Person: Wendy and Doug Johnson

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• Neonicotinoid seed treatments in
soybean production are ubiquitous but
recent evidence has called their benefit
to yields and their ecological impact
into question.
• Farmer-cooperators compared soybean
yields from soybeans of the same variety
grown from neonicotinoid-treated
seeds and seeds not treated with a
neonicotinoid.
Key findings
• At each location, there was no measured
effect of seed treatment on
soybean yield.
• Given the lack of measured yield
benefit, the economic practicality of
neonicotinoid seed treatments can be
questioned.

November 19, 2015 

RESEARCH REPORT