Every year, the University of Wisconsin-Extension and the University of Wisconsin-Madison College of Agricultural and Life Sciences conduct a corn evaluation program in cooperation with the Wisconsin Crop Improvement Association. The purpose of this program is to provide unbiased performance comparisons of hybrid seed corn for both grain and silage available in Wisconsin.
In 2014, grain and silage performance trials were planted at 14 locations in four production zones: the southern, south central, north central, and northern zones. Both seed companies and university researchers submitted hybrids.
The 2014 planting season, like the 2013 season, was one of the longest ever recorded in Wisconsin. Frequent rains caused delays, with many growers in north eastern Wisconsin not planting until mid-June. Delayed planting at Coleman, Marshfield, Seymour, and Valders combined with a cool growing season delayed harvest producing grain that was higher in moisture and lower for test weight than average. Over the entire growing season, growing degree-day accumulation was below the 30-year normal in both northern and southern Wisconsin. During May and June precipitation was significantly above average throughout Wisconsin. Cold weather and snow occurred during early November affecting grain dry down at Coleman, Marshfield, and Seymour. Little insect or disease pressure was observed in the trials. Grain and silage yields were above normal compared to the 10-year average at early planted sites.
| Table of Contents | ||
| Introduction Companies entering hybrids Hybrid index Transgenic technologies Seed treatments Temperature and Precipitation Trial management Hybrid history | Text Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 24 | |
| Grain | ||
| Southern Zone Arlington, Janesville, Lancaster | Early Maturity Trial: 105 day or earlier Late Maturity Trial: later than 105 day | Table 7 Table 8 |
| South Central Zone Fond du Lac, Galesville, Hancock (irrigated) | Early Maturity Trial: 100 day or earlier Late Maturity Trial: later than 100 day | Table 9 Table 10 |
| North Central Zone Chippewa Falls, Marshfield, Seymour, Valders | Early Maturity Trial: 90 day or earlier Late Maturity Trial: later than 90 day | Table 11 Table 12 |
| Northern Zone Marshfield, Spooner (three sites), Coleman | Table 13 | |
| Silage | ||
| Southern Zone Arlington and Lancaster | Early Maturity Trial: 110 day or earlier Late Maturity Trial: later than 110 day | Table 14 Table 15 Figure 2 |
| South Central Zone Arlington and Galesville | Early Maturity Trial: 106 day or earlier Late Maturity Trial: later than 104 day | Table 16 Table 17 Figure 3 |
| North Central Zone Chippewa Falls, Marshfield, Valders | Early Maturity Trial: 99 day or earlier Late Maturity Trial: later than 99 day | Table 18 Table 19 Figure 4 |
| Northern Zone Marshfield, Spooner (two sites), Coleman | Table 20 Figure 5 | |
| Organic | ||
| South Central Zone Fond du Lac, Galesville, Hancock | Table 21 | |
| North Central Zone Chippewa Falls, Marshfield, Seymour, Valders | Table 22 | |
| Specialty - Dryland | ||
| Central Zone - Dryland Hancock Deficit Irrigation, Hancock Full Irrigation | Table 23 | |
OBTAINING DATA ELECTRONICALLY
This report is available in Microsoft Excel and Acrobat PDF formats at the Wisconsin Corn Agronomy website: http://corn.agronomy.wisc.edu.
The most current version of Wisconsin Corn Hybrid Performance Trials (A3653) is also available to download as a PDF or purchase as a printed booklet at the UW Extension Learning Store: http://learningstore.uwex.edu.
For more information on the Wisconsin Crop Improvement Association, visit: http://wcia.wisc.edu.
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This publication is available from your county UW-Extension office (yourcountyextensionoffice.org), from the University of Wisconsin–Madison Department of Agronomy, 1575 Linden Drive, Madison, WI 53706, phone: (608) 262-1390, or from Cooperative Extension Publishing. To order, call toll-free: 1-877-947-7827 (WIS-PUBS) or visit our website: learningstore.uwex.edu.