| dc.description | Helminthosporium sativum Pamm., King & Bakke (Cochliobolus sativus), is a widely distributed
cereal pathogen in North Dakota. This fungus causes seedling blight, crown rot and root rot as well as kernel black point and foliaT spotting. Fusarium roseum Lk. f. sp. cerealis (Che.), 'Culmorum' has been associated with root and crown rot but H. sativum has been cited as the main cause of root rot in Canada and appears to be the most important fungus causing root and crown rot in North Dakota. Symptoms of root and crown rot include reduced stands, poor growth, general loss of vigor and dead tillers which significantly reduce yields. Losses caused by these soil borne pathogens are difficult to assess and often overlooked. Damage from soil borne pathogens vary from year to year. The findings from a trial involving the inoculation of the durum cultivars, Wells, Rolette
and Leeds, and the hard red spring cultivars, Thatcher, Chris and Waldron with H. sativum and
F. roseum both separately and in combination to determine varietal reaction to seedling blight and
crown rot is reviewed. Crown rot of these cultivars were evaluated at five North Dakota locations, also. Both F. roseum and H. sativum, alone or in combination, cause seedling blight and crown rot of cereals in North Dakota. Hard red spring wheat could be planted in place of durum if a severe root rot problem exists. | |
