Weed mapping
working group

Mission of our working group:

We want to provide an overview on the occurrence and spreading of weeds in Europe.

The Working Group wants to exchange data, tools and methods for the assessment and spatial documentation of species and biotypes on arable and non-crop land, e.g. on amenity areas.

Our major tasks are to:

Research topics to be covered

Click on this link to go to the Weed Mapping web site: http://www.ewrs.org/weedmapping where we have an extensive references and reports sections along with more details concerning our working group.

New announcement

Third announcement and Final Programme of the Advanced Workshop on Weed Mapping as a Tool in Plant Ecology and Weed Management

This event is organized by the Weed Mapping Working Group and is supported by the European Weed Research Society (EWRS) in cooperation with two Universities, the Agricultural University of Athens and the Czech University of Life Sciences Prague.

Date: 16 – 18 September 2019
Venue: Mediterranean Agronomic Institute of Chania (MAICH) - Crete, Greece

New Click the document link to download the Final Programme of the Advanced workshop in Chania. FINAL PROGRAM_ADVANCED WORKSHOP ON WEED MAPPING_MAICH_CHANIA CRETE 2019.pdf (250 Kb) New

New Click the document link to download the Third announcement: 3rd Announcement_ Advanced Workshop _Weed Mapping_MAICH_CRETE 2019.pdf (485 Kb)) New

Click on this link to open or download the Guidelines for abstract and poster preparation


Chair: Prof. Dr. Garyfalia Economou

Laboratory of Agronomy
Department of Crop Science
Agricultural University of Athens
Address: Iera Odos, Str., 11855, Athens, Greece
Office Phone : +30 210- 5294756
FAX: +30 210- 5294482
Cell phone: +30 6974732229
E-mail: economou@aua.gr


The minutes from the Summer School: Weed Mapping as a Tool in Plant Ecology and Weed Management are now available. Click here to view them or to download them (6.9 Mb).

Organized by the EWRS Weed Mapping Working Group, in cooperation with Czech University of Life Sciences in Prague, the Agricultural University in Athens, and the Trimble Company.

More details in this file: Summer School on Weed Mapping_Web.pdf

You can download the programme by clicking on this link: SUMMER SCHOOL FINAL PROGRAM.pdf (231 KB)

Duration of the programme: 6 days
Tentative date: 16-21 July, 2018
Venue: Czech University of Life Sciences Prague, Czech Republic

Scope: Weed science students to take knowledge and experience in implementation of classical and new tools (methods) in weed mapping through theoretical courses and practical training in fields.


· Production of weed maps
· Identification of weed frequency ranks
· Methodological training in the collection of data
· Introduction into specific statistics and geostatistics tools
· Analysis of results in relation to environmental and farm data
· Analysis of the spatial weed distribution

Target group:
· 20-25 BSc., MSc. and Ph.D. students in weed science, crop protection and plant ecology

Thematic issues of the program are as follows:

· Application areas: arable weeds, vegetation of pastures and meadows, invasive weeds, rare weeds, resistant weeds
· Assessments methods for different crops and scale approaches
· Statistical methods for spatial and non-spatial statistical evaluation
· Preparation and interpretation of maps
· Implementation in weed management

Certificate of attendance.

Contact persons: Falia Economou (economou@aua.gr), Hansjoerg Kraehmer (Kraehmer-Hofheim@t-online.de), Michaela Kolarova (mkolarova@af.czu.cz)

More information will be given in the October EWRS Newsletter.

The proceedings of the 5th International Symposium "Weeds and Invasive Plants" which was jointly organized by three working groups of the EWRS: "Weed Mapping", "Germination and Early Growth" and "Invasive Plants" is now available:

Uludağ A, Economou G, Bohren C, Torresen K, Jabran K. (Eds.). 2017. Proceedings of the 5th International Symposium on weeds and invasive plants, a joint meeting of the EWRS Working Groups: Weed Mapping, Germination and Early Growth, and Invasive Plants. 10-14 October 2017, Chios, Greece, 112 pages. ISBN: 978-605-60595-8-2. Click here to download the proceedings as a pdf file (800 KB).

An unofficial meeting has been held in Prague (12-15th February 2014) in the frame of preparation for the upcoming "Training seminar for weed mapping". Prof. Soukup and Dr. Kolarova organized the meeting in the Life Science University of Prague where Dr. Kraehmer, Prof. Stefanic and Prof. Economou participated in a brainstorming putting the rules of the training course. Additionally, Dr, Kraehmer presented the "tools and the practical approaches for weed mapping" which will be the baseline for the short term tasks of our working Group.

Two documents are available for download concerning this seminar:

Weed Mapping Workshop (2).doc (55 KB)

Weed Mapping Tools and Practical Approaches (1).ppt (2.5 MB)

The proceedings of the workshop "Novel and sustainable weed management in arid and semi-arid agro ecosystems and weed mapping" are now available. This was a joint workshop of the Weed management in arid and semi-arid climate working group and of the Weed mapping working group that took place September 29th to October 3rd, 2013 in Chania, Crete, Greece.

The proceedings are available here:
EWRS_Chania_Proceedings_2013.pdf (1.4 Mb)