| dc.creator | Celis,J.E | |
| dc.creator | Sandoval,M.A | |
| dc.creator | Bello,N | |
| dc.date | 2011-01-01 | |
| dc.date.accessioned | 2019-04-25T12:39:43Z | |
| dc.date.available | 2019-04-25T12:39:43Z | |
| dc.identifier | https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0718-95162011000100005 | |
| dc.identifier.uri | http://revistaschilenas.uchile.cl/handle/2250/60940 | |
| dc.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. | |
| dc.format | text/html | |
| dc.language | en | |
| dc.publisher | Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo | |
| dc.relation | 10.4067/S0718-95162011000100005 | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.source | Journal of soil science and plant nutrition v.11 n.1 2011 | |
| dc.subject | Aquaculture | |
| dc.subject | decomposition of organic matter | |
| dc.subject | k-value | |
| dc.subject | biosolids | |
| dc.subject | soil remediation | |
| dc.subject | biological activity | |
| dc.title | NO-LINEAR RESPIRATION DYNAMICS IN A DEGRADED ALFISOL AMENDED WITH DIFFERENT DOSE OF SALMON SLUDGES | |
