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Management of yellow dwarf disease in Europe in a post-neonicotinoid agriculture

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  • L. Mc Namara
  • K. Gauthier
  • L. Walsh
  • G. Thébaud
  • M. Gaffney
  • E. Jacquot
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<mark>Journal publication date</mark>1/07/2020
<mark>Journal</mark>Pest Management Science
Issue number7
Volume76
Number of pages10
Pages (from-to)2276-2285
Publication StatusPublished
Early online date3/05/20
<mark>Original language</mark>English

Abstract

Barley/cereal yellow dwarf viruses (YDVs) cause yellow dwarf disease (YDD), which is a continuous risk to cereals production worldwide. These viruses cause leaf yellowing and stunting, resulting in yield reductions of up to 80%. YDVs have been a consistent but low-level problem in European cereal cultivation for the last three decades, mostly due to the availability of several effective insecticides (largely pyrethroids and more recently neonicotinoids) against aphid vectors. However, this has changed recently, with many insecticides being lost, culminating in a recent European Union (EU) regulation prohibiting outdoor use of the neonicotinoid-insecticide compounds. This change is coupled with the growing challenge of insecticide-resistant aphids, the lack of genetic resources against YDVs, and a knowledge deficit around the parameters responsible for the emergence and spread of YDD. This means that economic sustainability of cereal cultivation in several European countries including France and United Kingdom is now again threatened by this aphid-vectored viral disease. In this review, we summarize the current knowledge on the YDV pathosystem, describe management options against YDD, analyse the impacts of the neonicotinoid ban in Europe, and consider future strategies to control YDV.