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

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

Die Bodenkultur: Journal of Land Management, Food and Environment
Volume 70 (2019): Issue 1 (March 2019)
By: Amrei Voelkner,  Charlotte Diercks and  Rainer Horn  
Open Access
|Jun 2019

Figures & Tables

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

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.

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.

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
DOI: https://doi.org/10.2478/boku-2019-0004 | Journal eISSN: 2719-5430 | Journal ISSN: 0006-5471
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Language: English
Page range: 47 - 57
Submitted on: Oct 10, 2018
|
Accepted on: Feb 7, 2019
|
Published on: Jun 11, 2019
Published by: Universität für Bodenkultur Wien
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
Organic amendments,
microbial activity,
organic carbon,
basal respiration rate,
repellency index
Related subjects:
Life sciences,
Ecology,
Life sciences, other

© 2019 Amrei Voelkner, Charlotte Diercks, Rainer Horn, published by Universität für Bodenkultur Wien
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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