University of KentuckyCollege of Agriculture

KY Silage Corn Hybrid Performance, 2009

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Table 1. Corn Hybrid Performance, Combined Locations, Kentucky, 2009
    Tons/A 1 Milk Yield 2   NEL 4 NEG 4 Forage Quality, % 5 Moist.

Brand

Hybrid

35% DM lbs/ton lbs/acre TDN 3 Mcal/lb Mcal/lb CP ADF NDF NDFD Lignin %
Mycogen TMF2H918 33.8 3431 40600 70 0.80 0.44 6.8 23 41 65 3.0 64.5
Pioneer 31G70 HHXRR2 32.1 3273 36800 75 0.78 0.51 6.5 23 40 59 2.7 61.5
Northrup King N82V-3000GT 30.9 3368 36500 76 0.81 0.53 6.4 21 38 62 2.4 61.7
Asgrow DKC-RX940 RR2 30.4 3550 37700 79 0.80 0.56 6.7 21 39 61 2.8 66.1
Dyna-Gro V5683VT3 29.7 3173 32900 74 0.78 0.51 6.4 23 38 30 2.8 62.4
Wyffels W8681 PP 29.6 3195 33200 76 0.80 0.53 6.5 21 38 58 3.0 64.2
Caverndale Farms CF 889 YGVT/Triple 29.5 3361 34700 77 0.81 0.54 6.4 19 35 59 1.9 60.7
Wyffels W9211 29.3 3476 35600 73 0.77 0.50 6.0 21 38 55 2.2 67.1
Beck's B6733 HXR 29.2 3434 35100 75 0.79 0.52 6.8 22 39 59 2.9 63.5
Southern States SS777 RR2YGPL 29.2 3269 33400 76 0.80 0.53 6.1 23 39 60 3.2 60.0
Pioneer 31R87 RR2 28.9 3125 31600 70 0.72 0.45 6.1 26 44 54 3.6 66.4
DeKalb DKC67-87 RR2/YGCB 28.7 2890 29000 69 0.69 0.43 6.2 28 48 53 3.9 63.9
Caverndale Farms CF 914 YGVT/Triple 28.1 3295 32400 74 0.77 0.50 6.4 23 40 59 3.0 64.9
Beck's B5684 VT3 27.8 3319 32300 78 0.82 0.55 6.1 20 35 60 2.8 58.5
Southern States SS842 RR2YGCB 26.4 3440 31800 77 0.80 0.53 6.9 23 40 62 3.1 66.3
DeKalb DKC63-42VT3 26.1 3519 32200 74 0.78 0.51 6.3 21 38 53 2.9 66.5
Caverndale Farms CF 866 GT 26.1 3385 30900 75 0.78 0.51 6.7 22 39 58 2.7 64.5
Northrup King N78N-3000GT 25.8 3064 27700 77 0.73 0.54 6.4 25 44 57 3.4 64.6
Dyna-Gro 57V05 25.5 3271 29200 73 0.76 0.49 6.1 23 39 53 3.2 65.7
Mycogen F2F700 22.7 3682 29300 72 0.83 0.46 7.1 23 49 65 2.4 64.6
  LSD (0.05) 3.7                      
  average 28.5 3326 33145   0.78   6.4 22.5 40.1 57 2.9 63.9
1 Yields adjusted to 35% dry matter; highest numerical yield is bold with gray box; bold yields are not significantly different from highest yield.
2 Milk yield calculated with MILK2000.>
3 Total digestible nutrients.
4 Net energy for lactation (NEL) and gain (NEG).
5 Quality parameters based on percent dry weight, except for NDFD, which is percent of NDF.

 

Table 2. Corn Hybrid Performance, Adair County, Kentucky, 2009

 

 

Tons/A 1 Milk Yield 2   NEL 4 NEG 4 Forage Quality, % 5 Moist.

Brand

Hybrid

35% DM lbs/ton lbs/acre TDN 3 Mcal/lb Mcal/lb CP ADF NDF NDFD Lignin %
Dyna-Gro V5683VT3 34.0 3259 38800 80 0.87 0.59 7.7 18 28 59 2.3 58.8
Pioneer 31G70 HHXRR2 33.3 3031 35300 74 0.77 0.50 6.4 23 41 58 2.5 59.1
Caverndale Farms CF 889 YGVT/Triple 32.9 3071 35300 76 0.80 0.54 6.8 21 38 61 2.2 57.5
Mycogen TMF2H918 32.9 3340 38400 76 0.80 0.53 6.5 23 41 64 3.0 62.8
Northrup King N82V-3000GT 32.5 3196 36300 77 0.82 0.54 6.8 21 37 64 2.8 59.3
Pioneer 31R87 RR2 30.9 3028 32800 70 0.72 0.45 6.5 25 43 55 3.9 65.3
Beck's B6733 HXR 30.2 3448 36400 75 0.80 0.53 7.5 21 37 58 3.0 66.2
Wyffels W8681 PP 30.0 2994 31400 79 0.85 0.58 7.5 18 33 59 2.6 63.1
Southern States SS777 RR2YGPL 29.4 3176 32600 79 0.83 0.57 7.0 21 37 63 3.4 57.0
Caverndale Farms CF 914 YGVT/Triple 28.5 3218 32100 75 0.79 0.52 7.1 23 40 64 3.1 62.1
Southern States SS842 RR2YGCB 28.0 3524 34500 80 0.85 0.58 7.3 19 34 66 2.9 62.4
DeKalb DKC67-87 RR2/YGCB 27.2 2596 24700 69 0.67 0.42 6.7 32 52 58 4.4 62.7
Asgrow DKC-RX940 RR2 26.2 3522 32400 79 0.80 0.57 7.1 23 41 65 3.0 66.2
Beck's B5684 VT3 26.1 3219 29400 79 0.83 0.57 6.8 20 36 65 2.6 58.2
Dyna-Gro 57V05 25.9 3353 30400 75 0.80 0.52 7.0 20 35 54 2.7 64.0
Northrup King N78N-3000GT 25.6 2994 26800 78 0.76 0.55 6.6 24 43 59 3.1 63.3
Caverndale Farms CF 866 GT 21.1 3369 24800 74 0.76 0.50 7.5 24 41 58 3.3 69.8
Mycogen F2F700 21.0 3690 27100 74 0.84 0.49 7.9 25 57 63 2.5 65.6
DeKalb DKC63-42VT3 6
Wyffels W9211 6
  LSD (0.05) 5.1                      
  average 28.6 3224 32194 76 0.80 0.53 7.0 22.2 39.7 61 3.0 62.4
1 Yields adjusted to 35% dry matter; highest numerical yield is bold with gray box; bold yields are not significantly different from highest yield.
2 Milk yield calculated with MILK2000.
3 Total digestible nutrients.
4 Net energy for lactation (NEL) and gain (NEG).
5 Quality parameters based on percent dry weight, except for NDFD, which is percent of NDF.
6 Hybrids were lodged in all three replications and ears were removed, most likely from raccoons. No yield data was collected.

Agronomics, Adair County, 2009 Previous Crop: corn Planted: May 21, 2009 Target Seed Rate: 28,000 seeds/a
Randomized Trial Tillage: Conventional Harvested: Sep. 2, 2009 Actual Stand: 27,000 plants/a
3 replications Cooperator: Bruce Held Soil Type: Etowah silt loam  

 

Table 3. Corn Hybrid Performance, Boyle County, Kentucky, 2009

 

 

Tons/A 1 Milk Yield 2   NEL 4 NEG 4 Forage Quality, % 5 Moist.

Brand

Hybrid

35% DM lbs/ton lbs/acre TDN 3 Mcal/lb Mcal/lb CP ADF NDF NDFD Lignin %
Mycogen TMF2H918 34.8 3522 42900 64 0.80 0.35 7.1 23 41 65 3.0 66.2
Asgrow DKC-RX940 RR2 34.5 3578 43200 78 0.79 0.55 6.3 20 37 57 2.6 66.0
Caverndale Farms CF 866 GT 31.1 3400 37000 75 0.79 0.52 5.9 21 38 57 2.0 59.2
Pioneer 31G70 HHXRR2 30.3 3514 37300 75 0.78 0.51 6.6 23 40 59 2.9 65.2
DeKalb DKC67-87 RR2/YGCB 30.2 3183 33600 69 0.71 0.44 5.7 24 44 47 3.4 65.1
Beck's B5684 VT3 29.5 3418 35200 76 0.81 0.53 5.4 19 34 55 2.9 58.8
Northrup King N82V-3000GT 29.4 3539 36400 75 0.79 0.52 5.9 21 39 59 2.0 64.0
Wyffels W9211 29.3 3476 35600 73 0.77 0.50 6.0 21 38 55 2.2 67.1
Wyffels W8681 PP 29.3 3396 34800 73 0.75 0.48 5.4 24 43 57 3.3 65.3
Southern States SS777 RR2YGPL 29.0 3361 34100 73 0.76 0.49 5.2 24 41 56 3.0 63.0
Beck's B6733 HXR 28.2 3420 33800 75 0.78 0.51 6.1 22 40 60 2.7 60.8
Caverndale Farms CF 914 YGVT/Triple 27.5 3372 32400 72 0.75 0.48 5.6 24 41 54 2.8 69.0
Caverndale Farms CF 889 YGVT/Triple 27.2 3650 34700 77 0.82 0.54 6.0 18 33 57 1.5 62.9
Pioneer 31R87 RR2 26.9 3222 30400 70 0.72 0.45 5.6 26 46 53 3.2 67.5
DeKalb DKC63-42VT3 26.1 3519 32200 74 0.78 0.51 6.3 21 38 53 2.9 66.5
Northrup King N78N-3000GT 26.1 3133 28600 75 0.70 0.52 6.1 27 45 55 3.7 65.9
Dyna-Gro V5683VT3 25.4 3086 27400 68 0.68 0.42 5.1 28 47 68 3.3 66.0
Dyna-Gro 57V05 25.2 3189 28100 70 0.72 0.45 5.2 25 43 52 3.7 67.3
Southern States SS842 RR2YGCB 24.9 3355 29200 73 0.74 0.48 6.5 27 46 58 3.2 70.1
Mycogen F2F700 24.5 3673 31400 69 0.81 0.43 6.2 22 40 66 2.3 63.5
  LSD (0.05) 5.2                      
  average 28.5 3400 33915 73 0.76 0.48 5.9 23.0 40.7 57 2.8 65.0
1 Yields adjusted to 35% dry matter; highest numerical yield is bold with gray box; bold yields are not significantly different from highest yield.
2 Milk yield calculated with MILK2000, using the corn processor option.
3 Total digestible nutrients.
4 Net energy for lactation (NEL) and gain (NEG).
5 Quality parameters based on percent dry weight, except for NDFD, which is percent of NDF.

Agronomics, Boyle County, 2009 Previous Crop: Corn Planted: May 20, 2009 Target Seed Rate: 32,000 seeds/a
Randomized Trial Tillage: Conventional Harvested: Sep. 11, 2009 Actual Stand: 32,000 plants/a
3 replications Cooperator: Caverndale Farms Soil Type: Dunning silt loam  

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Procedures for the 2009 Kentucky Silage Corn Hybrid Performance Report

Silage Plots, Adair County, 2009. Corn adjacent to the research plots was harvested previously.

Objective:
To provide unbiased forage yield and quality performance data for corn hybrids commonly grown for silage in Kentucky.

General Procedures:
Hybrids were evaluated for silage performance on cooperating farms in Adair County and Boyle County.

Every effort was made to conduct the tests in an unbiased manner according to accepted agronomic practices. Representatives from seed companies submitted hybrids for a total of 20 hybrids. Corn seed was planted by university personnel or third-party contractors, and not any seed company. Fertility and pest management were conducted by each cooperating farmer. University of Kentucky personnel harvested, weighed, chopped and packaged corn for quality analysis.

Hybrids at both locations were planted in three replications at each farm. Hybrids were arranged in a random design. Two 10-ft sections of each hybrid were harvested by hand from each plot. The entire harvested corn sample was weighed. Five to six whole plants from each hybrid were chopped through a silage chopper and a subsample was collected. A kernel processor was used at Boyle County and not at Adair County. Whole plant weights were averaged across all three replications to obtain a whole plant yield.

Forage quality analyses were composite samples of each location and were analyzed by Dairy One Forage Lab, who also calculated milk yield using MILK2000.

Hybrid performance is recorded in Table 1 (Combined data), Table 2 (Adair County) and Table 3 (Boyle County). Table 1 provides the performance of hybrids across two environments and is a better indicator of hybrid performance next season.

Explanation of Terms:
Milk Yield: calculated with MILK2000 (Univ. of Wisconsin)
TDN: total digestible nutrients
NEL: net energy for lactation: Main energy value for dairy ration balancing
NEG: net energy for gain.
CP: crude protein
ADF: acid detergent fiber
NDF: neutral detergent fiber: higher NDF generally indicates lower forage intake and lower animal performance.
NDFD: neutral detergent fiber digestibility: based on 48 h digestion and reported as a percent of NDF.
Lignin: indigestible fiber.
LSD: Least Significant Difference. A statistical measurement to identify field variability and differences between hybrids.

Research conducted by:
County Extension Agents for Agriculture: Nick Roy, Adair County; Jerry Little, Boyle County; Dan Grigson, Lincoln County; Tom Mills, Rockcastle County; Jay Hettmansperger, Garrard County; Linda McClanahan, Mercer County; Will Stallard, Casey County; Richard Whitis, Pulaski County; Keenan Turner, emeritus; and
Plant & Soil Sciences Department: Chad Lee, James Dollarhide, Katie Russell, and Krista Brown.
Available online at: http://www.uky.edu/Ag/GrainCrops/varietytesting.htm

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