzentile, die Whisker die Ober- und Untergrenze der Messwerte. Die horizontalen Balken in den Boxen kennzeichnen die Mittelwerte.
Organic carbon (Corg) content (n=4) of the Ss and the Ut3 after application of 10/30 t DS 1500 m–3 of compost (SCA = soil compost amendment; C10, C30) and 40/120 m3 OS 1500 m–3 of digestate (SDA = soil digestate amendment; D40, D120). Different letters (a, b) indicate statistically significant differences (p<0.05) of the SCM and SDM in comparison to the reference (R). Boxes represent values within the 25th and 75th percentile; the whiskers indicate the range, and horizontal bars inside the boxes represent the median values.Abbildung 2. Gehalt an organischem Kohlenstoff (Corg ) (n=4) des Ss und des Ut3 nach Beimischung von 10/30 t DS 1500 m-3 an Kompost (C10, C30) und 40/120 m3OS 1500 m-3 an Gärresten (D40, D120). Unterschiedliche Buchstaben (ab) zeigen statistisch signifikante Unterschiede (p <0,05) von SCM und SDM im Vergleich zur Referenz (R). Die Boxen zeigen den Median und die 25/75%-Perzentile, die Whisker die Ober- und Untergrenze der Messwerte. Die horizontalen Balken in den Boxen kennzeichnen die Mittelwerte.

Figure 3

Basal respiration rate (BAS; n=3) of the Ss and the Ut3 after application of 10/30 t DS 1500 m–3 of compost (SCA = soil compost amendment; C10, C30) and 40/120 m3 OS 1500 m–3 of digestate (SDA = soil digestate amendment; D40, D120). Different letters (a, b) indicate statistically significant differences (p<0.05) of the SCM and SDM in comparison to the reference (R). Boxes represent values within the 25th and 75th percentile; the whiskers indicate the range, and horizontal bars inside the boxes represent the median values.Abbildung 3. Basale Respirationsrate (BAS; n=3) des Ss und des Ut3 nach Beimischung von 10/30 t DS 1500 m-3 an Kompost (C10, C30) und 40/120 m3OS 1500 m-3 an Gärresten (D40, D120). Unterschiedliche Buchstaben (ab) zeigen statistisch signifikante Unterschiede (p <0,05) von SCM und SDM im Vergleich zur Referenz (R). Die Boxen zeigen den Median und die 25/75%-Perzentile, die Whisker die Ober- und Untergrenze der Messwerte. Die horizontalen Balken in den Boxen kennzeichnen die Mittelwerte.
Basal respiration rate (BAS; n=3) of the Ss and the Ut3 after application of 10/30 t DS 1500 m–3 of compost (SCA = soil compost amendment; C10, C30) and 40/120 m3 OS 1500 m–3 of digestate (SDA = soil digestate amendment; D40, D120). Different letters (a, b) indicate statistically significant differences (p<0.05) of the SCM and SDM in comparison to the reference (R). Boxes represent values within the 25th and 75th percentile; the whiskers indicate the range, and horizontal bars inside the boxes represent the median values.Abbildung 3. Basale Respirationsrate (BAS; n=3) des Ss und des Ut3 nach Beimischung von 10/30 t DS 1500 m-3 an Kompost (C10, C30) und 40/120 m3OS 1500 m-3 an Gärresten (D40, D120). Unterschiedliche Buchstaben (ab) zeigen statistisch signifikante Unterschiede (p <0,05) von SCM und SDM im Vergleich zur Referenz (R). Die Boxen zeigen den Median und die 25/75%-Perzentile, die Whisker die Ober- und Untergrenze der Messwerte. Die horizontalen Balken in den Boxen kennzeichnen die Mittelwerte.

Soil Characteristics of the Investigated Arable Sites [Karkendamm (Ss) and Dikopshof (Ut3)]Tabelle 1_ Bodeneigenschaften der untersuchten Böden Ss (Karkendamm) und Ut3 (Dikopshof)

Soil Textures
SsUt3
pH (0.02 m CaCl2) (–)5.37.1
Electrical conductivity (μS cm–1)86182
Organic carbon (Corg ) (%)2.80.3
Texture
Clay (%)2.614.9
Silt (%)5.877.9
Sand (%)91.57.2

Properties of Compost and DigestateTabelle 2_ Eigenschaften des Komposts und des Gärrests_ OS = Originalsubstanz, DS = Trockensubstanz

pHDSS-valueNtNH4-NPKMgCa
% OScmol c kg–1% DS
Compost8.25622.11.3N.A.0.20.70.22.4
Digestate7.72.794.76.75.2111.61.48.5

Description and Declaration of the Amendments regarding the Topsoil of 15 cm DepthTabelle 3_ Beschreibung und Bezeichnung der Varianten bezogen auf eine Bodentiefe von 15 cm_ DS = Trockensubstanz, OS = Originalsubstanz

AmendmentDeclaration
Reference (demineralized water)R
10 t DS compost + 1500 m–3 soilC10
30 t DS compost + 1500 m–3 soilC30
40 m3 OS digestate + 1500 m–3 soilD40
120 m3 OS digestate + 1500 m–3 soilD120

Repellency index (RI) (n=6) of the Ss and the Ut3 after application of 10/40 t DS 1500 m–3 of compost (C10, C30) and 40/120 m3 OS 1500 m–3 of digestate (D40, D120)_Tabelle 4_ Repellency Index (RI) (n=6) des Ss und Ut3 nach Beimengung des Kompost in einer Menge von 10/40 t DS 1500 m-3 (C10, C30) bzw_ 40/120 m3OS 1500 m-3 an Gärrest (D40, D120)_

RC10C30D40D120
Ss0.9±0.21.2±0.31.5±0.41.2±0.41.0±0.2
Ut31.0±0.21.3±0.11.2±0.21.4±0.11.3±0.1
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