Pest Management Science (2019) 75, 2910-2915

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Karina Ernst, Julie Elser, George Linz, Hans Kandel, Jason Holderieath, Samantha DeGroot, Steven Shwiff and Stephanie Shwiff (2019)
The economic impacts of blackbird (Icteridae) damage to sunflower in the USA
Pest Management Science 75 (11), 2910-2915
Abstract:
BACKGROUND
Blackbird (Icteridae) damage to ripening sunflower (Helianthus annuus L.) has been a persistent economic issue in the USA for the last five decades. To quantify losses, we surveyed blackbird damage from 2001 to 2013 (excluding 2004) to physiologically mature sunflower in eight states: North Dakota, South Dakota, Texas, Nebraska, Minnesota, Colorado, Kansas, and Vermont.
RESULTS
We pooled data gathered during the most recent 5 years (2009 to 2013) of the survey and found losses averaged $US2.5 million and $US11.3 million for confectionery and oilseed hybrids, respectively. Three states, North Dakota, South Dakota, and Nebraska, had sufficient acreage and bird damage to warrant economic analyses using a regional economic model. The average annual total (direct plus indirect) economic impact of bird damage to sunflower production for North Dakota, South Dakota, and Nebraska was $US18.7 million, $US7.3 million, and $US2.6 million, respectively.
CONCLUSION
This study provides a better understanding of the broader economic implications of bird damage to sunflower by estimating the macroeconomic impacts of lost sunflower production in the region. Additionally, the findings of this study may be used to inform decisions regarding bird management policy by providing policymakers with information to determine the downstream value of bird management and the possible benefits of improved methods that further mitigate losses.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): George M. Linz, Stephanie Shwiff

Research topic(s) for pests/diseases/weeds:
damage/losses/economics


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Agelaius phoeniceus Sunflower (Helianthus annuus) U.S.A. (mid N)
Quiscalus quiscula Sunflower (Helianthus annuus) U.S.A. (mid N)