English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/64888
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Long-term study of properties of a xerofluvent of the Guadalquivir River Valley under organic fertilization

AuthorsMelero Sánchez, Sebastiana ; Madejón, Engracia ; Herencia, Juan F.; Ruiz Porras, J. C.
Issue Date2008
PublisherAmerican Society of Agronomy
CitationAgronomy Journal 100(3): 611-618 (2008)
AbstractThe long-term effect of inorganic and organic fertilization in a vegetable crop rotation on soil chemical and biochemical properties was investigated in a trial in southern Spain. Two crops were grown in succession, potato (Solanum tuberosum L.) and a mixed-cropped strawberry-onion (Fragaria vesca L.-Allium cepa L.). Total organic carbon (TOC), Kjeldahl-N, bicarbonate-extractable P (Olsen-P), ammonium acetate extractable-potassium (AAE-K), microbial biomass carbon (Cmic), and enzyme activity (dehydrogenase, β-glucosidase, protease, and alkaline phosphatase) were determined in soils in the seventh and eighth year of management comparison. The metabolic quotient (qCO2) and the Cmic to TOC ratio were also calculated. Organically fertilized soils showed significant increases in TOC and Kjeldahl-N, available-P, AAE-K, microbial biomass C, and enzymatic activities compared with those found under inorganically fertilized soils. The qCO2 values were greater in inorganic than in organic fertilized plots indicating a lower microbial community respired at a greater rate in inorganic fertilized soils. The Cmic to TOC ratio in organic plots was lower than in inorganic plots indicating that microorganism in inorganically fertilized soils could have a better efficiency in the conversion of C sources to microbial biomass. Long-term organic fertilization positively affected soil organic matter content, thus improving soil chemical and biological fertility under arid environmental conditions in southwest Spain. However precautions must be taken as excessive accumulation of some nutrients, particularly N and P, can arise from the long-term use of compost.
URIhttp://hdl.handle.net/10261/64888
DOI10.2134/agronj2006.0316
Identifiersdoi: 10.2134/agronj2006.0316
issn: 0002-1962
e-issn: 1435-0645
Appears in Collections:(IRNAS) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.