English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/46052
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE   Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Using thermal and hydrothermal time to model seedling emergence of Avena sterilis ssp. ludoviciana in Spain

AutorLeguizamón, E. S.; Fernández-Quintanilla, César ; Barroso, J.; González-Andújar, José Luis
Palabras claveWeibull model
Seedling emergence
Thermal time
Hydrothermal time
Avena sterilis
Fecha de publicación2005
EditorWiley-Blackwell
CitaciónWeed Research 45:149-156 (2005)
ResumenHistorical records on the field emergence of seedlings of Avena sterilis in winter cereal crops were used to develop thermal/hydrothermal models to predict the emergence of this weed as a function of meteorological conditions. When water was not a limiting factor, a Weibull function provided a good description of the relationship between thermal time and seedling emergence. The variability in the rate of seedling emergence observed under these conditions was associated with variation in the differential between measured and base temperatures. When water was limiting in the soil, the rate of seedling emergence was reduced, a different function was required to describe the process. The use of a hydrothermal model enabled the use of a single function to describe the patterns of seedling emergence of the nine site-years considered in the study. Using this model we can conclude that 70% seedling emergence will be reached, under very diverse conditions, within 300 hydrodegree days. The hydrothermal model proposed was validated with independent seedling emergence data, supporting the idea that this model is robust enough to be used as a predictive tool for seedling emergence of A. sterilis in a variety of conditions.
Descripción8 páginas, ilustraciones y tablas estadísticas.
URIhttp://hdl.handle.net/10261/46052
ISSN0043-1737
Aparece en las colecciones: (ICA) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
restringido.pdf21,67 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.