TRIAL DESCRIPTION AND SUMMARY
The 1996 Uniform Regional Hard Red Spring Wheat Performance Nursery was
planted at 22 locations and harvested at all locations except Madison,
Wisconsin, in Minnesota, North Dakota, South Dakota, Montana, Idaho,
Wyoming, Wisconsin, Washington, and Canada (Table 1). The nursery contained
34 entries, 5 checks, and 29 experimentals. Trials were conducted as
randomized blocks with three replicates. Yield data obtained from Tetonia
and Aberdeen, Idaho, Swift Current, Canada, and Powell, Wyoming, were not
used in any of the-over location averages. Data from each of 20 locations
are given in Tables 2-1 to 2-21.
The highest average yielding location was Aberdeen, Idaho, with 86 bu/A and
the lowest yielding location was Crookston, Minnesota, with 32 bu/A. The
average yield of all locations combined was 50 bu/A and 3 experimental
lines were in the first LSD unit when 16 locations were combined (Tables
2-22 and 2-23). Two entries were earliest to head at 29 days after June 1:
SD3236 and SD3249. The experimental with the highest test weight was
SD3249. Data for experimentals and checks grown for two years are given in
Table 3-1. SBE0050, N92-0434, and SBF0402 were in the first LSD unit for
grain yield. The highest test weight entries were Gunner and MN91309 which
had 60 lb/bu or better.
Stability parameters for entries in 1996 are given in Table 3-2. High
deviations were noted for 9023-FM04C, SD3236, and T1105.
Adult plant field reaction to stem and leaf rust are shown in Tables 4-1
and 4-2. Scab reaction from field inoculation are given in Table 4-3 from
St. Paul and Morris. Incidence and severity were read at St. Paul and %
tombstones (infected kernels) were estimated at both Morris and St. Paul.