Mitigation of phytotoxic effect of compost by application of optimized aqueous extraction protocols
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URI: http://hdl.handle.net/10835/14974
ISSN: 0048-9697
DOI: https://doi.org/10.1016/j.scitotenv.2023.162288
ISSN: 0048-9697
DOI: https://doi.org/10.1016/j.scitotenv.2023.162288
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Lerma-Moliz, R.; López González, Juan Antonio; Suárez-Estrella, F.; Martínez-Gallardo, M.R.; Jurado, M.M.; [et al.]Date
2023-02-16Abstract
The abuse of chemical fertilizers in recent decades has led the promotion of less harmful alternatives, such as compost
or aqueous extracts obtained from it. Therefore, it is essential to develop liquid biofertilizers, which in addition of
being stable and useful for fertigation and foliar application in intensive agriculture had a remarkable phytostimulant
extracts. For this purpose, a collection of aqueous extracts was obtained by applying four different Compost Extraction
Protocols (CEP1, CEP2, CEP3, CEP4) in terms of incubation time, temperature and agitation of compost samples from
agri-food waste, olive mill waste, sewage sludge and vegetable waste. Subsequently, a physicochemical characterization
of the obtained set was performed in which pH, electrical conductivity and Total Organic Carbon (TOC) were measured.
In addition, a biological characterization was also carried out by calculating the Germination Index (GI) and
determining the Biological Oxygen Demand (BOD5). Fur...