New Variety Seeding Date Trial at Aberdeen, 1997
Methods: Each variety was planted on 3 different dates with each date being 10 days apart.
Results: All 3 varieties showed a decrease in yield with a delay in planting. See the bottom of the table for yield reduction for each day in delay of planting.
Table 1. Agronomic data for new variety seeding date trial at Aberdeen, irrigated, 1997.
Yield |
Test Weight |
Date Head |
Height |
Heads/ |
Kernels/ |
|
| Variety + Date | (bu/A) |
(lb/bu) |
fr. Jan. 1 |
(in.) |
2 ft |
Head |
| Idaho 377s date 1 | 105.1 |
61.3 |
169 |
36 |
57 |
43 |
| Idaho 377s date 2 | 82.6 |
61.0 |
174 |
33 |
49 |
41 |
| Idaho 377s date 3 | 60.7 |
58.9 |
179 |
32 |
57 |
41 |
| Pomerelle date 1 | 132.2 |
61.2 |
173 |
36 |
79 |
42 |
| Pomerelle date 2 | 86.5 |
58.3 |
180 |
31 |
62 |
39 |
| Pomerelle date 3 | 92.0 |
57.6 |
185 |
34 |
65 |
41 |
| Whitebird date 1 | 101.4 |
61.9 |
172 |
34 |
56 |
42 |
| Whitebird date 2 | 76.0 |
60.7 |
176 |
31 |
55 |
45 |
| Whitebird date 3 | 68.1 |
60.3 |
183 |
35 |
53 |
42 |
| Average | 89.4 |
60.1 |
176.9 |
33.5 |
59.3 |
41.6 |
| LSD.10 | 20.0 |
1.2 |
1.2 |
4.0 |
10.3 |
5.5 |
| CV% | 20.5 |
1.9 |
0.6 |
10.9 |
15.9 |
12.2 |
Planting Dates: Date 1= 4/11/97, Date 2= 4/21/97, Date 3= 5/2/97
Yield reduction for each day in delay of planting from 4/11/97 to 5/2/97 (21 days):
Idaho 377s= 2.1 bu/A per day
Pomerelle= 1.9 bu/A per day
Whitebird= 1.6 bu/A per day
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