First detected in Switzerland in 2011, the invasive Drosophila suzukii, spotted wing
drosophila, has caused recurring costs for growers of berries and fruit. Recommended management
approaches rely on a set of methods, tailored to suit crop requirements under the prevailing local
conditions. Control of D. suzukii represents a substantial economic burden for growers, in terms of
material, equipment, new infrastructure and extra labour. However, those growers who invest wisely
to deliver unblemished produce are rewarded with high payoffs. We present insights from a growers’
survey conducted in 2015 and 2016 to gauge the impact of the introduction and establishment of
D. suzukii on Swiss sweet cherry production. The surveyed growers (111 in 2015 and 298 in 2016)
observed the recommended surveillance, sanitation and control measures. The use of insecticides
(78% and 79% of respondents in 2015 and 2016, respectively) and the harvest of all fruits (93% and
59% of respondents in 2015 and 2016, respectively) were the most widespread methods used to
reduce damage. Nearly one-third of the respondents set up enclosure nets. Our economic evaluation
of different scenarios provides a quantitative indication of the potentially incurred costs. We argue
for enhanced stakeholder involvement to raise the acceptance of integrated pest management
practices, and to inform research and outreach by providing insights into the motivations and
barriers to adoption.