- Title
- Modeling water flow and phosphorus sorption in a soil amended with sewage sludge and olive pomace as compost or biochar
- Creator
- Filipović, Vilim; Černe, Marko; Šimůnek, Jiří; Filipović, Lana; Romić, Marija; Ondrašek, Gabrijel; Bogunović, Igor; Mustać, Ivan; Krevh, Vedran; Ferenčević, Anja; Robinson, David; Palčić, Igor; Pasković, Igor; Goreta Ban, Smiljana; Užila, Zoran; Ban, Dean
- Date
- 2020
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/188849
- Identifier
- vital:17336
- Identifier
-
https://doi.org/10.3390/agronomy10081163
- Identifier
- ISSN:2073-4395
- Abstract
- Organic amendments are often reported to improve soil properties, promote plant growth, and improve crop yield. This study aimed to investigate the effects of the biochar and compost produced from sewage sludge and olive pomace on soil hydraulic properties, water flow, and P transport (i.e., sorption) using numerical modeling (HYDRUS-1D) applied to two soil types (Terra Rosa and Rendzina). Evaporation and leaching experiments on soil cores and repacked soil columns were performed to determine the soil water retention, hydraulic conductivity, P leaching potential, and P sorption capacity of these mixtures. In the majority of treatments, the soil water retention showed a small increase compared to the control soil. A reliable fit with the modified van Genuchten model was found, which was also confirmed by water flow modeling of leaching experiments (R2 0.99). The results showed a high P sorption in all the treatments (Kd 21.24 to 53.68 cm3 g−1), and a high model reliability when the inverse modeling procedure was used (R2 0.93–0.99). Overall, adding sewage sludge or olive pomace as compost or biochar improved the Terra Rosa and Rendzina water retention and did not increase the P mobility in these soils, proving to be a sustainable source of carbon and P-rich materials.
- Publisher
- MDPI
- Relation
- Agronomy (Basel) Vol. 10, no. 8 (2020), p. 1163
- Rights
- All metadata describing materials held in, or linked to, the repository is freely available under a CC0 licence
- Rights
- https://creativecommons.org/licenses/by/4.0/
- Rights
- © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license
- Rights
- Open Access
- Subject
- Charcoal; Composting; Composts; Cores; Crop yield; Electric properties; Evaporation; Fertilizers; Hydraulic measurements; Hydraulic properties; Hydraulics; Hydrogels; Hydrogeology; HYDRUS; Inverse estimation; Irrigation; Kinetics; Leaching; Moisture content; Numerical modeling; Phosphate; Phosphates; Phosphorus; Physical properties; Plant growth; Raw materials; Retention; Sewage sludge; Sludge; Soil amendment; Soil amendments; Soil columns; Soil improvement; Soil moisture; Soil properties; Soil treatment; Soil types; Soil water; Soils; Sorption; Water flow; Water treatment; 3002 Agriculture, land and farm management; 3004 Crop and pasture production
- Full Text
- Reviewed
- Funder
- This research was funded by the Croatian Science Foundation (HRZZ) Program for encouraging research and development activities in the field of climate change, and The Environmental Protection and Energy Efficiency Fund (contract No. PKP-2016-06-9041). David Robinson was supported by the Natural Environment Research Council award number NE/R016429/1 as part of the UK-SCaPE program delivering National Capability. The APC was covered by the Open Access Publication Fund, University of Zagreb Faculty of Agriculture.
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