Effects of municipal solid waste compost and sewage sludge on chemical and spectroscopic properties of humic acids from a sandy Haplic Podzol and a clay loam Calcic Vertisol in Portugal

Biochar application is now considered to be one of the most promising agricultural practices to mitigate climate change. However, to fully assess the benefits of biochar, we still need to better understand its effects on soil properties, and particularly on native soil organic matter (SOM) dynamics.In this work, we investigated soil respiration and changes in SOM pools (mineral-free, intra-aggregate, and mineral-associated SOM) as affected by the application of 20 t / ha per year of biochar alone or combined with mineral fertilizer, municipal solid waste compost, or sewage sludge. The experiment was run for 7 years in a semiarid agricultural soil. We found that biochar had no effect on soil respiration with respect to mineral fertilization and no amendment (control), and tended to decrease CO2 emissions from soils amended with municipal solid waste compost and sewage sludge. Biochar accumulated mainly in the mineral-free SOM fraction and its addition, especially in combination with municipal solid waste compost, promoted the amount of SOM occluded with aggregates and associated to mineral surfaces.Acknowledgments: to the Spanish MICINN (MINECO, AEI, FEDER, EU) for supporting the research project AGL2016-75762-R.

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Effects of municipal solid waste compost and sewage sludge on mineralization of soil organic matter

Soil Biology and Biochemistry ◽

10.1016/j.soilbio.2006.12.014 ◽

2007 ◽

Vol 39 (6) ◽

pp. 1375-1382 ◽

Cited By ~ 58

Author(s):

Filipe Pedra ◽

Alfredo Polo ◽

Alexandra Ribeiro ◽

Herminia Domingues

Keyword(s):

Organic Matter ◽

Soil Organic Matter ◽

Sewage Sludge ◽

Municipal Solid Waste ◽

Solid Waste ◽

Municipal Solid Waste Compost

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Risk of municipal solid waste compost and sewage sludge use on photosynthetic performance in common crop (Triticum durum)

Acta Physiologiae Plantarum ◽

10.1007/s11738-011-0898-2 ◽

2011 ◽

Vol 34 (3) ◽

pp. 1017-1026 ◽

Cited By ~ 9

Author(s):

Abdelbasset Lakhdar ◽

Tarek Slatni ◽

Maria Adelaide Iannelli ◽

Ahmed Debez ◽

Fabrizio Pietrini ◽

...

Keyword(s):

Sewage Sludge ◽

Municipal Solid Waste ◽

Solid Waste ◽

Triticum Durum ◽

Photosynthetic Performance ◽

Municipal Solid Waste Compost

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Improvement of Soil Quality Parameters by Municipal Solid Waste Compost Application in Clay-Loam Soil

Turkish Journal of Agriculture - Food Science and Technology ◽

10.24925/turjaf.v8i3.603-609.3062 ◽

2020 ◽

Vol 8 (3) ◽

pp. 603

Author(s):

Orhan Yüksel ◽

Yasemin Kavdır

Keyword(s):

Hydraulic Conductivity ◽

Municipal Solid Waste ◽

Solid Waste ◽

Bulk Density ◽

Soil Samples ◽

Experimental Plant ◽

Clay Loam ◽

Undisturbed Soil ◽

Municipal Solid Waste Compost ◽

Experimental Plots

Organic matter (OM) content of the soils should be improved for sustainable productions. Municipal solid waste compost (MSWC) is an organic material used in several countries to improve soil OM contents. This study was conducted to determine potential use of MSWC as soil amendment. Field experiments were conducted for two years with single MSWC treatments. Experiments were conducted on 18 plots in randomized complete blocks design with 3 replications. Six different MSWC doses (0, 40, 80, 120, 160 and 200 t ha-1) were applied to experimental plots. Compost doses were calculated in dry weight basis, applied to 21 m2 plots and sunflower was sown as the experimental plant of the study. Following the sunflower harvest, disturbed and undisturbed soil samples were taken from the experimental plots and soil samples were subjected to various analyses. Applied MSWC doses significantly increased soil OM contents, electrical conductivity (EC) and cation exchange capacity (CEC), aggregate stability (AS) and saturated hydraulic conductivity (Ksat) and reduced soil bulk density (BD). Effects of MSWC on soil pH were not found to be significant. Effects of MSWC treatments were more remarkable with increasing doses. MSWC treatments increased soil OM contents about 3 folds and increased CEC by about 25%. MSWC treatments significantly increased salt contents of the soils. Such increases were found to be significant at 1% level in the first year and 5% level in the second year. Increasing OM contents also increase soil aggregation, thus reduced bulk density and increased hydraulic conductivity. Correlation analysis revealed significant correlations between OM and AS. Present findings revealed that MSWC positively influenced physical and chemical characteristics of clay-loam soils of arid and arid climates, but salt contents should carefully be monitored in repetitive uses.

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