Dickinson Research Extension Center ~ 1089 State Avenue, Dickinson, ND 58601

Ashley, R.O. and M.P. McMullen. 2002. Evaluation of seed treatments for control of soil-borne pathogens in spring wheat, 2001 [Online]. FUNGICIDE AND NEMATICIDE TESTS. Report No. 57:ST19

Web link (http://www.apsnet.org/online/FNTests/vol57/top.htm) (verified August 20, 2002).

Fungicide seed treatments were evaluated for the control of soil-borne pathogens in a continuous wheat cropping system in southwest North Dakota. Disease evaluations, based on lesion development on the subcrown internode, and evaluations of root color and mass were completed at the soft dough stage. Disease evaluations, grain yield, test weight, and protein were analyzed for differences among seed treatments. Fusarium graminearum, Pythium spp., and Rhizoctonia spp. were isolated from tissue cultures of root and crown tissue taken from the control plots. Fungicide seed treatments allowed plants to develop healthier root systems. Grain yields for three seed treatments were significantly greater than the grain yield of the control. Grain test weight was not significantly improved over the control but one treatment did produce grain with significantly higher protein than the control. No phytotoxicity was observed from seed treatments.