Crop-Weed interactions

The EWRS Working Group "Crop-Weed Interactions" focuses on the interactions between crop and weed plants occurring after emergence of weedy plants in a crop stand. Attention is given to a fundamental understanding of processes governing crop-weed interactions as well as the utilization of this knowledge for improved weed management.

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Germination and Early Growth

The scope of the working group is: From weed seeds enter the soil to emerged seedlings (early growth) and from formation of vegetative reproductive organs to above ground shoots are formed.

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Herbicide Tolerant Varieties

Herbicide tolerant varieties is for this WG defined as the umbrella description for varieties that become tolerant through mutagenesis, gene-editing techniqies as well as for varieties that are improved via genetic modification.

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Invasive Plants

Invasive Alien Plants are creating new problems worldwide as new weeds in managed and unmanaged areas as well as being among main causes of biodiversity loss. Alongside global change, new introduction of alien species are inevitable and will be bigger problem if required measures cannot be taken. In addition introductions and impacts have increased combined affect with other drivers such as climate change and disturbing habitats so on.

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Optimising Herbicide Use in an IWM Context

The objective of the WG is to promote research and exchange of information on the optimum use of herbicides in Integrated Weed Management programmes.

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Parasitic Weeds

A parasitic plant is an angiosperm (flowering plant) that attaches itself morphologically and physiologically to its host (another plant) by a modified root (the haustorium). Depending on the host organ it is attached to, two main types of parasitic plants can be distinguished: stem parasites and root parasites.

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Physical and Cultural Weed Control

The Physical and Cultural Weed Control Main Subject Area is a working group for the development of physical weed control and its implementation in sustainable agriculture.

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Site-Specific Weed Management

Site Specific Weed Management (SSWM) is based on the fact that weed populations are commonly irregularly distributed within crop fields and it implies applying chemical and/or physical weed control measures only where and when they are really needed.

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Weeds and Biodiversity

We are a group of weed scientists, agroecologists, botanists and specialists from others disciplines, who are interested in weeds from a conservation perspective, in the composition of the arable floral in response to management tools, in ecosystem services provided by weeds, and in the role of weeds in supporting food webs and the implications this has for the control of weed communities.

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Weed Management in Arid and Semi-Arid Climate

Recent climate change generated an agronomical shift towards more irrigated cropping systems in arid and semi-arid regions, leading towards shifts in weed species and biodiversity changes. As a working group, our mission is to share and promote collaborative research in order to create sustainable weed management in the arid and semi-arid countries of Europe under the projected climate change. We want to create new and improved weed management options suitable to the regional changes.

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Weed Management Systems in Vegetables

The WG aims to improve the development of the Integrated Weed Management System to support farmers to produce healthy and environmentally sustainable vegetables.

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European Weed Mapping

The objectives of the EWRS Weed Mapping WG is: i) to provide an overview on the occurrence and spreading of weeds in Europe and other continents and ii) to exchange data, tools and methods for the assessment, tempo spatial documentation of species and biotypes on field crops, orchards and non-crop land (natural / urban / historical landscape).

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Herbicide Resistance

We will facilitate the effective management of herbicide resistance by fostering understanding, co-operation and communication between industry, government, academic and farmers.

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Education and training

The WG Education and Training aim to increase interaction and knowledge dissemination between the different members of the EWRS. By providing training courses and workshops in different fields of weed science, the WG aims to cover a broad range of topics ranging from theoretical courses to practical trainings in the field. This offered activities focus on participants from weed science as well as crop science, plant science and ecology.

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