Journal article
Sensor-based assessment of herbicide effects
Department of Plant and Environmental Sciences; University of Copenhagen; Frederiksberg Denmark1
University of Hohenheim; Institute of Phytomedicine; Stuttgart Germany2
Bioforsk-Norwegian Institute for Agricultural and Environmental Research; Ås Norway3
Benakii Phytopathological Institute; Athens Greece4
University of Hohenheim; Institute of Agricultural Engineering; Stuttgart Germany5
Department of Chemical, Biotechnology and Environmental Engineering; University of Southern Denmark; Odense Denmark6
Department of Agroecology and Biometeorology; Czech University of Life Sciences; Prague Czech Republic7
Agri Con GmbH Precision Farming Company; Ostrau Germany8
Julius Kühn-Institute (JKI); Federal Research Centre for Cultivated Plants Institute for Plant Protection in Field Crops and Grassland; Braunschweig Germany9
Aarhus University; Denmark10
...and 0 moreNon-destructive assessment of herbicide effects may be able to support integrated weed management. To test whether effects of herbicides on canopy variables could be detected by sensors, two crops were used as models and treated with herbicides at BBCH 20 using a logarithmic sprayer. Twelve days after spraying at BBCH 25 and 42 days after sowing, nine sensor systems scanned a spring barley and an oilseed rape field experiment sown at different densities and sprayed with increasing field rates of glyphosate and tribenuron-methyl.
The objective was to compare ED50s for crops and weeds derived by the different sensors in relation to crop density and herbicides. Although sensors were not directly developed to detect herbicide symptoms, they all detected changes in canopy colours or height and crop density. Generally ED50s showed the same pattern in response to crop density within herbicide, but there were marked differences between barley and oilseed rape.
We suggest that the results of comparing the various sensor outputs could become a stepping stone to future standardisation for the benefit of the research and development of sensors that will detect herbicide effect on crops and weeds, particularly at the most vulnerable stages of development of the canopy.
Language: | English |
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Publisher: | Wiley |
Year: | 2014 |
Pages: | 223-233 |
ISSN: | 13653180 and 00431737 |
Types: | Journal article |
DOI: | 10.1111/wre.12079 |
ORCIDs: | Streibig, J C , Rasmussen, J , Andreasen, C and Christensen, S |