Sensors for Herbicide Efficacy Assessment

J. C. Streibig, J. Rasmussen, D. Andújar, C. Andreasen, T. W. Berge, D. Chachalis, T. Dittmann, R. Gerhards, T. M. Giselsson, P. Hamouz, Claes Lund Dühring Jæger, K. Jensen, R. N. Jørgensen, M. Keller, M. Laursen, H. S. Midtiby, J. Nielsen, S. Müller, H. Nordmeyer, G. PeteinatosJ. Svensgaard, M. Weis, S. Christensen

Research output: Contribution to conferencePosterResearchpeer-review

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Abstract

Nine sensor systems scanned diquat symptoms on barley and oilseed rape ten days after spraying to compare sensor output. Crops were sown in four densities and diquat was applied with a logarithmic sprayer. Only two RGB image systems are used here to illustrate how to compare ED50 parameters in response to crop density. ED50 for the system measuring the excess green index by continuous samples from 40 m altitude dropped somewhat in response to density in both crop species. ED50 for green foliage coverage at discrete samples from 1.5 m altitude did not show the same trend for both crops, for oilseed rape, ED50, however, dropped with increasing density.
Original languageEnglish
Publication date2012
Publication statusPublished - 2012
Externally publishedYes
EventInterdisciplinary Workshop, Site Specific Weed Management: 5th workshop meeting - Denmark 2012 - University of Copenhagen, Copenhagen, Denmark
Duration: 28 May 201231 May 2012

Conference

ConferenceInterdisciplinary Workshop, Site Specific Weed Management
LocationUniversity of Copenhagen
CountryDenmark
CityCopenhagen
Period28/05/201231/05/2012

Bibliographical note

http://www.ewrs.org/SSWM/2012_meeting.asp

5th workshop meeting - Denmark 2012
University of Copenhagen, 28 - 31 May
Interdisciplinary Workshop, Site Specific Weed Management (SSWM)

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