THE UNIFORM REGIONAL HARD RED SPRING WHEAT NURSERY The 22 entries in the 1970 uniform regional hard red spring wheat nursery are listed below: Entry C.I. or Year No. Cross or variety Sel. No. entered Source 1 MARQUIS 3461 1929 Canada 2 JUSTIN 13462 1959 ND 3 SELKIRK 13100 1953 Canada 4 CHRIS 13751 1960 USDA-MN 5 NEEPAWA RL4200 1967 Canada 6 FTA/61-107 S6579 1968 USDA-ND 7 ND140/ND363 ND490 1970 ND 8 ND140/ND363 ND491 1970 ND 9 ND363/ND269 ND496 1970 ND 10 ND259/CLY//CLY/ND122/3/JT/ND142 ND487** 1970 ND 11 JT*2/4/ND259/CLY//CLY/ND122/3/JT/ 5/ND363 ND499** 1970 ND 12 PJ60/3/HRY*7/P54//KI84/7*WIS250/ 4/KI84/4*WIS250 WIS271** 1967 USDA-WI 13 do H678-1-6-9** 1969 USDA-WI 14 NRNIO/BVR14//6*CNT MT6723** 1969 USDA-MT 15 SI/3/NRN10/BVR14//5*CNT MT6830** 1970 USDA-MT 16 do MT6834** 1970 USDA-MT 17 FTR/3/NRNIO/BVR]4//5*CNT MT6839** 1970 USDA-MT 18 ERA** 13986 1968 USDA-MN 19 FLETCHER** 13985 1968 USDA-MN 20 WORLD SEEDS 1812** 14585 1970 World Seeds, Inc. 21 BONANZA** 14077 1970 DeKalb Ag. Res. 22 691157** 1970 Northrup King ** Semidwarf The list above shows the pedigree, selection number and the year a variety or selection was first entered in the uniform test. The number of semidwarf selections grown in this nursery for the period 1968, 1969 and 1970 was 6, 10 and 13, respectively. Data from 20 stations are given in Tables 3-1 to 3-20. The average yield at the two irrigated stations, Bozeman and Carrington, was 50.6 and 51.2 Bu/A, respectively. For the entries grown at the non-irrigated stations, the highest average yield was 41.7 Bu/A at Laramie, while the lowest average yield was 15.5 Bu/A at Sheridan (both stations in Wyoming). Average bushel weights and yields for entries grown in 1969-70 and 1970 are shown in Table 4. Nine of the thirteen semidwarf selections ranked above the check variety Chris. For the second year in a row, Era ranked first with 35.8, while Chris yielded 28.9 Bu/A. World Seed 1812 had the best bushel weight with 60.3 lbs/Bu, followed by Era and ND496 with a similar value of 60.1 lbs/Bu. Miscellaneous agronomic and disease data are summarized in Table 5. The entry H678-1-6-9 headed 4 days earlier than Chris, while Fletcher was 3 days later than Chris. Bonanza was the first to mature, MT6839 the last. The semidwarfs were about 5-P shorter than the standard check varieties. Stem rust was relatively scarce in the spring wheat region in 1970. All of the varieties, with the exception of Marquis, had adequate resistance. The shattering percentage was relatively high for Justin, Selkirk, ND499 and ND490. Seedling reactions to stem rust of entries in The Uniform Regional Nursery are presented in Table 6-1. Most of the lines provide adequate resistance, although races 151 and 15B-6 appear to be the most virulent. Adult field reactions to leaf and stem rust are given in Table 6-2. Rust reactions at Winnipeg are shown in Table 6-3.