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Professionals discuss resistance!

On the AgroLeague website, which brings together a community of several hundred farmers favouring an approach centered on “non-chemical” agronomy, a very instructive feedback on a problem of black-grass resistance to herbicides. As the author of the article rightly says, “agronomy is the first herbicide. ” The site: https://www.agro-league.com/ The post: https://www.agro-league.com/blog/comprendre-et-contourner-les-phenomenes-de-resistance-le-retour-dexperience-danthony-frison

Lists of resistance cases: 2020 update available

Knowing the status pest resistance to PPPs in real time allows to adjust practices and avoid unnecessary or ineffective applications. The lists of resistance cases of PPP-resistant insects, weeds, pathogens and mites currently and formerly registered in France have been updated. Do not hesitate to consult them on our website or on the OSF archive. […]

2020 Update of geographical distribution of herbicide resistance

Maps for the 23 weeds with “official” resistance in France in 2020 have been updated and are now online! They are available here !

The 2020 collaborative notes on diseases are online!

Do not hesitate to consult them to know the evolution of resistance in cereal diseases, grapevine diseases and white mold of oilseed rape. Theses notes also include elements of resistance management. See also the archive of these collaborative notes here.

The collaborative note on Herbicides is online

This note was elaborated by ACTA, Arvalis, INRA, ITB, Terres Inovia, FNAMS and Agrosolutions with the participation of COLUMA (Végéphyl) for field data. In addition to a brief summary of resistance mechanisms and a description of good weed control practices (those that do not facilitate the evolution of resistance!), it is accompanied by 17 technical […]

The unified classification of herbicides is online

This classification proposed by R4P makes it possible to assign a unique code to all active substances sharing the same mode of action, regardless of their use. All details here. Files are also archived online at this address, with the classification of insecticides, acaricides and fungicides : https://osf.io/ubhr5/

Update on herbicide resistance cases

The poster of the main cases of herbicide resistance has just been updated (March 2019). It is available in the section “Resistance watch”.

When R4P meets NORBARAG…

NORBARAG is a collaborative network between Scandinavian and Baltic countries. Its work focuses on pesticide resistance and efficacy evaluation. The network includes representatives from Denmark, Estonia, Finland, Latvia, Lithuania, Norway and Sweden. Its objectives and functioning converge with those of R4P. In order to inspire each other, the R4P network presented the activities it carries […]

Extension of registration to JÉR 2019

Registration for the two days of training and exchanges on resistance to plant protection products (JÉR 2019) is extended until noon on 6 March 2019. There are only a few places left, so register here as soon as possible. We hope to meet many of you in Versailles!

The 2019 collaborative note on resistance management of sclerotinia on oilseedrape is online

This note, drafted by a working group of experts from Anses, INRA and Terres Inovia, reviews the current status of resistance of Sclerotinia sclerotiorum to the main fungicide families currently authorised and makes recommendations for sustainable management to limit the risks of resistance evolution and maintain the efficacy of the available solutions. This note (in […]