2017 Corn Variety Trial Results from the Panhandle

Corn. UF/IFAS Photo: Thomas Wright.

The results are in for the 2017 Panhandle Corn Variety Trial.  This summarization includes 2017 field corn small plot replicated variety trial (OVT) from the West Florida Research and Education Center in Jay, Florida. It shows the performance of the following 23 field corn varieties in the OVT:

  1. AgriGold A6499VT2RIB
  2. AgriGold A6544VT2RIB
  3. AgriGold A6572VT2RIB
  4. AgriGold A6659VT2RIB
  5. AgriGold A6711VT2PRO
  6. DeKalb DKC 64-35
  7. DeKalb DKC 65-94
  8. DeKalb DKC 66-59
  9. DeKalb DKC 67-44
  10. DeKalb DKC 68-26
  11. DeKalb DKC 70-27
  12. Dyna-Gro D57VP51
  13. Dyna-Gro D58VC65
  14. Dyna-Gro D58VC37
  15. Dyna-Gro CX17117
  16. Syngenta N76A-3000GT
  17. Syngenta N78S-3111
  18. Syngenta N83D-3111
  19. Terral REV 25BHR26
  20. Terral REV 28R10
  21. Terral REV 28BHR18
  22. Croplan 5290 DGVT2P/RIBCPF
  23. Croplan 5678 VT2P/RIB

The trial began on 21 March, 2017, field corn varieties were planted at 2.2 seed/ft. (32,000 seed/A) under strip-tillage in a Red Bay fine sandy loam soil which had been planted to cotton in summer 2016. Plots were four rows spaced 36 in. apart (12 ft wide) by 25 ft long. Corn varieties were replicated in four randomized complete blocks. Prior to planting any vegetation present was killed with an application of Roundup at 1 qt./A.  Dual Magnum (1.3 pt/A) + Atrazine (3 pt/A) were applied 22 March 2017.  Fertilizer (27.9-5.1-10.1) was applied at 888 lb/A on 19 April. Roundup at 22 oz./A was applied 2 May for weed control.  The fungicide Priaxor was applied at 8 oz./A on 11 May for disease control to the OVT trial. Data was collected from the two center rows of each plot. Plots were harvested on 14 August.

Rainfall in Jay, FL for April and July of 2017 was below average, while for May was 2.84 inches above average, June was 12.94 inches above average and August was 3.08 inches above average Average represents the mean for the past 55 years of records kept at WFREC, Jay.

Table 1.  Weather conditions during 2017 field corn trial.

 

Month

 

Total Rainfall (in)

Average minimum air temperature (oF) Average maximum air temperature (oF)
April 3.05 (1.75 below average) 57.3 79.6
May 7.34 (2.84 above average) 61.7 83.3
June 20.34 (12.94 above average) 70.3 84.4
July 2.50 (5.55 below average) 72.4 90.3
August 9.60 (3.08 above average) 72.4 88.7

Stand count for all varieties ranged from 1.7 to 2.2 plants/ft (25,340 to 31,800 plants/A).  All varieties except REV 28BHR18 had populations in excess of 28,500 plants/A.  Corn lodging was 5% or less for all varieties tested.  Corn yield ranged from 193 to 252 bu/A.  Several varieties produced more than 225 bu/A including AgriGold A6659, Dyna-Gro D57VP51, D58VC37, CX17117, Syngenta N83D-3111 and Terral REV 25BHR26.  These varieties are shown in bold in the table below.   The varieties A6499, N76A, N78S and 5290 had yields less than 210 bu/A. Test weights were in a range from 50.6 to 58.3 lb/bu (56 lb/bu is the standard test weight for shelled corn).  A6499, A6572, A6711, D58VC65, D58VC37, 5290 and 5678 had test weights greater than 57 lb/bu while DKC 66-59, DKC 70-27, N76A and N78S had test weights lower than 55 lb/bu.  NOTE THAT THIS REPRESENTS ONLY YEAR OF DATA.

Table 2:  OVT field corn variety percent lodging, test weight and yield, Jay, FL 2017.

Brand Hybrid Ear Height (inches)

7/24/17

 

% Lodging

8/9/17

 

Yield (bu/A)

8/14/17

Test Wt.(lb/bu)

8/14/17

1 AgriGold A6499VT2RIB 33 0 207 57.2
2 AgriGold A6544VT2RIB 39 1 214 55.7
3 AgriGold A6572VT2RIB 41 0 216 58.1
4 AgriGold A6659VT2RIB 38 2 252 56.2
5 AgriGold A6711VT2PRO 36 2 214 57.0
6 DeKalb DKC 64-35 37 1 216 56.0
7 DeKalb DKC 65-94 38 1 210 55.5
8 DeKalb DKC 66-59 40 0 217 54.3
9 DeKalb DKC 67-44 39 0 220 55.6
10 DeKalb DKC 68-26 40 3 222 56.1
11 DeKalb DKC 70-27 41 0 220 54.1
12 Dyna-Gro D57VP51 40 3 229 56.1
13 Dyna-Gro D58VC65 32 5 215 57.2
14 Dyna-Gro D58VC37 37 5 225 57.0
15 Dyna-Gro CX17117 43 1 225 56.3
16 Syngenta N76A-3000GT 37 1 193 50.6
17 Syngenta N78S-3111 38 2 209 54.1
18 Syngenta N83D-3111 42 0 226 53.9
19 Terral REV 25BHR26 42 0 235 56.7
20 Terral REV 28R10 39 2 222 56.8
21 Terral REV 28BHR18 43 8 220 56.4
22 Croplan 5290 DGVT2P/RIBCPF 37 1 207 58.3
23 Croplan 5678 VT2P/RIB 36 1 221 57.1
LSD   4.0 4.1 19 1.1
CV   7.3% 6.1% 6.0% 4.4%

*Determined from counts of two, 25-ft rows per plot.

LSD = Fisher’s Protected LSD (P=0.05)

Varieties with yields 225 bu/A or more are in bold.

Multi-Year Summary

 Several varieties were evaluated in both 2016 and 2017 with a few in 2015, 2016 and 2017 (Table 3).  Dyna-Gro 57VP51, Terral REV 25BHR26 and DeKalb DKC 70-27 had yields above 215 bu/A when averaged over two years while Dyna-Gro D57VP51, Syngenta N83D and Terral REV 25BHR26 yielded in excess of 200 bu/A when averaged over three years.

 Table 3.   Multi-Year Corn Variety Performance, WFREC, Jay, FL (2015-2017).

Brand Variety 2017 2-Year Average 3-Year Average
Dyna-Gro D57VP51 229 218 208
Dyna-Gro D58VC65 215 208
Syngenta N76A-3000GT 209 200 194
Syngenta N83D-3111 226 202 201
Terral REV 25BHR26 235 223 209
DeKalb DKC 66-59 217 211
DeKalb DKC 68-26 220 211
Dekalb DKC 70-27 220 216

A father and son in a cornfield.