Corn - 1998 Crops Day Report
| Hybrid Corn Hettinger | |||||||||
| Silage | Grain Yield | ||||||||
| Brand | Hybrid | Genetic traits* | Relative matur. | Harvest moist. | 1997 | 1998 | Test weight | 1997 | 1998 |
| days | % | -----Tons/ac**---- | lbs/bu | -----bu/ac***----- | |||||
| Cargill | 1877 | -- | 80 | 75 | 3.99 | 2.16 | 56.5 | 79.7 | 37.6 |
| Cargill | x1801 | -- | 80 | 67 | -- | 2.59 | 52.8 | -- | 37.4 |
| Cargill | HS60A | HS | 108 | 73 | -- | 3.39 | -- | -- | -- |
| Croplan | N2555 | Bt | 86 | 70 | -- | 2.44 | 55.6 | -- | 37.9 |
| Croplan | 212 | -- | 85 | 67 | -- | 2.07 | 54.1 | -- | 32.4 |
| Dekalb | 385B | -- | 88 | 62 | 4.23 | 3.20 | 54.2 | 89.0 | 43.6 |
| Dekalb | 440 | -- | 94 | 70 | -- | 2.83 | 48.3 | -- | 57.8 |
| Dekalb | 431 | -- | 93 | 70 | -- | 2.65 | 51.1 | -- | 44.4 |
| Dekalb | 493 | RR | 99 | 72 | -- | 2.73 | 49.0 | -- | 28.7 |
| Dekalb | 404 | SR | 90 | 70 | -- | 3.04 | 51.4 | -- | 33.0 |
| G. Harvest | 2265 | -- | 88 | 69 | -- | 2.74 | 51.8 | -- | 31.4 |
| G. Harvest | 2274 | -- | 90 | 68 | -- | 2.71 | 50.2 | -- | 38.4 |
| IS/Payco | 4x85 | -- | 85 | 67 | -- | 3.12 | 53.0 | -- | 40.5 |
| Kaystar | 380 | -- | 90 | 72 | -- | 2.48 | 47.4 | -- | 29.6 |
| Kaystar | 330 | -- | 85 | 71 | -- | 2.46 | 50.1 | -- | 33.5 |
| Pioneer | 38W36 | Bt | 94 | 72 | -- | 2.55 | 53.1 | -- | 55.7 |
| Pioneer | 38B22 | Bt+Lib | 92 | 68 | -- | 3.00 | 52.1 | -- | 45.1 |
| Pioneer | 3921 | -- | 86 | 61 | -- | 2.55 | 53.8 | -- | 23.6 |
| Pioneer | 3963 | -- | 79 | 65 | -- | 2.49 | 57.3 | -- | 29.1 |
| Proseed | 180 | -- | 80 | 69 | 5.30 | 2.69 | 55.3 | 87.4 | 37.4 |
| Proseed | 185 | -- | 85 | 74 | 5.69 | 2.67 | 48.3 | 82.3 | 38.3 |
| Trial Mean | -- | -- | -- | -- | 5.17 | 2.69 | 52.2 | 81.6 | 37.9 |
| C.V. % | -- | -- | -- | -- | 24.2 | 13.0 | 2.2 | 11.8 | 28.4 |
| LSD .05 | -- | -- | -- | -- | NS | 0.58 | 1.9 | NS | 17.8 |
| LSD .01 | -- | -- | -- | -- | NS | 0.77 | 2.5 | NS | NS |
Planting date: May 15, 1998
Seeding rate: 21,000 seeds/acre, thinned to 18,000 plants/acre.
Row spacing: 28"
Previous crop: Summer fallow
*Genetic traits: HS = high sugar silage, Bt = European Corn Borer resistance, RR = Roundup herbicide resistance, SR = Sethoxydim herbicide resistance, Lib = Liberty herbicide resistance.
**Silage yields are adjusted to 0% moisture.
***Grain yields are adjusted to 13.5% moisture.
NS = no statistical difference between hybrids.
Harvest date: Silage - September 9, 1998
Grain - October 27, 1998