TRIAL DESCRIPTION AND SUMMARY
 
 The Uniform Regional Hard Red Spring Wheat Nursery (URN) was planted at 23 locations and 
 harvested at 20 in Minnesota, North Dakota, Montana, South Dakota, Wyoming, Wisconsin, Idaho, 
 Manitoba, Washington, and Nebraska. Yield data was not reliable ' at Minot, while the hail 
 destroyed the trials at both Carrington and Torrington stations. Data from 21 stations are 
 given in Tables 1-1 to 1-21.
 
 The average yield data at the two irrigated stations, Aberdeen, Idaho, and Bozeman, Montana, 
 was 67.6 and 58.3 Bu/A, respectively. For the entries grown at the non-irrigated stations, the 
 highest average yield was 67.7 Bu/A at Winnipeg, Manitoba, while the lowest average was 12.5 
 Bu/A at Highmore, South Dakota.
 
 Average yields and bushel weights in 1976 and for three-year period 1974-76 for entries in 
 this nursery are shown in Table 2. Era had the highest average yield in the URN from 1968 
 through 1975. The trials of 1976 showed that the entries MN7125 and MN70170 yielded 43.3 and 
 42.4 Bu/A while Era yielded 42.2 Bu/A. This data combined with Minnesota advanced yield data , 
 not shown here, suggested that yield improvements over Era may be possible. Butte the new 
 release from North Dakota had the best bushel weight with 61.8 Lbs/Bu followed by ND536 and 
 MN70202 with 61.7 Lbs/Bu.
 
 Miscellaneous agronomic and disease data are summarized in Table 3. The entries Butte, 
 SD2273 and SD2271 headed in 57 days, while Justin, Era, 11-62-48 and MN70175 headed in 63 days. 
 The maturity range was between 101 to 104 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. Some concern exists about the leaf necrosis diseases, because some 
 cooperators recorded fairly high levels of leaf necrosis. So far, gene(s) that condition ergot 
 resistant has not been identified, but efforts are being devoted to this problem by a few 
 cooperators in this region.