Missouri Dairy Business Update  
Volume 7, Number 3
March 2007

SW MO Corn Silage Variety Trials

This year's high corn prices have encouraged more dairymen in the traditional Southern Missouri dairy belt to take a second look at producing and feeding more corn silage in their rations.

The tables below depict two years of corn silage variety trials from Lawrence County, courtesy of MFA Agri Services, Freistatt.

MFA has conducted corn silage plots on the same farm from the same field, on Schoen Dairy near Freistatt. The difference between the two trials is just a tale of two years. 2006 had a substantial drought but this farm caught a few rains and yields improved.

Table 1. Forage Production in 2006
 
Maturity
67% Moisture
Plot
Hybrid
tons/acre
Rank
DEKALB 66-80 RR
116
22.24
1
Mycogen TMF 2N802 RR
116
16.01
2
MorCorn 4474 RR
114
15.83
3
Rainbow 3158 RR/YG
115
15.37
4
MorCorn 3974 RR/CB
110
15.34
5
DEKALB 54-53 RR/YGCB
104
14.47
6
DEKALB 64-27 RR
114
14.16
7
DEKALB 63-81 RR/YGCB
113
13.94
8
ASGROW 715 RR/YGCB
111
13.73
9
NK 67-D6 GT/CB/LL
109
13.27
10
ASGROW 655 RR
107
13.18
11
NK 70-C7 GT/CB/LL
112
12.07
12
 
Plot Avg.
14.97
 

Table 2. Forage Nutrient Analysis in 2006
 
NEL
  TDN      ADF
NDF
Milk Per Ac.
Plot
Hybrid
(Mcal/lb.)
  (%)     (%)
(%)
(lbs./ac.)
Rank
DEKALB 66-80 RR
0.69
70    29.5
49.7
18473
1
DEKALB 54-53 RR/YGCB
0.80
79    21.6
37.2
16710
2
Mycogen TMF 2N802 RR
0.66
70    32.4
54.7
14595
3
MorCorn 3974 RR/CB
0.72
72    25.6
45.0
14582
4
MorCorn 4474 RR
0.70
72    30.3
51.1
14531
5
Rainbow 3158 RR/YG
0.68
72    32.6
55.9
14425
6
NK 67-D6 GT/CB/LL
0.71
72    24.9
43.6
13940
7
DEKALB 64-27 RR
0.70
72    28.7
49.5
13910
8
DEKALB 63-81 RR/YGCB
0.70
72    28.9
48.9
12696
9
ASGROW 715 RR/YGCB
0.64
69    33.6
55.9
10900
10
ASGROW 655 RR
0.59
66    32.2
54.7
10623
11
NK 70-C7 GT/CB/LL
0.67
75    27.7
50.8
10612
12
Plot Avg.
0.69
71.8  29.0
49.8
13833
 

Plot Conditions in 2006

Planting Date: 4/3/06
Harvest Date: 7/26/05
Fertilizer Applied: 120-20-100
Planting Rate: 26,100
Planting Conditions: Ideal
Tillage: Conventional
Water Mgt.: Dryland
Soil Type: Silt Loam
Previous Crop: Corn


Table 3. Forage Production in 2005
 
 
67% Moisture
Plot
Hybrid
Maturity
tons/acre
Rank
DEKALB 61-72 RR
111
10.99
4
ASGROW 715 RR
111
11.93
2
DEKALB 63-62 RR
113
11.61
3
DEKALB 63-81 RR/YG
113
14.26
1
Pioneer 33R76 RR
114
10.11
6
Mycogen TMF 2N802 RR
116
10.04
7
DEKALB 66-80 RR
116
10.97
5
 
Plot Avg.
11.42
 

Table 4. Forage Nutrient Analysis in 2005
 
NEL
  TDN      ADF
NDF
Plot
Hybrid
(Mcal/lb.)
  (%)     (%)
(%)
Rank
DEKALB 61-72 RR
0.72
69.6    29.6
53.4
4
ASGROW 715 RR
0.72
69.4    30.4
54.4
5
DEKALB 63-62 RR
0.73
70.2    28.1
51.8
2
DEKALB 63-81 RR/YG
0.75
71.1    25.4
46.8
1
Pioneer 33R76 RR
0.71
68.9    31.4
54.6
7
Mycogen TMF 2N802 RR
0.71
69.1    30.9
57.2
6
DEKALB 66-80 RR
0.73
70.0    28.5
52.1
3

Plot Conditions in 2005

Planting Date: 4/4/05
Harvest Date: 7/26/05
Fertilizer Applied: 140-0-150
Planting Rate: 26,100 except for Mycogen at 24,200
Planting Conditions: Ideal
Tillage: Conventional
Water Mgt.: Dryland
Soil Type: Silt Loam
Previous Crop: Corn

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