| Oakes Irrigation Research Site | |||||||||
| Corn Row Width, Population Study | 2008 | ||||||||
| Harvest | Test | Grain | Ear | ||||||
| Moisture | Weight | Yield | Population | Ears/Plant | Heigth | Silking | |||
| % | lb/bu | bu/ac | plants/ac | inches | Date | ||||
| Hybrid | |||||||||
| Dekalb DKC4710 | 20.3 | 55.6 | 198.1 | 33251 | 1.01 | 46 | 7/24 | ||
| Pioneer P38H65 | 22.8 | 56.7 | 228.2 | 34146 | 0.97 | 52 | 7/25 | ||
| Mean | 21.5 | 56.2 | 213.2 | 33698.6 | 1.0 | 49.1 | 7/25 | ||
| C.V. % | 3.8 | 2.9 | 11.5 | 4.6 | 3.3 | 8.0 | |||
| LSD.05 | 0.6 | NS | 18.4 | NS | 0.0 | 3.0 | |||
| Row Width1(Row) | |||||||||
| 15 | 21.6 | 56.0 | 209.8 | 33832 | 0.99 | 50 | 7/25 | ||
| 30 | 21.6 | 56.2 | 213.8 | 33360 | 0.98 | 48 | 7/25 | ||
| 30pr | 21.5 | 56.2 | 215.9 | 33904 | 1.00 | 49 | 7/25 | ||
| C.V. % | 4.7 | 2.0 | 6.2 | 5 | 3.7 | 3.5 | |||
| LSD.05 | NS | NS | NS | NS | NS | NS | |||
| Population2(Pop) | |||||||||
| 25K | 21.8 | 55.9 | 197.2 | 28568 | 1.01 | 48 | 7/24 | ||
| 30K | 21.7 | 56.0 | 216.2 | 33868 | 0.98 | 50 | 7/25 | ||
| 35K | 21.2 | 56.6 | 226.1 | 38660 | 0.98 | 50 | 7/25 | ||
| C.V. % | 4.6 | 1.3 | 6.3 | 3.5 | 5.9 | 3.5 | |||
| LSD.05 | NS | 0.4 | 7.8 | 683 | NS | 1.0 | |||
| Hybrid by Row | |||||||||
| DKC4710 15 | 20.2 | 55.4 | 191.5 | 33396 | 1.02 | 46 | 7/24 | ||
| P38H65 15 | 23.0 | 56.6 | 228.1 | 34267 | 0.97 | 53 | 7/25 | ||
| DKC4710 30 | 20.6 | 55.6 | 202.0 | 32815 | 1.00 | 46 | 7/25 | ||
| P38H65 30 | 22.6 | 56.8 | 225.6 | 33904 | 0.95 | 51 | 7/25 | ||
| DKC4710 30pr | 20.1 | 55.8 | 200.9 | 33541 | 1.01 | 46 | 7/24 | ||
| P38H65 30pr | 22.8 | 56.7 | 230.8 | 34267 | 0.99 | 53 | 7/25 | ||
| Hybrid by Population | |||||||||
| DKC4710 25k | 20.9 | 54.8 | 178.8 | 27660 | 1.06 | 44 | 7/23 | ||
| P38H65 25k | 22.6 | 57.0 | 215.5 | 29476 | 0.95 | 51 | 7/25 | ||
| DKC4710 30k | 20.4 | 55.4 | 201.6 | 34050 | 0.98 | 46 | 7/24 | ||
| P38H65 30k | 23.0 | 56.6 | 230.9 | 33687 | 0.97 | 53 | 7/25 | ||
| DKC4710 35k | 19.6 | 56.6 | 214.1 | 38042 | 0.98 | 48 | 7/25 | ||
| P38H65 35k | 22.7 | 56.6 | 238.1 | 39277 | 0.98 | 53 | 7/25 | ||
| Row by Pop | |||||||||
| 15 25K | 21.7 | 55.5 | 191.3 | 28096 | 1.04 | 48 | 7/24 | ||
| 30 25k | 21.7 | 56.2 | 199.4 | 28750 | 0.97 | 47 | 7/24 | ||
| 30pr 25k | 21.9 | 56.0 | 200.8 | 28858 | 1.02 | 48 | 7/24 | ||
| 15 30k | 21.6 | 56.0 | 211.8 | 34086 | 0.97 | 50 | 7/25 | ||
| 30 30k | 21.8 | 55.8 | 217.4 | 33215 | 0.97 | 50 | 7/25 | ||
| 30pr 30k | 21.7 | 56.2 | 219.5 | 34304 | 0.99 | 50 | 7/25 | ||
| 15 35k | 21.5 | 56.6 | 226.3 | 39313 | 0.97 | 51 | 7/25 | ||
| 30 35k | 21.2 | 56.6 | 224.7 | 38115 | 0.99 | 49 | 7/25 | ||
| 30pr 35k | 20.7 | 56.5 | 227.2 | 38551 | 0.99 | 51 | 7/25 | ||
| Hybrid by Row by Pop | |||||||||
| DKC4710 15 25k | 20.6 | 54.0 | 168.4 | 27443 | 1.10 | 45 | 7/23 | ||
| P38H65 15 25k | 22.8 | 57.0 | 214.3 | 28750 | 0.97 | 51 | 7/25 | ||
| DKC4710 30 25k | 21.0 | 55.4 | 185.5 | 27443 | 1.02 | 44 | 7/24 | ||
| P38H65 30 25k | 22.4 | 57.1 | 213.3 | 30057 | 0.92 | 50 | 7/25 | ||
| DKC4710 30pr 25k | 21.1 | 55.1 | 182.6 | 28096 | 1.07 | 44 | 7/23 | ||
| P38H65 30pr 25k | 22.8 | 56.9 | 219.0 | 29621 | 0.97 | 52 | 7/25 | ||
| DKC4710 15 30k | 20.1 | 55.6 | 194.4 | 34630 | 0.96 | 46 | 7/25 | ||
| P38H65 15 30k | 23.0 | 56.5 | 229.2 | 33542 | 0.97 | 53 | 7/26 | ||
| DKC4710 30 30k | 21.1 | 54.8 | 204.8 | 33324 | 1.00 | 47 | 7/24 | ||
| P38H65 30 30k | 22.6 | 56.8 | 230.0 | 33106 | 0.95 | 52 | 7/25 | ||
| DKC4710 30pr 30k | 20.0 | 56.0 | 205.5 | 34195 | 0.99 | 46 | 7/24 | ||
| P38H65 30pr 30k | 23.4 | 56.4 | 233.6 | 34413 | 1.00 | 53 | 7/25 | ||
| DKC4710 15 35k | 19.9 | 56.7 | 211.8 | 38115 | 0.98 | 48 | 7/24 | ||
| P38H65 15 35k | 23.1 | 56.4 | 240.9 | 40511 | 0.96 | 54 | 7/25 | ||
| DKC4710 30 35k | 19.7 | 56.8 | 215.8 | 37680 | 1.00 | 46 | 7/26 | ||
| P38H65 30 35k | 22.8 | 56.5 | 233.7 | 38551 | 0.99 | 51 | 7/25 | ||
| DKC4710 30 35k | 19.2 | 56.2 | 214.6 | 38333 | 0.98 | 48 | 7/25 | ||
| P38H65 30pr 35k | 22.3 | 56.9 | 239.9 | 38768 | 1.00 | 54 | 7/26 | ||
| 1Row widths are in inches. Two rows were planted 8-inches apart on 30-inch centers in the 30pr | |||||||||
| row width configuration. | |||||||||
| 2Population is x 1,000. Example 35k = 35,000 plants/ac | |||||||||
| Planting date = May 9 ; Previous crop soybean ; Harvest date = October 31 | |||||||||
| Irrigation = 13"; Fertilizer Rate lb/ac: N = 188, P2O5 = 44, K2O = 55, S = 22 | |||||||||
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