|
|
Dryland Planted: April 29
Harvested: August 5 |
|
Variety |
Seeding
Rate
Seed/ac |
Heading
Date1 |
Height
in |
Grain
Protein
|
Test
Wt |
Yield
Bu/ac |
|
Legacy |
--- |
59.3 |
25.4 |
12.74 |
44.8 |
44.4 |
|
Coors 37 |
--- |
62.2 |
20.4 |
14.47 |
45.0 |
48.1 |
|
LSD 0.05 |
0.2 |
1.0 |
0.67 |
ns |
3.6 |
|
|
750,000 |
61.5 |
22.4 |
14.12 |
45.5 |
44.0 |
|
|
1,000,000 |
60.7 |
23.8 |
13.85 |
44.4 |
46.8 |
|
|
1,250,000 |
60.5 |
22.6 |
13.28 |
44.8 |
47.7 |
|
|
1,500,000 |
60.5 |
22.8 |
13.17 |
44.9 |
46.6 |
|
LSD 0.05 |
0.3 |
ns |
ns |
ns |
ns |
|
Sprinkle
irrigated Planted: May 13 Harvested:
August 14
|
|
Variety |
Seeding
Rate
Seed/ac |
Heading
Date1 |
Height
in |
Grain
Protein
|
Test
Wt |
Yield
Bu/ac |
| |
|
|
|
|
|
|
|
Legacy |
--- |
51.4 |
26.9 |
13.3 |
48.8 |
97.0 |
|
Coors 37 |
--- |
52.9 |
23.2 |
13.4 |
47.6 |
72.2 |
|
LSD 0.05 |
0.3 |
0.5 |
ns |
0.7 |
3.4 |
|
|
1,000,000 |
52.9 |
25.2 |
13.5 |
48.6 |
80.5 |
|
|
1,250,000 |
52.1 |
25.1 |
13.5 |
48.1 |
84.4 |
|
|
1,500,000 |
52.0 |
24.5 |
13.4 |
48.5 |
85.4 |
|
|
2,000,000 |
51.6 |
25.4 |
13.1 |
47.6 |
88.0 |
|
LSD 0.05 |
0.4 |
ns |
ns |
ns |
4.8 |
|
Flood
irrigated Planted: May 15 Harvested:
August 14
|
|
Variety |
Seeding
Rate
Seed/ac |
Heading
Date1 |
Height
in |
Grain
Protein
|
Test
Wt |
Yield
Bu/ac |
| |
|
|
|
|
|
|
|
Legacy |
--- |
49.9 |
29.3 |
12.0 |
46.7 |
75.8 |
|
Coors 37 |
--- |
51.1 |
23.7 |
12.0 |
48.2 |
77.0 |
|
LSD 0.05 |
0.4 |
0.8 |
ns |
0.6 |
ns |
|
|
1,000,000 |
51.1 |
26.5 |
12.0 |
47.4 |
74.4 |
|
|
1,250,000 |
50.9 |
25.7 |
11.6 |
47.8 |
73.6 |
|
|
1,500,000 |
50.0 |
27.2 |
12.7 |
47.6 |
77.7 |
|
|
2,000,000 |
50.0 |
26.8 |
11.8 |
47.1 |
80.0 |
|
LSD 0.05 |
0.5 |
ns |
ns |
ns |
4.4 |
1 days from planting
Heavy snow fell in early May, after the dryland plots were planted but
before the irrigated plots were planted. Temperatures in May were cooler
than average and hot, dry weather was experienced during grain fill, which
reduced test weights under all conditions. Higher seeding rates resulted in
earlier heading under all conditions tested. Yields under both sprinkler and
flood irrigation were increased by higher seeding rates, but were not
influenced under dryland conditions. Higher seeding rates caused decreased
grain protein under dryland and sprinkle irrigated conditions, but not under
flood irrigation. Both the two-row variety (Coors 37) and the six-row
variety (Legacy) responded similarly to different seeding rates under all
conditions.
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