Journal of Nematology (2005) 37, 366-367

P.A. Donald, P.E. Pierson, S.K. St. Martin, P.R. Sellers, G.R. Noel, A.E. MacGuidwin, J. Faghihi, V.R. Ferris, C. R. Grau, D.J. Jardine, H. Melakeberhan, T.L. Niblack, W.C. Stienstra, G.L. Tylka, T.A. Wheeler and D.S. Wysong (2005)
Soybean cyst nematode-resistant and susceptible cultivar yield in infested soil in North-Central USA
Journal of Nematology 37 (3), 366-367
44th Annual Meeting, Society of Nematologists, Fort Lauderdale, Florida, 9-13 July, 2005
Abstract: The soybean cyst nematode (Heterodera glycines Ichinohe) (SCN) is distributed throughout soybean production regions of the United States and is of major economic importance. To assess the impact on yield of planting SCN-resistant and susceptible soybean cultivars in SCN-infested or -noninfested fields on soybean yield, research sites were established in 1994 and 1995 in 63 fields that were either SCN-infested or noninfested in 10 states in the north central USA. Eight SCN-resistant and eight SCN-susceptible public soybean cultivars representing maturity groups (MG) I to IV were planted at each site. Soil samples were taken at planting to determine initial nematode population density, SCN race, and soil classification. Soybean yields ranged from 658 to 3840 kg/ha overall. SCN-resistant cultivars yielded more than susceptibles in SCN-infested sites but not at noninfested sites. Highly significant interactions were measured among initial nematode population, cultivar, and location. Owing to the significance of location, no region-wide predictive equations could be developed for yield loss based on initial nematode population densities in the soil. Yield loss due to SCN was confounded by other stress factors which included temperature and moisture extremes.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Douglas J. Jardine, Terry A. Wheeler, Haddish Melakeberhan, Terry L. Niblack, Virginia R. Ferris, Gregory R. Noel

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host
damage/losses/economics

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Heterodera glycines	Soybean (Glycine max)	U.S.A. (mid N)