Spatial and temporal stability of weed patches in cereal fields under direct drilling and harrow tillage
The adoption of conservation agriculture (CA) techniques by farmers is changing the dynamics of weed communities in cereal fields and so potentially their spatial distribution. These changes can challenge the use of site-specific weed control, which is based on the accurate location of weed patches...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/185416 |
| Acceso en línea: | https://hdl.handle.net/2117/185416 https://dx.doi.org/10.3390/agronomy10040452 |
| Access Level: | acceso abierto |
| Palabra clave: | Drilling No-till Weed spatial distribution Wheat Barley Lolium rigidum Bromus diandrus Papaver rhoeas Semivariogram Cross-correlation Weed maps Statistical models Cereals -- Conreu Àrees temàtiques de la UPC::Enginyeria agroalimentària::Agricultura::Producció vegetal |
| Sumario: | The adoption of conservation agriculture (CA) techniques by farmers is changing the dynamics of weed communities in cereal fields and so potentially their spatial distribution. These changes can challenge the use of site-specific weed control, which is based on the accurate location of weed patches for spraying. We studied the effect of two types of CA (direct drilling and harrow-tilled to 20 cm) on weed patches in a three-year survey in four direct-drilled and three harrow-tilled commercial fields in Catalonia (North-eastern Spain). The area of the ground covered by weeds (hereafter called “weed cover”) was estimated at 96 to 122 points measured in each year in each field, in 50 cm × 50 cm quadrats placed in a 10 m × 10 m grid in spring. Bromus diandrus, Lolium rigidum, and Papaver rhoeas were the main weed species. |
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