Heterodera glycines, Soybean Cyst Nematode (SCN), is a devastating pathogen to Soybeans (Glycines max). The objectives of this M.S. Thesis were to: 1) Identify cover crops that are non-hosts for SCN other than the Gramminaceae, with special references to radishes and mustards, under greenhouse conditions. 2) Select promising cultivars and evaluate them under field conditions. 3) Make initial observations on potential trap crops for SCN management. All soybean cultivars tested were found to have higher SCN population densities at the end of the experiments, compared to the Brassica and Raphanus cultivars. The 2017 research sites had greater mean numbers of SCN eggs compared to the susceptible soybean cultivars. Additionally, PI 88788 soybean at East Lansing in 2016 and Edwardsburg in 2017 had a greater reproductive factor than the susceptible soybean. There was little variability in the impact of Brassica and Raphanus cultivars on SCN under greenhouse conditions. While there was some variability in the field experiments, Brassica and Raphanus cultivars were often not significantly different from each other. They also never resulted in more than 500 eggs per 100 cm3, which indicates all cultivars can safely be used in SCN infested fields.
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