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| Northern Region average wheat yields from
the 1997 Universiity of Illinois variety trials. |
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| Source | Variety | Orr | Urbana | DeKalb | Average |
| Public | Caldwell | 59.1 | 56.8 | 65.8 | 60.6 |
| Public | Cardinal | 37.3 | 63.9 | 60.8 | 54.0 |
| Public | Clark | 22.0 | 63.9 | 56.3 | 47.4 |
| Public | Ernie | 56.7 | 71.8 | 67.8 | 65.4 |
| Public | Freedom | 55.1 | 56.8 | 50.7 | 54.2 |
| Public | Grant | 47.8 | 65.5 | 54.9 | 56.1 |
| Public | Hopewell | 43.7 | 64.0 | 54.8 | 54.2 |
| Public | Howell | 52.5 | 64.3 | 62.5 | 59.8 |
| Public | Madison | 57.0 | 83.9 | 63.3 | 68.1 |
| Public | Patterson | 39.9 | 67.7 | 61.1 | 56.2 |
| AgriPro | Clemens | 53.2 | 72.6 | 70.8 | 65.5 |
| AgriPro | Elkhart | 60.7 | 77.6 | 60.7 | 66.3 |
| AgriPro | Foster | 52.8 | 82.6 | 69.0 | 68.1 |
| AgriPro | Pontiac | 50.9 | 58.4 | 62.1 | 57.1 |
| Cole Growers | DG 411 | 59.2 | 70.3 | 73.7 | 67.7 |
| Cole Growers | DG 426 | 49.8 | 71.0 | 60.6 | 60.5 |
| DeRaedt | 7887 | 56.9 | 73.2 | 65.0 | 65.0 |
| Diener Bros. | DB 494 | 67.9 | 80.1 | 81.6 | 76.5 |
| Diener Bros. | DB 555 | 68.1 | 75.7 | 72.3 | 72.0 |
| Erwin-Keith | EK 102 | 53.7 | 66.4 | 62.5 | 60.9 |
| Erwin-Keith | EK 114 | 60.5 | 63.4 | 61.9 | 61.9 |
| Erwin-Keith | EK X011 | 64.6 | 79.1 | 78.6 | 74.1 |
| Erwin-Keith | EK X012 | 59.2 | 75.3 | 73.8 | 69.4 |
| Goertzen | GSR2500 | 48.7 | 60.8 | 57.1 | 55.5 |
| Growmark | FFR 558 | 49.9 | 72.0 | 66.2 | 62.7 |
| LG Seeds | JMS 104 | 49.0 | 73.4 | 70.8 | 64.4 |
| LG Seeds | JMS 105 | 53.1 | 68.8 | 69.6 | 63.8 |
| Merschman | Barbie IV | 57.0 | 76.3 | 66.8 | 66.7 |
| Merschman | Bintee VI | 52.8 | 77.5 | 64.5 | 64.9 |
| Merschman | Genie VI | 64.9 | 73.7 | 70.0 | 69.5 |
| Merschman | Julie IV | 69.0 | 84.6 | 65.5 | 73.0 |
| Pioneer | Pio 2540 | 71.9 | 88.6 | 80.7 | 80.4 |
| Pioneer | Pio 25R26 | 74.4 | 99.2 | 84.6 | 86.1 |
| Pioneer | Pio 25R57 | 56.1 | 68.9 | 69.5 | 64.8 |
| Stine | Stine 470 | 56.0 | 74.8 | 68.5 | 66.4 |
| Stine | Stine 480 | 56.2 | 78.8 | 68.0 | 67.7 |
| Stine | Stine 481 | 54.9 | 70.5 | 70.9 | 65.4 |
| Terra Int. | SR 204 | 48.7 | 73.9 | 64.1 | 62.2 |
| Terra Int. | SR 205 | 59.5 | 72.9 | 77.9 | 70.1 |
| Terra Int. | SR 211 | 56.8 | 73.9 | 71.1 | 67.3 |
| Wilken Seed | Wilken 109 | 49.8 | 73.2 | 64.2 | 62.4 |
| Wilken Seed | Wilken 111 | 65.3 | 78.5 | 65.6 | 69.8 |
| Wilken Seed | Wilken 121 | 60.2 | 72.8 | 78.9 | 70.6 |
| Wilken Seed | Wilken 204 | 64.4 | 78.1 | 73.2 | 71.9 |
| Wilken Seed | Wilken 207 | 54.6 | 73.8 | 70.7 | 66.4 |
| Average | 55.7 | 72.9 | 67.4 | 65.3 | |
| LSD 0.10 | 8.0 | 7.2 | 7.4 | ||
| CV, % | 10.6 | 7.3 | 8.1 | ||
