Silage Corn
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Silage Corn |
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| Fort Collins Results | Fruita Results | Olathe Results |
Colorado farmers cut 80,000 irrigated acres of corn for silage in 2003 averaging 22.5 T/ac and another 10,000 acres of non-irrigated corn averaged 8 T ac. Corn seed required for planting this crop represents annual sales of about $3 million. Weld County produced almost half of the state’s irrigated silage in 2003, 990,000 tons.
Colorado State University personnel evaluate commercial corn silage hybrids at multiple locations to provide Colorado farmers with reliable and unbiased hybrid performance information. In 2004, corn silage hybrids were evaluated at Fort Collins in eastern Colorado and at Fruita and Olathe on the Western Slope. The silage yields given below are reported in tons per acre adjusted to 70% moisture content. Trial yields in 2004 were about 5 T/ac lower than normal for the Front Range at Fort Collins due to the unusually wet and cloudy conditions with lower than normal growing degree days for early maturing silage corn. Fruita and Olathe silage yields were good to very good in 2004. The moisture content at the time of harvest is an indicator of hybrid maturity at harvest.
Corn silage variety performance trial at
Plant |
||||
Hybrid |
Yield |
Moisture |
Height |
Density |
t/ac |
% |
in |
plants/ac |
|
Triumph 1866 (RR) |
26.6 |
74.8 |
87 |
34075 |
Grand Valley SX2535 (RR) |
26.5 |
73.0 |
95 |
34013 |
Mycogen 2D835 |
26.0 |
73.1 |
89 |
33507 |
Grand Valley SX2248 (RR) |
25.9 |
66.4 |
85 |
34398 |
Garst 8270 (RR) |
25.8 |
75.6 |
93 |
33311 |
Mycogen TMF 2M741 (HXI) |
24.8 |
73.3 |
95 |
33944 |
HYTEST TNT-106 (RR) |
24.7 |
70.7 |
87 |
33041 |
NK Brand N72-J5 |
24.1 |
70.7 |
85 |
33095 |
Garst 7850 |
24.0 |
72.2 |
86 |
33196 |
Mycogen TMF 2M696 (HXI) |
23.7 |
70.2 |
91 |
34215 |
Triumph 1416 (RW/RR) |
23.6 |
73.0 |
86 |
32954 |
Garst 8579 (RR) |
23.3 |
69.8 |
89 |
32920 |
Mycogen 2D601 (RR) |
23.2 |
70.4 |
87 |
33691 |
Croplan DS107 |
23.0 |
71.2 |
88 |
34139 |
Croplan DS822 |
20.9 |
76.4 |
85 |
33316 |
Grand Valley SX8709 (RR) |
20.7 |
72.0 |
84 |
34078 |
Average |
24.2 |
72.1 |
88 |
33618 |
LSD(0.30) |
2 |
|||
Corn silage variety performance trial at Fruita1 in 2004.
Plant |
Ear |
||||
Hybrid |
Yield |
Moisture |
Density |
Height |
Height |
t/ac |
% |
plants/ac |
in |
in |
|
ASGROW RX940 (RR2) |
34.2 |
69.3 |
33273 |
116 |
54 |
Grand Valley SX1602 |
33.6 |
68.7 |
33319 |
117 |
53 |
Grand Valley GVX0175 (RR) |
33.5 |
69.0 |
31836 |
124 |
55 |
HYTEST HT7815 (RR) |
31.6 |
69.8 |
32531 |
107 |
48 |
Grand Valley GVX0105 (RR) |
31.5 |
66.6 |
30260 |
113 |
48 |
HYTEST HT7831 (RR) |
31.4 |
69.3 |
32206 |
112 |
52 |
DEKALB DKC69-72 (RR2) |
30.3 |
64.6 |
33967 |
107 |
43 |
ASGROW RX910 |
30.1 |
65.5 |
30863 |
112 |
42 |
Average |
32.0 |
67.8 |
32282 |
114 |
49 |
LSD(0.30) |
2.4 |
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Corn silage variety performance trial at Olathe1 in 2004.
Plant |
Ear |
||||
Hybrid |
Yield |
Moisture |
Density |
Height |
Height |
t/ac |
% |
plants/ac |
in |
in |
|
Grand Valley SX2535 (RR) |
34.0 |
71.2 |
34709 |
129 |
61 |
Grand Valley SX2444 (RR) |
33.9 |
69.3 |
36238 |
121 |
54 |
AgriPro 9646 |
33.6 |
72.6 |
33133 |
122 |
56 |
Garst 8270 (RR) |
32.5 |
73.2 |
34848 |
121 |
55 |
Grand Valley GVX0105 (RR) |
31.6 |
70.8 |
30723 |
125 |
56 |
Garst 8579 (RR) |
29.9 |
67.0 |
33643 |
122 |
54 |
Grand Valley GVX0638 (YGCB) (RR/BT) |
29.4 |
69.8 |
35821 |
116 |
52 |
Average |
32.1 |
70.6 |
34159 |
122 |
55 |
LSD(0.30) |
1 |
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