NO-LINEAR RESPIRATION DYNAMICS IN A DEGRADED ALFISOL AMENDED WITH DIFFERENT DOSE OF SALMON SLUDGES

No research has been conducted regarding respiration model parameters as a consequence of the application of salmon sludge on degraded Alfisols. In order to investigate kinetic parameters representing the decomposition of salmon sludge by means of respiration rates, sediment samples from a land-farm...

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Autores principales:	Celis,J.E, Sandoval,M.A, Bello,N
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2011
Materias:	Aquaculture decomposition of organic matter k-value biosolids soil remediation biological activity
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162011000100005
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spelling	oai:scielo:S0718-951620110001000052011-03-25NO-LINEAR RESPIRATION DYNAMICS IN A DEGRADED ALFISOL AMENDED WITH DIFFERENT DOSE OF SALMON SLUDGESCelis,J.ESandoval,M.ABello,N Aquaculture decomposition of organic matter k-value biosolids soil remediation biological activity No research has been conducted regarding respiration model parameters as a consequence of the application of salmon sludge on degraded Alfisols. In order to investigate kinetic parameters representing the decomposition of salmon sludge by means of respiration rates, sediment samples from a land-farmed pisciculture and a lake-salmon facility were applied to a degraded Alfisol at the Biobio region (Chile). Soil microbiological activity was evaluated on a 60-days laboratory incubation experiment under different salmon sludge addition dose: T1 25 t ha-1; T2: 50 t ha-1; T3: 75 t ha-1; T4: 100 t ha-1; T5: 150 t ha-1. A non-amended soil served as control. C0(2)-C production was determined in samples under closed incubation. A two-component first-order regression model was applied to C0(2)-C curves to obtain kinetic parameter values of C mineralization. The analysis confirmed that microorganisms increased their respiratory activity with time and increased sludge concentration (p ≤ 0.05). A higher microbial activity was noted when soil was amended with land-farmed sludge at 100 and 150 t ha-1, particularly after 30 days of incubation. The model showed that microorganisms needed more time to decompose labile C compounds in the salmon sludge when dose increased above 100 t ha-1. After 60 days of incubation, land-farmed sludge amended at 25 t ha-1 accumulated 44% of C0(2)-C from a labile C source and 56% from a mineralized C pool, whereas at 150 t ha-1 showed a 76% of a labile C and 24% mineralized C.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.11 n.1 20112011-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162011000100005en10.4067/S0718-95162011000100005
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Aquaculture decomposition of organic matter k-value biosolids soil remediation biological activity
spellingShingle	Aquaculture decomposition of organic matter k-value biosolids soil remediation biological activity Celis,J.E Sandoval,M.A Bello,N NO-LINEAR RESPIRATION DYNAMICS IN A DEGRADED ALFISOL AMENDED WITH DIFFERENT DOSE OF SALMON SLUDGES
description	No research has been conducted regarding respiration model parameters as a consequence of the application of salmon sludge on degraded Alfisols. In order to investigate kinetic parameters representing the decomposition of salmon sludge by means of respiration rates, sediment samples from a land-farmed pisciculture and a lake-salmon facility were applied to a degraded Alfisol at the Biobio region (Chile). Soil microbiological activity was evaluated on a 60-days laboratory incubation experiment under different salmon sludge addition dose: T1 25 t ha-1; T2: 50 t ha-1; T3: 75 t ha-1; T4: 100 t ha-1; T5: 150 t ha-1. A non-amended soil served as control. C0(2)-C production was determined in samples under closed incubation. A two-component first-order regression model was applied to C0(2)-C curves to obtain kinetic parameter values of C mineralization. The analysis confirmed that microorganisms increased their respiratory activity with time and increased sludge concentration (p ≤ 0.05). A higher microbial activity was noted when soil was amended with land-farmed sludge at 100 and 150 t ha-1, particularly after 30 days of incubation. The model showed that microorganisms needed more time to decompose labile C compounds in the salmon sludge when dose increased above 100 t ha-1. After 60 days of incubation, land-farmed sludge amended at 25 t ha-1 accumulated 44% of C0(2)-C from a labile C source and 56% from a mineralized C pool, whereas at 150 t ha-1 showed a 76% of a labile C and 24% mineralized C.
author	Celis,J.E Sandoval,M.A Bello,N
author_facet	Celis,J.E Sandoval,M.A Bello,N
author_sort	Celis,J.E
title	NO-LINEAR RESPIRATION DYNAMICS IN A DEGRADED ALFISOL AMENDED WITH DIFFERENT DOSE OF SALMON SLUDGES
title_short	NO-LINEAR RESPIRATION DYNAMICS IN A DEGRADED ALFISOL AMENDED WITH DIFFERENT DOSE OF SALMON SLUDGES
title_full	NO-LINEAR RESPIRATION DYNAMICS IN A DEGRADED ALFISOL AMENDED WITH DIFFERENT DOSE OF SALMON SLUDGES
title_fullStr	NO-LINEAR RESPIRATION DYNAMICS IN A DEGRADED ALFISOL AMENDED WITH DIFFERENT DOSE OF SALMON SLUDGES
title_full_unstemmed	NO-LINEAR RESPIRATION DYNAMICS IN A DEGRADED ALFISOL AMENDED WITH DIFFERENT DOSE OF SALMON SLUDGES
title_sort	no-linear respiration dynamics in a degraded alfisol amended with different dose of salmon sludges
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162011000100005
work_keys_str_mv	AT celisje nolinearrespirationdynamicsinadegradedalfisolamendedwithdifferentdoseofsalmonsludges AT sandovalma nolinearrespirationdynamicsinadegradedalfisolamendedwithdifferentdoseofsalmonsludges AT bellon nolinearrespirationdynamicsinadegradedalfisolamendedwithdifferentdoseofsalmonsludges
_version_	1714206417881137152

NO-LINEAR RESPIRATION DYNAMICS IN A DEGRADED ALFISOL AMENDED WITH DIFFERENT DOSE OF SALMON SLUDGES

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