Consulta: creatorFacets:"Celis H,José"
Registros recuperados: 2
Data/hora: 08/06/2024 16:44:15

Effect of sewage sludge and sawdust in association with hybrid ryegrass (Lolium x hybrydum Hausskin.) on soil macroaggregates and water content
Provedor de dados: 117
Autores: Sandoval E,Marco; Celis H,José; Bahamondes P,Carlos.
Chilean soils degradation is a serious problem affecting directly the productivity of most of the crops. Some evidence indicates sewage sludge can improve soil physical properties, especially when combined with sawdust. The objective of this work was to evaluate the effect of different mixtures of sewage sludge (LU) and sawdust (RA) on water-stable aggregates and available water content of a degraded Alfisol cropped with hybrid ryegrass (Lolium x hybridum Hausskn.), under greenhouse conditions. The experimental design was a completely randomized with a factorial arrangement of 2 x 9 (ryegrass x rates of sludge and sawdust). Treatments were 25 and 50 Mg LU ha-1 mixed with 10, 25, and 50 Mg RA ha-1. Ratio mixtures of LU/RA were set in pots with hybrid...
Tipo: Journal article
Palavras-chave: Soil aggregation; Biosolids; Remediation; Organic wastes; Degraded soil.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000400017

Biological Activity in a Degraded Alfisol Amended with Sewage Sludge and Cropped with Yellow Serradela (Ornithopus compressus L.)
Provedor de dados: 117
Autores: Celis H,José; Machuca H,Angela; Sandoval E,Marco; Morales C,Patricia.
There are few studies about the impact of sewage sludge on the biological properties in Alfisols of the Chilean Coastal Range drylands. Hence, the objective of this study was to evaluate its effect on the microbial respiration and enzymatic activities of a degraded Alfisol located in the Bío Bío Region (Chile) that was cropped with yellow serradela (Ornithopus compressus L.). Sludge was added to the soil at rates of 15, 30, and 60 t ha-1; he following treatments were defined: L15-P = 15 t ha-1 sludge + O. compressus; L30-P = 30 t ha-1 sludge + O. compressus; L60-P = 60 t ha-1 sludge + O. compressus; L15 = 15 t ha-1 sludge; L30 = 30 t ha-1 sludge; L60 = 60 t ha-1 sludge; CP = non-amended soil, cropped; and C = non-amended soil, no crop. Soil microorganism...
Tipo: Journal article
Palavras-chave: Biosolids; Respiration; Enzymatic activity; Degraded soils; Remediation.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000100020