Pest Management Science (2018) 74, 992-1000

Eric H. Clifton, Gregory L. Tylka, Aaron J. Gassmann and Erin W. Hodgson (2018)
Interactions of effects of host plant resistance and seed treatments on soybean aphid (Aphis glycines Matsumura) and soybean cyst nematode (Heterodera glycines Ichinohe)
Pest Management Science 74 (4), 992-1000
Abstract:
Background
The soybean cyst nematode, Heterodera glycines, and soybean aphid, Aphis glycines, are invasive, widespread and economically important pests of soybean, Glycine max, in North America. Management of these pests relies primarily on use of pesticides and soybean germplasm with genetic resistance. A 3-year field study and complementary greenhouse experiment were conducted to determine the benefits of host plant resistance (HPR) and pesticidal seed treatments for managing pest populations and preserving soybean yield.
Results
Host plant resistance significantly decreased the abundance of A. glycines and, in most study sites, suppressed H. glycines. Neonicotinoid seed treatment reduced A. glycines abundance on the cultivar that was susceptible to both aphids and nematodes, but abamectin nematicide seed treatment had no effect on H. glycines populations in the field or greenhouse.
Conclusion
These results suggest that the seed treatments included in our experiments may suppress pests, but not consistently for all soybean cultivars or study sites. Ultimately, HPR more consistently reduced pest numbers compared with the use of pesticidal seed treatments. The planting of HPR cultivars should be a primary tool for integrated pest management of both soybean pests.
(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): Erin W. Hodgson, Aaron J. Gassmann

Research topic(s) for pests/diseases/weeds:
control - general
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Heterodera glycines	Soybean (Glycine max)
	Aphis glycines	Soybean (Glycine max)