Lena Ulber

Julius Kühn-Institut

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Author response for "Current and future glyphosate use in European agriculture"

Paul Neve Maor Matzrafi Lena Ulber Bàrbara Baraibar Roland Beffa

10.1111/wre.12624/v2/response1

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The utility of the ‘Arable Weeds and Management in Europe’ database: Challenges and opportunities of combining weed survey data at a European scale

Weed Research (2022)

Helen Metcalfe Jana Bürger Christoph von Redwitz A. Cirujeda Silvia Fogliatto

Over the last 30 years, many studies have surveyed weed vegetation on arable land. The 'Arable Weeds and Management in Europe' (AWME) database is a collection of 36 of these surveys and the associated management data. Here, we review the challenges associated with combining disparate datasets and explore some of the opportunities for future research that present themselves thanks to the AWME database. We present three case studies repeating previously published national scale analyses with data from a larger spatial extent. The case studies, originally done in France, Germany and the UK, explore various aspects of weed ecology (community composition, management and environmental effects and within-field distributions) and use a range of statistical techniques (canonical correspondence analysis, redundancy analysis and generalised linear mixed models) to demonstrate the utility and versatility of the AWME database. We demonstrate that (i) the standardisation of abundance data to a common measure, before the analysis of the combined dataset, has little impact on the outcome of the analyses, (ii) the increased extent of environmental or management gradients allows for greater confidence in conclusions and (iii) the main conclusions of analyses done at different spatial scales remain consistent. These case studies demonstrate the utility of a Europe-wide weed survey database, for clarifying or extending results obtained from studies at smaller scales. This Europe-wide data collection offers many more opportunities for analysis that could not be addressed in smaller datasets; including questions about the effects of climate change, macro-ecological and biogeographical issues related to weed diversity as well as the dominance or rarity of specific weeds in Europe.

Arable land

Survey data collection

10.1111/wre.12562

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Glyphosateinsatz nicht überziehen

Lena Ulber Peter Zwerger

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Das Bewusstsein ist zwar vorhanden ...

DLG-Mitteilungen : Agrarmanagement, Trends & Perspektiven (2020)

Lena Ulber Han Zhang

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Integriertes Unkrautmanagement zur Vermeidung von Herbizidresistenz*

Verlag Eugen Ulmer eBooks (2017)

Peter Zwerger Bernd Augustin Jörg Becker Christof Dietrich Rolf Forster

10.1399/jfk.2017.04.03

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Integriertes Unkrautmanagement zur Vermeidung von Herbizidresistenz^*

DOAJ (DOAJ: Directory of Open Access Journals) (2017)

Peter Zwerger Bernd Augustin Jörg Becker Christof Dietrich Rolf Forster

10.5073/jfk.2017.04.03

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Two sides of one medal: Arable weed vegetation of Europe in phytosociological data compared to agronomical weed surveys

Applied Vegetation Science (2022)

Jana Bürger Filip Küzmič Urban Šilc Florian Jansen Erwin Bergmeier

Abstract Questions Two scientific disciplines, vegetation science and weed science, study arable weed vegetation, which has seen a strong diversity decrease in Europe over the last decades. We compared two collections of plot‐based vegetation records originating from these two disciplines. The aim was to check the suitability of the collections for joint analysis and for addressing research questions from the opposing domains. We asked: are these collections complementary? If so, how can they be used for joint analysis? Location Europe. Methods We compared 13 311 phytosociological relevés and 13 328 records from weed science, concerning both data collection properties and the recorded species richness. To deal with bias in the data, we also analysed different subsets (i.e., crops, geographical regions, organic vs conventional fields, center vs edge plots). Results Records from vegetation science have an average species number of 19.0 ± 10.4. Metadata on survey methodology or agronomic practices are rare in this collection. Records from weed science have an average species number of 8.5 ± 6.4. They are accompanied by extensive methodological information. Vegetation science records and the weed science records taken at field edges or from organic fields have similar species numbers. The collections cover different parts of Europe but the results are consistent in six geographical subsets and the overall data set. The difference in species numbers may be caused by differences in methodology between the disciplines, i.e., plot positioning within fields, plot sizes, or survey timing. Conclusion This comparison of arable weed data that were originally sampled with a different purpose represents a new effort in connecting research between vegetation scientists and weed scientists. Both collections show different aspects of weed vegetation, which means the joint use of the data is valuable as it can contribute to a more complete picture of weed species diversity in European arable landscapes.

Arable land

Weed science

10.1111/avsc.12460

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Untersuchung pflanzenbaulicher Maßnahmen zur Zurückdrängung von Herbizidresistentem Acker-Fuchsschwanz (Alopecurus myosuroides)

DOAJ (DOAJ: Directory of Open Access Journals) (2018)

Christina Wellhausen Lena Ulber Dagmar Rissel

In einem Feldversuch am Standort Wendhausen (Nahe Braunschweig) werden seit Herbst 2016 verschiedene Masnahmen zur Reduzierung eines starken Besatzes von Acker-Fuchsschwanz (Alopecurus myosuroides) auf zwei Versuchsflachen gepruft. Fur den Acker-Fuchsschwanz sind Resistenzen gegen ACCase-Hemmer sowie partiell gegen ALS-Hemmer bekannt. Als Prufvarianten werden unterschiedliche Bodenbearbeitungsverfahren, Aussaatzeitpunkte, Aussaatverfahren sowie Anwendungszeitpunkte der Bodenherbizide getestet. Die Bodenbearbeitungsverfahren unterteilen sich in wendende und nicht-wendende Bodenbearbeitung. Als Aussaatverfahren wurden eine klassische Aussaat (mit Bodenbearbeitung zur Saat) und die Anlage eines falschen Saatbetts 3-4 Wochen vor Aussaat (mit anschliesender Direktsaat) gewahlt. Ergebnisse zur Entwicklung der Besatzdichten aus dem ersten Versuchsjahr zeigen eine deutliche Reduzierung des Acker- Fuchsschwanzes durch wendende Bodenbearbeitung, insbesondere in Kombination mit der Anlage eines falschen Saatbetts. Die geringste Reduktion wurde in den Varianten mit nicht-wendender Bodenbearbeitung und klassischer Aussaat beobachtet. Insgesamt ist bei einer Beibehaltung einer Fruchtfolge mit, die ausschlieslich aus Winterungen besteht, eine vollstandige Zuruckdrangung des Acker-Fuchsschwanzes nur sehr schwer zu erreichen.

10.5073/jka.2018.458.012

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Deutschlandweites Monitoring zur ALS-Resistenz bei Kamille-Arten

Julius-Kühn-Archiv (2012)

Lena Ulber E. Svoboda B. Jaser F. G. Felsenstein Peter Zwerger

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Characterizing a scentless mayweed population with reduced sensitivity towards VLCFA herbicides.

Julius-Kühn-Archiv (2020)

Dagmar Rissel Lena Ulber

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