Abstract
This work aims to justify of the use of urban sludges, mixed with either fertilized or unfertilized peat, through the study of their effects on the germination and growth of a Pelargonium hybrid as well as effects on substrata and plant pollution (pathogens). Several treatments of urban sludges mixed in varying proportions with fertilized or unfertilized peat were used. Germination rate in all instances was above 70% and reached 100% for 3 treatments. Plant growth (height) and leaf production were generally better when fertilised peat was used in mixtures but plant height also equalled the maximum when grown in pure urban sludge. Chemical and microbiological analysis of the different treatments showed that there was not any potential pollution hazard for the use of this urban sludge as a substrate.
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© 1999 Kluwer Academic Publishers
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Brito, J.M.C., Lopes, R., Machado, A.M.V., Guerrero, C., Faleiro, L., Beltrão, J. (1999). Sewage sludge as a horticultural substrate. In: Anac, D., Martin-PrÉvel, P. (eds) Improved Crop Quality by Nutrient Management. Developments in Plant and Soil Sciences, vol 86. Springer, Dordrecht. https://doi.org/10.1007/978-0-585-37449-9_47
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DOI: https://doi.org/10.1007/978-0-585-37449-9_47
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