Effect of neonicotinoid seed treatments on flea beetle damage and performance of Argentine canola (Brassica napus) in 2003-2006

Researcher: Bob Elliott, Larry Mann and Owen Olfert, Agriculture and Agri-Food Canada, Saskatoon, SK

Project Code: CARP 2004-14.2. (See B. rapa CARP 2004-14.1.)

Final Report: June 2007

Summary: The objectives of this study were to determine the effect of neonicotinoid seed treatments on flea beetle damage and the performance of Argentine canola seeded in early and late May. Seed treatments reduced flea beetle damage and improved the performance of open-pollinated and hybrid Argentine canola in all tests. Treatments that provided the longest flea beetle protection usually provided the best seedling establishment, highest plant weight and highest yield. Differences among seed treatments were greater when flea beetle infestations were high than when infestations were low.

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