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Article

Utilization of Inorganic Nanoparticles and Biochar as Additives of Agricultural Waste Composting: Effects of End-Products on Plant Growth, C and Nutrient Stock in Soils from a Mediterranean Region

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Laboratory of Soil Microbial Ecology and Biogeochemistry, Institute of Agri-Food, Animal and Environmental Sciences (ICA3), Universidad de O’Higgins, San Fernando 3070000, Chile
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Nanobiotechnology Laboratory, Center of Plant, Soil Interaction and Natural Resources Biotechnology, Scientific and Biotechnological Bioresource Nucleus, BIOREN UFRO, Universidad de La Frontera, Temuco 4811230, Chile
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Centro de Investigación en Micorrizas y Sustentabilidad Agroambiental (CIMYSA), Scientific and Technological Bioresources Nucleus-BIOREN, Universidad de La Frontera, Temuco 4811230, Chile
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Department of Medical Biochemestry and Biophysics, Kemihuset (K), Campus, Umeå Umeå Universitet, 901 87 Umeå, Sweden
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Instituto de Investigaciones Agropecuarias (INIA), CRI Carillanca P.O. Box 58-D, Temuco 8320000, Chile
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Instituto de Ciencias Agrarias (ICA-CSIC), c/Serrano 115-B, 28006 Madrid, Spain
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Facultad de Recursos Naturales, Universidad Católica de Temuco, Temuco 4780000, Chile
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Instituto de Recursos Naturales y Agrobiología de Sevilla, (IRNAS-CSIC), 41012 Seville, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Francesco Montemurro
Agronomy 2021, 11(4), 767; https://doi.org/10.3390/agronomy11040767
Received: 14 March 2021 / Revised: 26 March 2021 / Accepted: 26 March 2021 / Published: 14 April 2021
This study was conducted to evaluate the effect of compost produced with agricultural residues and oat-based biochar, iron oxide and halloysite nanoparticles as additives of the process of composting on soil chemical properties, nutrient status and growth of ryegrass Lolium perenne L. For this, a 90-day mesocosm experiment was carried out under greenhouse conditions. Bare soil and a basal fertilization treatment were compared to soils amended with nonadditive compost (NA compost), compost supplied with oat-based biochar (Bioch compost), iron oxide nanoparticles (Fe compost), and halloysite nanoparticles (Ha compost). Compost supplied with nanoparticles and biochar combined were also considered. The incorporation of compost with or without additives increased the content of total C and N in soil, with N diminishing (total and mineral forms) and C/N modifications after 90 days. The addition of compost and co-composted treatments also increased the total contents of main nutrients such as Ca, K, P and S. Furthermore, the supply of additives into composting did not increase the concentration of trace toxic elements. At the end of the experiment, plant biomass increased by the addition of the different organic amendments, with the highest shoot biomass in soils amended with compost supplied with nanoparticles. These results suggest that the addition of compost based on agricultural residues with additives such as halloysite or biochar improves chemical properties and nutritional status of soil that favor and increase plant growth of Lollium perenne stablished in soils from the Mediterranean Region. View Full-Text
Keywords: compost; iron oxide; amendments; pyrogenic carbon; grassland soil compost; iron oxide; amendments; pyrogenic carbon; grassland soil
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MDPI and ACS Style

Medina, J.; Calabi-Floody, M.; Aponte, H.; Santander, C.; Paneque, M.; Meier, S.; Panettieri, M.; Cornejo, P.; Borie, F.; Knicker, H. Utilization of Inorganic Nanoparticles and Biochar as Additives of Agricultural Waste Composting: Effects of End-Products on Plant Growth, C and Nutrient Stock in Soils from a Mediterranean Region. Agronomy 2021, 11, 767. https://doi.org/10.3390/agronomy11040767

AMA Style

Medina J, Calabi-Floody M, Aponte H, Santander C, Paneque M, Meier S, Panettieri M, Cornejo P, Borie F, Knicker H. Utilization of Inorganic Nanoparticles and Biochar as Additives of Agricultural Waste Composting: Effects of End-Products on Plant Growth, C and Nutrient Stock in Soils from a Mediterranean Region. Agronomy. 2021; 11(4):767. https://doi.org/10.3390/agronomy11040767

Chicago/Turabian Style

Medina, Jorge, Marcela Calabi-Floody, Humberto Aponte, Christian Santander, Marina Paneque, Sebastian Meier, Marco Panettieri, Pablo Cornejo, Fernando Borie, and Heike Knicker. 2021. "Utilization of Inorganic Nanoparticles and Biochar as Additives of Agricultural Waste Composting: Effects of End-Products on Plant Growth, C and Nutrient Stock in Soils from a Mediterranean Region" Agronomy 11, no. 4: 767. https://doi.org/10.3390/agronomy11040767

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