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

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