Table 3. Location comparison of mean dry weight yields of eight corn hybrids evaluated for silage in replicated small plot trials at four REC locations in Tennessee during 2020. Analysis included hybrid performance across a 1 yr (2020), 2 yr (2019-2020) and 3 yr (2018-2020) period.
| Hybrid | Herb. Pkg.† | Insect Pkg.† | Entry | Avg. Yield Dry Weight (tons/acre) | Knoxville (tons/acre) | Crossville (tons/acre) | Spring Hill (tons/acre) | Springfield (tons/acre) | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hybrid | Herbicide Pkg.‡ | Insect Pkg.‡ | Avg. Yield Dry Weight (tons/acre) | MS Avg. Yield Dry Weight | Avg. Yield Dry Weight (tons/acre) | MS Avg. Yield Dry Weight | Avg. Yield Dry Weight (tons/acre) | MS Avg. Yield Dry Weight | Knoxville (tons/acre) | Knoxville (tons/acre) | Knoxville (tons/acre) | Crossville (tons/acre) | Crossville (tons/acre) | Crossville (tons/acre) | Spring Hill (tons/acre) | Spring Hill (tons/acre) | Spring Hill (tons/acre) | Springfield (tons/acre) | Springfield (tons/acre) | Springfield (tons/acre) |
|||||||||||||
| 1 yr‡ | 2 yr | 3 yr | 1 yr | 2 yr | 3 yr | 1 yr | 2 yr | 3 yr | 1 yr | 2 yr | 3 yr | 1 yr | 2 yr | 3 yr | |||||||||||||||||||
| 7.4 | A | 7.9 | A | 6.1 | A | 7.7 | A | 7.8 | A | ||||||||||||||||||||||||
| Dyna-Gro D55VC80 | RR | V2TP | CS19005 | 7.1 | A | 7.4 | A | 5.7 | A | 7.1 | A | 8.2 | A | ||||||||||||||||||||
| Croplan CP5678 | RR | VT2P | CS17001 | 7.0 | A | 7.7 | A | 8.1 | A | 8.1 | A | 8.8 | A | 8.9 | A | 6.0 | A | 7.8 | A | 8.3 | A | 7.1 | A | 7.3 | A | 7.9 | A | 6.7 | A | 6.8 | A | 7.2 | A |
| Croplan CP5900S*** | RR | VT2P | CS16001 | 6.9 | A | 7.9 | A | 6.4 | A | 7.2 | A | 6.1 | A | ||||||||||||||||||||
| DeKalb DKC 70-64 | RR | VT2P | CS20002 | 6.7 | A | 7.3 | A | 5.4 | A | 7.7 | A | 6.6 | A | ||||||||||||||||||||
| DeKalb DKC 64-44 | RR,LL | SSX | CS20003 | 6.7 | A | 7.4 | A | 5.7 | A | 7.3 | A | 6.4 | A | ||||||||||||||||||||
| Dyna-Gro D57VC17 | RR | V2TP | CS19007 | 6.6 | A | 7.5 | A | 7.6 | A | 7.1 | A | 7.9 | A | 8.0 | A | 5.5 | A | 7.4 | A | 7.6 | A | 7.1 | A | 7.5 | A | 7.8 | A | 6.6 | A | 7.0 | A | 7.1 | A |
| Croplan CP5700S*** | RR | VT2P | CS18005 | 6.6 | A | 7.1 | A | 5.4 | A | 7.8 | A | 5.9 | A | ||||||||||||||||||||
| Average | 6.6 | 0.0 | 0.0 | 7.1 | 0.0 | 0.0 | 5.4 | 0.0 | 0.0 | 7.8 | 0.0 | 0.0 | 5.9 | 0.0 | 0.0 | ||||||||||||||||||
| Standard Error | 6.9 | 7.6 | 7.8 | 7.5 | 8.4 | 8.5 | 5.8 | 7.6 | 7.9 | 7.4 | 7.4 | 7.8 | 6.8 | 6.9 | 7.1 | ||||||||||||||||||
| L.S.D..05 | 0.46 | 0.79 | 0.56 | 0.52 | 0.81 | 0.50 | 0.30 | 1.91 | 1.16 | 0.57 | 0.48 | 0.55 | 0.59 | 0.38 | 0.34 | ||||||||||||||||||
| C.V. | N.S. | N.S. | N.S. | N.S. | N.S. | N.S. | N.S. | N.S. | N.S. | N.S. | N.S. | N.S. | N.S. | N.S. | N.S. | ||||||||||||||||||
| Plots per entry (reps x locs.) | 12 | 12 | 12 | 12 | 11 | 10 | 8 | 9 | 11 | 12 | 16 | 14 | 14 | 13 | 12 | ||||||||||||||||||
* 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 signficiant difference (LSD) mean separation test.
Questions about table data?
Virginia Sykes vsykes@utk.edu
Virginia Sykes vsykes@utk.edu
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