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Título

Assessing the opportunity for site-specific management of Avena sterilis in winter barley fields in Spain

AutorRuiz, David ; Escribano, C.; Fernández-Quintanilla, César
Palabras claveSpatial distribution
Pach distribution
Avena sterilis
Barley
Patch spraying
Site-specific management
Fecha de publicación2006
EditorWiley-Blackwell
CitaciónWeed Research 46: 379-387 (2006)
ResumenThe abundance of Avena sterilis in dryland barley fields was studied in four Spanish provinces. During two growing seasons, differential geopositioning system (DGPS)-geo-referenced A. sterilis infestations were obtained in 31 fields. The majority of the infestations were concentrated in few large but irregularly shaped patches, with a higher number of smaller and more regular patches accounting for a small proportion of the infestation. A multitude of very small and irregular patches completed the inventory. The implications of this spatial structure were studied. Site-specific adjusteddose herbicide application offered 61–74% potential herbicide savings. However, given the low levels of infestation and the low economic returns obtained in most of the provinces, the most profitable strategy was generally no herbicide application. Site-specific treatments were advantageous only in high-returns systems. Because few large patches provided the majority of the infestation, zone-specific treatments would be advisable, until such time that weed detection and site-specific applications technologies become more efficient.
Descripción8 páginas, ilustraciones y tablas estadísticas.
URIhttp://hdl.handle.net/10261/46239
ISSN0043-1737
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