Table 6-b. Middle Tennessee (Spring Hill) Yield and Feed Quality Characteristics

Table 6-b. By location mean dry weight yield and feed quality characteristics of eight corn hybrids evaluated for silage in small plot replicated trials at the Middle Tennessee AgResearch and Education Center in Spring Hill, Tennessee during 2021. Analysis included hybrid performance across a 1 yr (2021), 2 yr (2020-2021) and 3 yr (2019-2021) period.

HybridHerb. Pkg.†Insect Pkg.†Avg. Yield Dry Weight
(tons/acre)
     Crude Protein¶
(% dm)
     Neutral Detergent Fiber¶
(% dm)
     30 hr In Vitro Neutral Detergent Fiber Digestibility¶ (% of NDF)     
1 yr‡2 yr3 yr1 yr2 yr3 yr1 yr2 yr3 yr1 yr2 yr3 yr
Croplan CP5900SRRVT2P4.8A5.9A6.4A9.2A8.7A8.3A46.8A49.2A49.8A58.2A53.1A51.5A
Croplan CP5700SRRVT2P4.2A5.7A6.4A9.2A8.6A8.5A46.8A49.4A48.2A59A53.2A52.3A
Dyna-Gro D55VC80RRV2TP4.3A6A9.5A9A47.6A48.9A57.7A53A
DeKalb DKC 70-64 RIBRRVT2P4.2A5.7A8.4A8.2A47.7A49.6A57.1A53A
DeKalb DKC64-64 RIBRRVT2P4.7A8.5A50.9A57.8A
DeKalb DKC67-66 RIBRRVT2P4.9A8.2A48.4A56.2A
DeKalb DKC61-80 RIBRRVT2P4.9A8.8A47.6A57.9A
Croplan CP5370RRVT2P4.7A8.9A46.2A60.4A
Average4.65.86.48.88.68.447.749.349585351.9
Standard Error0.41.510.30.50.41.32.31.81.253.5
L.S.D..05N.S.N.S.N.S.N.S.0.5N.S.N.S.N.S.N.S.N.S.N.S.N.S.
C.V.121015655556444
Plots per entry (reps x locs.)369369369369

HybridHerb. Pkg.†Insect Pkg.†Starch¶
(% dm)
     Acid Detergent Fiber¶
(% dm)
     Total Digestable Nutrients¶
(% dm)
     Net Energy for Lactation¶
(Mcals/lb)
     
1 yr2 yr3 yr1 yr2 yr3 yr1 yr2 yr3 yr1 yr2 yr3 yr
Croplan CP5900SRRVT2P16.9A19.9A20.6A26A26.9A27.3A73.8A70.8A68A0.67A0.67A0.65A
Croplan CP5700SRRVT2P18.1A20.6A21.7A25.2A26.8A26.1A73.8A70.4A68.8A0.67A0.66A0.66A
Dyna-Gro D55VC80RRV2TP18.8A21.3A24.6A25.5A73.1A70.9A0.67A0.67A
DeKalb DKC 70-64 RIBRRVT2P16.3A20.1A25.1A26.7A73.3A70.3A0.67A0.67A
DeKalb DKC64-64 RIBRRVT2P15.2A27.4A73.7A0.68A
DeKalb DKC67-66 RIBRRVT2P17.3A26.3A72.8A0.67A
DeKalb DKC61-80 RIBRRVT2P19.2A25.6A73.1A0.67A
Croplan CP5370RRVT2P19.3A24A74.6A0.68A
Average17.620.521.225.526.526.773.570.668.40.670.670.66
Standard Error1.33.21.90.81.40.90.732.900.010.01
L.S.D..05N.S.N.S.N.S.N.S.N.S.N.S.N.S.N.S.N.S.N.S.N.S.N.S.
C.V.131711568233133
Plots per entry (reps x locs.)369369369369

* Hybrids marked with an asterisk were in the top performing “A” group for yield across locations within two (**) or three (***) consecutive years of the previous three-year evaluation period.
† For a full description of abbreviated biotech traits, see table 10.
‡ Hybrids that have any MS letter in common, within a column, are not significantly different at the 5% level of probability using a least significant difference (LSD) mean separation test.
¶ Nutritive content values were calculated on a 100% dry matter (DM) basis.

 

Virginia Sykes
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