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Patchy weed distribution and site-specific weed control in winter cereals

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Abstract

Site-specific weed control in winter cereals was performed on the same fields every year over a 5-year period (1999–2003). The most common weeds (Apera spica-venti, Galium aparine, Veronica hederifolia, Viola arvensis) were counted by species, at grid points which were georeferenced and the data were analysed spatially. For weed control, weeds were grouped into three classes: grass, broad-leaved weeds (without Galium aparine), and Galium aparine. Based on weed distribution maps generated by the spatial analyses, herbicide application maps were created and site-specific herbicide application was carried out for grouped and or single weed species. This resulted in a significant reduction in herbicide use. Averaging the results for all fields and years, the total field area treated with herbicides was 39% for grass weeds, 44% for broad-leaved weeds (without Galium aparine) and 49% for Galium aparine. Therefore, site-specific weed control has the potential to reduce herbicide use compared to broadcast application, thus giving environmental and economic benefits.

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Acknowledgements

This project was funded by the German Volkswagen Foundation.

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  1. Federal Biological Research Centre for Agriculture and Forestry, Institute for Weed Research, Messeweg 11-12, D-38104, Braunschweig, Germany

    Henning Nordmeyer

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  1. Henning Nordmeyer
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Correspondence to Henning Nordmeyer.

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Nordmeyer, H. Patchy weed distribution and site-specific weed control in winter cereals. Precision Agric 7, 219–231 (2006). https://doi.org/10.1007/s11119-006-9015-8

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