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• W1624705295 abstract "La presente investigacion se realizo con el proposito de evaluar el efecto de la incorporacion de un lodo de cerveceria, crudo y compostado, sobre algunos “indices de fertilidad biologica” en un suelo agricola de baja fertilidad (Typic Kandiustult). Para ello se realizo un experimento de incubacion en invernadero, durante 101 dias, con los siguientes tratamientos: a) suelo + lodo crudo, b) suelo + lodo compostado  y c) solo suelo (testigo). El lodo y el compost se incorporaron en dosis equivalente de 3,386 y 37,604 Mg.ha-1 respectivamente, para aportar una cantidad equivalente de N disponible de 100 kg.ha-1. El efecto de los tratamientos se midio a traves de evolucion de CO2  y actividades de las enzimas deshidrogenasa, ureasa y fosfatasa acida. Los resultados obtenidos indicaron que el lodo compostado produce disminucion de las actividades de la deshidrogenasa y ureasa, mientras que el lodo crudo causo una reduccion de las actividades de la ureasa y de la fosfatasa acida. Se presume que la presencia de metales pesados y sales en estos materiales pueda ser la causa de este efecto. Palabras Claves: Lodo de cerveceria, ultisol, evolucion de CO2, deshidrogenasa, ureasa, fosfatasa acida. Abstract This research has been aimed to evaluate the effects of the in-corporation of brewery sludge (raw and composted) on some indexes of biological fertility, in an agricultural soil of low fertility (Typic Kandiustult). An incubation experiment was carried out in a greenhouse, for 101 days, with the following treatments: a) soil + crude sludge, b) soil + compost sludge and c) only soil (control). Sludge and compost were incorporated in equivalent dose to 3,386 y 37,604 Mg.ha-1, respectively, to give an equivalent quantity of 100 kg.ha-1 of available N. CO2 evolution, and activities of dehydrogenase, urease and acid phosphatase enzymes were determined. Composted and raw sludge incorporation increased CO2 evolution. However, com-posted sludge reduced dehydrogenase and urease activities, while crude sludge reduced urease and acid phosphatase activities. The presence of heavy metals and salts in these materials is likely to be the cause of this effect. Keys Words: Brewery sludge, ultisol, CO2  evolution, dehydrogenase, urease, acid phosphatase" @default.
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• W1624705295 date "2011-11-09" @default.
• W1624705295 modified "2023-09-28" @default.
• W1624705295 title "EFECTO DE UN RESIDUO INDUSTRIAL, CRUDO Y COMPOSTADO, SOBRE LAS PROPIEDADES BIOLÓGICAS DE UN SUELO" @default.
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