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Potential Use of a poultry manure digestate as a Biofertiliser: evaluation of soil properties and Lactuca sativa growth

Anaerobic digestion is a process that is widely used for the treatment of organic wastes. The digestate can be used as a soil amendment or crop fertiliser. The aims of our work were to evaluate 1) the physicochemical composition and pathogen content in a digestate from poultry manure, according to...

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Autores principales: Mortola, Natalia Andrea, Romaniuk, Romina Ingrid, Cosentino, Vanina Rosa Noemi, Carfagno, Patricia, Rizzo, Pedro Federico, Bres, Patricia Alina, Riera, Nicolas, Roba, Marcos Andrés, Butti, Mariano, Sainz, Daiana Soledad, Brutti, Lucrecia Noemi, Eiza, Maximiliano Joaquin
Formato: info:ar-repo/semantics/artículo
Lenguaje:Inglés
Publicado: 2019
Materias:
Anaerobic Treatment
Crop Yield
Organic Wastes
Soil Amendments
Lettuces
Tratamiento Anaeróbico
Rendimiento de Cultivos
Desechos Orgánicos
Enmiendas del Suelo
Lechugas
Lactuca sativa
Organic Ferlitiser
Soil Chemical Properties
Soil Microbiological Properties
Fertilizante Orgánico
Propiedades Químicas del Suelo
Propiedades Microbiológicas del Suelo
Acceso en línea:http://hdl.handle.net/20.500.12123/4701
https://www.sciencedirect.com/science/article/pii/S1002016018600578
https://doi.org/10.1016/S1002-0160(18)60057-8
Sumario:Anaerobic digestion is a process that is widely used for the treatment of organic wastes. The digestate can be used as a soil amendment or crop fertiliser. The aims of our work were to evaluate 1) the physicochemical composition and pathogen content in a digestate from poultry manure, according to international regulations, and 2) the effect of its soil application on the major chemical and biological soil properties and on the growth of Lactuca sativa. The experiment consisted of two groups of pots (with and without crop). Treatments applied to each group were as follows: low and high doses of digestate and inorganic fertiliser, and no application (control) (low dose: 70 kg nitrogen (N) ha􀀀1 and 21 kg phosphorus (P) ha􀀀1; high dose: 210 kg N ha􀀀1 and 63 kg P ha􀀀1). Soil samples were taken 7 and 34 d (harvest) after treatment applications. Heavy metal and pathogen contents in the digestate were below the upper limit values. Despite the high pH and electrical conductivity values of the digestate, both soil parameters presented acceptable values for crop growth. Although there were no initial increases in total inorganic N and available P in soil with digestate application, an increase in the fresh weight of crop was observed with the high dose application. This is probably associated with the slow nutrient release from the digestate during the development of the crop. Changes in the microbial community were temporary and occurred at the initial sampling stage of the experiment.

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