TRIAL DESCRIPTION AND SUMMARY
 
 The Uniform Regional Hard Red Spring Wheat Nursery (URN) was planted at 21 locations and 
 harvested at 20 in Minnesota, North Dakota, Montana, South Dakota, Wyoming, Wisconsin, Idaho, 
 Nebraska and Manitoba. Data from 21 stations are given in Tables 1-1 to 1-21.
 
 The average yield at the two irrigated stations, Aberdeen, Idaho and Bozeman, Montana, was 61.4 
 and 54.6 Bu/A, respectively. For the entries grown at the nonirrigated stations, the highest 
 average yield was 51.5 Bu/A at Langdon, North Dakota, while the lowest average was 13.5 Bu/A at 
 Highmore, South Dakota.
 
 Average yields and bushel weights in 1975 and for three-year period 197375 for entries in this 
 nursery are shown in Table 2. Era had the highest average yield in 1975, a pattern that has 
 been consistent since its inclusion in the URN in 1968. The entries Era, ND535 and ND528 
 yielded 43.5, 42.7 and 42.5 Bu/A, respectively. North Dakota selection ND527 had the best 
 bushel weight with 61.2 Lbs/Bu followed by 11-64-27 with 60.6 Lbs/Bu.
 
 Miscellaneous agronomic and disease data are summarized in Table 3. The entries ND519 and 
 MN7083 headed in 56 days, while Era, MN70175 and ND527 headed in 62 days. Selkirk and MN7083 
 were the first to mature (88 days), while 11-64-27 was the last (93 days).
 
 Seedling reactions to stem rust are given in Table 4-1. Adult field reactions to stem and leaf 
 rust are shown in Table 4-2 and 4-3, respectively. The existence of genes that control stem 
 rust are still adequate in the region, while the existence of genes that control leaf rust are 
 questionable.