Oilseed Rape Pathogens in France

Abstract

In France, a dozen of diseases can affect rapeseed, but Sclerotinia stem rot is the major disease for which chemical control remains the main way to prevent severe attacks. Five fungicide modes of action are effective against Sclerotinia sclerotiorum and some solo or mixed products are registered in France. The history and current status of resistance to these different groups in French oilseed rape crops are presented. Strategies for preventing and managing fungicide resistance are mainly based on the alternation of products from different classes of biochemical modes of action.