2002 Wisconsin Corn Hybrid Performance Trial Results

Transcription

1 A Wisconsin Corn Hybrid Performance Trial Results Grain and Silage Department of Agronomy College of Agricultural and Life Sciences University of Wisconsin Wisconsin Crop Improvement Association

2 December 2002 A WISCONSIN CORN HYBRID PERFORMANCE TRIALS GRAIN AND SILAGE Joe Lauer, Kent Kohn, and Pat Flannery The University of Wisconsin Extension-Madison and College of Agricultural and Life Sciences conduct a hybrid 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 available in Wisconsin. These trials evaluate corn hybrids for both grain and silage production performance. TESTING PROCEDURE 85 and earlier In 2002, grain and silage performance trials were planted at thirteen locations in four production zones. Both seed companies and university researchers submitted hybrids. Companies with hybrids included in the 2002 trials are listed in Table 1. At most locations trials were divided into early and late maturity trials, based on the hybrid Relative Maturities provided by the companies. The specific Relative Maturities separating early and late trials are listed below. Map: Wisconsin Relative Maturity Belts and test sites Grain Southern Zone Arlington, Janesville, Lancaster South Central Zone Fond du Lac, Galesville, Hancock (irrigated) North Central Zone Early Maturity Trial: 105-day or earlier Late Maturity Trial: later than 105-day Early Maturity Trial: 100-day or earlier Late Maturity Trial: later than 100-day Early Maturity Trial: 90-day or earlier Late Maturity Trial: later than 90-day Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Chippewa Falls, Marshfield, Seymour, Valders Northern Zone Spooner (three sites), White Lake Table 10 Silage Southern Zone Arlington and Lancaster South Central Zone Fond du Lac and Galesville North Central Zone Early Maturity Trial: 105-day or earlier Late Maturity Trial: later than 105-day Early Maturity Trial: 100-day or earlier Late Maturity Trial: later than 100-day Early Maturity Trial: 90-day or earlier Late Maturity Trial: later than 90-day Table 11 Table 12 Table 13 Table 14 Table 15 Table 16 Chippewa Falls, Marshfield, Valders Northern Zone Spooner (two sites), Rhinelander Table 17

3 CULTURAL PRACTICES The seedbed at each location was prepared by either conventional or conservation tillage methods. Fertilizer was applied as indicated by soil tests. Herbicides were applied for weed control and supplemented with cultivation when necessary. Corn rootworm insecticide was applied when the previous crop was corn. Information for each location is summarized in Table 3. PLANTING A corn planter with cone units was used at all locations. Two- or four-row plots were planted at all locations. Twenty-five foot long plots were over planted and hand thinned to achieve as near a uniform stand as possible. Each hybrid was grown in at least three separate plots (replicates) at each location to account for field variability. GROWING CONDITIONS FOR 2002 Seasonal precipitation and temperature at the trial sites are shown in Table 2. Both grain and silage yields were above normal in western Wisconsin. Both grain and silage yields were variable in eastern Wisconsin. Spring planting conditions were variable with warm, dry conditions during April followed by cool, wet conditions during early May resulting in an overall slow start for corn farmers. Cool, wet conditions during early June slowed corn development, but development was made up in early July with hot, dry conditions. Dry, hot weather during pollination lowered yields in eastern Wisconsin. Timely rains in western Wisconsin resulted in favorable pollination conditions. Growing degree unit accumulation was normal throughout the entire growing season. Corn silage harvest started slightly later than normal. A killing frost did not occur until mid-october. Excellent plant standability was observed in most trials. During the fall harvest season, yields were generally good to excellent, and moisture was low decreasing drying costs. Significant drought occurred at the Janesville and Valders locations, while cool, wet conditions during April and May affected corn yields at Seymour. HARVESTING Grain: Plots were harvested with a self-propelled corn combine. Lodged plants and/or broken stalks were counted, plot grain weights and moisture contents were measured and yields were calculated and adjusted to 15.5% moisture. Silage: Whole-plant (silage) plots were harvested using a tractor driven, three-point mounted onerow chopper. One row was analyzed for whole plant yield and quality. Kernel milk percent, plot weight, and moisture content were measured, and yields were adjusted to tons dry matter / acre. A sub-sample was collected and analyzed using near infra-red spectroscopy. PRESENTATION OF DATA Yield results for individual location trials and for multi-location averages are listed in Tables 4 through 18. Within each trial, hybrids are ranked by moisture, averaged over all 2002 trials conducted in that zone. Yield and moisture data for both 2001 and 2002 are provided if the hybrid was entered previously in the 2001 trials. A two-year average for yield is calculated using location data for replications. A hybrid index at the back of this report lists relative maturity ratings, specialty traits and locations tested for each hybrid. RELATIVE MATURITY Seed companies use different methods and standards to classify or rate the maturity of corn hybrids. To provide corn producers a standard maturity comparison for the hybrids evaluated, the average grain moisture of all hybrids rated by the Minnesota Relative Maturity rating system are shown in each table. Minnesota Relative Maturity ratings are rounded to 5-day increments. The Minnesota Relative Maturity rating system categorizes corn hybrids into relative maturity groups by comparing harvest grain moisture of a hybrid to the moisture of standard hybrids for each group (see Minnesota Relative Maturity Rating of Corn Hybrids, Agriculture Extension Service, University of Minnesota, Agronomy No. 27). In these Wisconsin results hybrids with lower moisture than a particular relative maturity average

4 are likely to be earlier than that relative maturity, while those with higher grain moisture are most likely later in relative maturity. In addition, the hybrid index lists company maturity ratings, Minnesota Relative Maturity ratings, and a Wisconsin Comparative Relative Maturity (CRM) rating. The Wisconsin CRM rating is grain moisture at harvest correlated with company maturity ratings. Each hybrid in a trial is rated and averaged over all trials in a zone. PERFORMANCE INDEX Three factors yield, moisture, and standability are of primary importance in evaluating and selecting corn hybrids. A performance index (P.I.), which combines these factors in one number, was calculated for multi-location averages for grain trials. This performance index evaluates yield, moisture, and lodged stalks at a 50 (yield): 35 (moisture): 15 (lodged stalks) ratio. The performance index was computed by converting the yield, dry matter, and upright stalk values of each hybrid to a percentage of the test average. Then the performance index for each hybrid that appears in the tables was calculated as follows: PI = [(Yield x 0.50) + (Dry matter x 0.35) + (Upright stalks x 0.15)] / 100 SILAGE QUALITY Corn silage quality was analyzed using near infrared spectroscopy equations derived from previous work of Drs. Jim Coors and Joe Lauer (UW- Madison). Plot samples were dried, ground and analyzed for crude protein (CP), acid detergent fiber (ADF), neutral detergent fiber (NDF), in vitro cell wall digestibility (NDFD), in vitro digestibility (IVD), and starch. Spectral groups and outliers were checked using wet chemistry analysis. MILK2000 silage performance indices, milk per ton and milk per acre, are calculated using an adaptation by Eric Schwab and Randy Shaver (UW-Madison Dairy Science Department) of the MILK95 model (Undersander, Howard and Shaver; Journal Production Agriculture 6: ). In Milk2000, the energy content of corn silage was estimated using a modification of a published summative energy equation (Weiss and co-workers, 1992; Animal Feed Science Technology 39:95-110). In the modified summative equation, CP, fat, NDF, starch, and sugar plus organic acid fractions were included along with their corresponding total-tract digestibility coefficients for estimating the energy content of corn silage. A regression equation developed from literature data was used to predict total tract starch digestibility from the samples whole-plant dry matter content. The samples lab measure of NDFD was used for the NDF digestibility coefficient. Digestibility coefficients used for the CP, fat, and sugar plus organic acid fractions were constants. Dry matter intake was estimated using the samples NDF and NDFD content assuming a 1350 lb. cow consuming a 30% NDF diet. Using National Research Council (NRC, 2000) energy requirements, the intake of energy from corn silage was converted to expected milk per ton. Because the cows maintenance energy requirements were partitioned against the total diet in MILK2000 rather than against only corn silage as was done in MILK95, there was a base increase in our new estimate of milk per ton which was of equal value across all samples that did not influence ranking. Milk per acre was calculated using milk per ton and dry matter yield per acre estimates. LEAST SIGNIFICANT DIFFERENCE Variations in yield and other characteristics occur because of variations in soil and other growing conditions that lower the precision of the results. Statistical analysis makes it possible to determine, with known probabilities of error, whether a difference is real or whether it might have occurred by chance. Use the appropriate LSD (least significant difference) value at the bottom of the tables to determine true differences. Least significant differences (LSD s) at the 10% level of probability are shown. Where the difference between two selected hybrids within a column is equal to or greater than the LSD value at the bottom of the column, you can be sure in nine out of ten chances that there is a real difference between the two hybrid averages. If the difference

5 is less than the LSD value, the difference may still be real, but the experiment has produced no evidence of real differences. Hybrids that were not significantly lower in performance than the highest hybrid in a particular test are indicated with an asterisk. HOW TO USE THESE RESULTS TO SELECT TOP-PERFORMING HYBRIDS The results can be used to provide producers with an independent, objective evaluation of performance of unfamiliar hybrids, promoted by seed company sales representatives, compared to competitive hybrids. Below are suggested steps to follow for selecting top-performing hybrids for next year using these trial results: 1. Use multi-location average data in shaded areas. Consider single location results with extreme caution. 2. Begin with trials in the zone(s) nearest you. 3. Compare hybrids with similar maturities within a trial. You will need to divide most trials into at least two and sometimes three groups with similar average harvest moisture within about 2% range in moisture. 4. Make a list of 5 to 10 hybrids with highest 2002 Performance Index within each maturity group within a trial. 5. Evaluate consistency of performance of the hybrids on your list over years and other zones. a) Scan 2001 results. Be wary of any hybrids on your list that had a 2001 Performance Index of 100 or lower. Choose two or three of the remaining hybrids that have relatively high Performance Indexes for both 2001 and b) Check to see if the hybrids you have chosen were entered in other zones. (For example, some hybrids entered in the Southern Zone Trials, Tables 4 and 5, are also entered in the South Central Zone Trials, Tables 6 and 7). c) Be wary of any hybrids with a Performance Index of 100 or lower for 2001 or 2002 in any other zones. 6. Repeat this procedure with about three maturity groups to select top-performing hybrids with a range in maturity, to spread weather risks and harvest time. 7. Observe relative performance of the hybrids you have chosen based on these trial results in several other reliable, unbiased trials and be wary of any with inconsistent performance. 8. You might consider including the hybrids you have chosen in your own test plot, primarily to evaluate the way hybrids stand after maturity, dry-down rate, grain quality, or ease of combine-shelling or picking. 9. Remember that you don t know what weather conditions (rainfall, temperature) will be like next year. Therefore, the most reliable way to choose hybrids with greatest chance to perform best next year on your farm is to consider performance in 2001 and 2002 over a wide range of locations and climatic conditions. You are taking a tremendous gamble if you make hybrid selection decisions based on 2002 yield comparisons in only one or two local test plots. OBTAINING DATA ELECTRONICALLY This report is also available on the internet at Hybrid performance for the last 10 years can be summarized using SELECT at the above internet address. This book can be downloaded over the internet in Microsoft Excel and Acrobat PDF formats

6 Table 1. Companies with hybrids included in 2002 trials Brand Company Address City State Zip Adler Adler Seeds 6085 W 550 N Sharpsville IN AgriGold AgriGold Hybrids R.R. 1 Box 203 St. Francisville IL Agripro Garst Seed Company 5366 Lee Lane Coon Valley WI Asgrow Monsanto Co Sycamore Road Dekalb IL Battleground Battleground Ind. LLC 2265 W 600 N West Lafayette IN Bio Gene Bio Gene Seeds 5491 Tri-County Hwy Sardinia OH Brown Brown Seed, Inc N th Street P.O. Box 7 Bay City WI Brunner Brunner Seed Farm W3850 U.S. Hwy 10 Durand WI Cargill Mycogen Seeds 9330 Zionsville Road Indianapolis IN Carhart's Blue Top Carhart's Blue Top Seed, Inc. N14743 County Road M Galesville WI Cornelius Cornelius Seed th Ave Bellevue IA Croplan Genetics Croplan Genetics 180 Lynne Trail Oregon WI Crows Crows Hybrids P.O. Box 157 Kentland IN Dahlco Dahlco Seeds th ST SW Cokato MN Dahlman Dahlman Seed Co. LLP th Street Dassell MN Dairyland Dairyland Seed P.O. Box 958 West Bend WI Dekalb Monsanto Co Sycamore Road Dekalb IL Dynagro UAP Great Lakes 221 W Lake Lansing Rd 102 East Lansing MI Elk Mound Seed Elk Mound Seed 308 Railroad Ave Elk Mound WI Foundation Foundation Direct Seeds th Ave N Onalaska WI Garst Garst Seed Company 5366 Lee Lane Coon Valley WI Geertson Geertson Seed Farms 1665 Burroughs Road Adrian OR Gold Country Gold Country Seed Hwy 15 N PO Box 604 Hutchinson MN Golden Harvest Golden Harvest th Ave. North Cordova IL Great Lakes Great Lakes Hybrids 9915 W M-21 PO Box 637 Ovid MI Growmark Growmark, Inc Towanda Ave Bloomington IL High Cycle Trelay Seeds Hwy 80 Livingston WI Hughes Hughes Hybrids 206 North Hughes Rd Woodstock IL Jeske Jeske Seed Farm W8598 Cty Rd S Hortonville WI Johnson Seeds Johnson Seeds Inc th Street Dassel MN Jung Jung Seed Genetics Inc. 341 South High Street Randolph WI Kaltenberg Kaltenberg Seeds 5506 State Hwy 19 Waunakee WI Kruger Kruger Seed Company th Street Box A Dike IA Kussmaul Kussmaul Seed Company 9020 HWY 18 Mt. Hope WI La Crosse Forage La Crosse Forage and Turf Seed 2541 Commerce Street La Crosse WI Lemke Lemke Seed Farms, Inc North Granville Mequon WI LG Seeds LG Seeds N th Street River Falls WI Mallard Mallard Seed Co, Inc. P.O. Box 637 Plainview MN Midwest Midwest Seed Genetics P.O. Box 518 Carroll IA Mycogen Mycogen Seeds 9330 Zionsville Road Indianapolis IN NK Brand Syngenta Seeds Inc. 320 Mohawk Trail DeForest WI North-Gro North-Gro Seeds, Inc. 613 Randolph Street Cuba City WI O'Brien O'Brien Farms Inc. 552 Glenway Road Brooklyn WI Ottilie Ottilie RO Seed 1462 Sanford Marshalltown IA Pilgrim Elk Mound Seed 308 Railroad Ave Elk Mound WI Pioneer Pioneer Hi-Bred Int'l 99 Navaho Ave Ste 101-A Mankato MN Ragt Semences Ragt Semences Site de Bourran, Ave. St. Pierra BP Rodez cedex 9 France Renk Renk Seed Company 6800 Wilburn Road Sun Prairie WI Spangler Spangler Seedtech, Inc. 803 West Racine Street Jefferson WI Stine Stine Seed Company 2225 Laredo Trail Adel IA Trelay Trelay Seeds Hwy 80 Livingston WI US Seeds United Suppliers, Inc. P.O. Box 538 Eldora IA Wyffels Wyffels Hybrids P.O. Box 246 Atkinson IL 61235

7 Table Temperature and Precipitation Summary May June July August September Temperature Average Departure Average Departure Average Departure Average Departure Average Departure Location Precipitation Total Departure Total Departure Total Departure Total Departure Total Departure Arlington Temperature Precipitation Chippewa Falls Temperature (Eau Claire) Precipitation Fond du Lac Temperature Precipitation Galesville Temperature (Tremp. Dam #6) Precipitation Hancock* Temperature Precipitation Irrigation Janesville Temperature (Beloit) Precipitation Lancaster Temperature Precipitation Marshfield Temperature Precipitation Seymour Temperature (Green Bay) Precipitation Spooner* Temperature Precipitation Irrigation Valders Temperature (Manitowoc) Precipitation White Lake Temperature (Antigo) Precipitation *Irrigation applied at Hancock and Spooner - Irrigated Sand Trials.

8 Table 3. Individual Trial Information Trials Soil Previous Row Plant- Harvest Ave. Final Tillage --Soil Test-- --Nitrogen Fertilizer-- Insect- Location Cooperators Type Crop Width ing Dates Stand Operations ph P K actual form time Weed Control icides (in) Date (plants/a) --(ppm)-- (lb/a) Arlington S.Kraak Plano Soybean Apr G:15-Oct G:24000 Chisel preplant Harness 2.5 pt/a None J. Quimby Silt Loam S: 14-Sept S:26000 Field Cultivator planting Hornet 3.0 oz/a cultivate Chippewa Falls J. Clark Sattre Soybean 30 3-May G: 16-Oct G: preplant Frontier 25 oz/a None Silt Loam S: 17-Sept S: Field Cultivator planting Hornet 3.0 oz/a cultivate Fond du Lac M. Rankin Virgil G: Soybean May G: 17-Oct G: Moldboard Plow preplant Accent Gold 2.9 oz/a G: None D. Boelk Silt Loam S: Corn S: 23-Sep S: Field Cultivator planting Atrazine 0.5 lb/a S: Force cultivate 4.4 lbs/a Galesville K. Congdon Downs Soybean 30 3-May G: 9-Oct G: V-ripper preplant Dual II 2.25 pt/a None J. Zander Silt Loam S: 13-Sep S: Field Cultivator planting Hornet 3.0 oz/a Clarity 4.0 oz/a cultivate Hancock J. Breuer Plainfield Soybean Apr G: 10-Oct G: Moldboard Plow planting Aatrex 4L 0.75 lb/a None Irrigated C. Kostichka Sand Disk post Lasso 2.0 qt/a Janesville B. Jaynes Plano Soybean Apr G: 11-Oct G: Chisel Plow preplant Dual II 1.8 pt/a None D. Nehring Silt Loam Field Cultivator planting Hornet 4.5 oz/a cultivate Lancaster T. Wood Fayette Soybean Apr G: 14-Oct G: Soil Finisher preplant Aatrex 4L 1.0 qt/a None Silt Loam S: 16-Sep S: planting Harness 1.0 qt/a Accent 0.33 oz/a Northstar 4.0 oz/a cultivate Marshfield M. Bertram Loyal G: Soybean May G: 30-Oct G: Chisel Plow planting Harness 1.0 qt/a None T. Drendel Silt Loam Field Cultivator (2x) post Hornet 2.4 oz/a 6776 gal/a Manure preplant cultivate S: Corn S: 2-Oct S: S: Chisel Plow planting Force Field Cultivator (2x) post 4.4 lbs/a 9342 gal/a Manure preplant Rhinelander B. Bowen Vilas Oats May S: 24-Sept S:31800 Field Cultivator (2x) planting Harness 1.75 qt/a S. Woodford Loamy Sand post Seymour R. Vanden Heuvel Clay Loam Corn May G: 23-Oct G: Chisel Plow planting Accent 0.33 oz/a Force Z. Miller Soil Finisher post Northstar 4.5 oz/a 4.4 lbs/a cultivate Spooner R. Rand Cress Alfalfa May G: 23-Oct G: Moldboard Plow planting Dual II Mag 1.0 pt/a None Dryland Y. Berger Sandy Loam Disk post Northstar 5.0 oz/a Spooner R. Rand Cress Corn 30 7-May G: 23-Oct G: Moldboard Plow planting Dual II Mag 1.0 pt/a None Irrigated Y. Berger Sandy Loam S: 18-Sep S: Disk (2x) post Northstar 5.0 oz/a Spooner R. Rand Miami Soybean May G: 24-Oct G: Moldboard Plow planting Dual II Mag 1.0 pt/a None Silt Loam Y. Berger Silt Loam S: 30-Sep S: Disk (2x) post Northstar 5.0 oz/a post Valders S. Hendrickson Kewaunee Corn May G: 17-Oct G: Moldboard Plow planting Surpass 1.0 pt/a Force J. Maney Clay Loam S: 24-Sep S: Field Cultivator 7500 gal/a Manure preplant Accent Gold 2.0 oz/a 4.4 lbs/a T.& B. Maney Banvel 2.0 oz/a cultivate White Lake J. Wahleithner Antigo Soybeans 30 2-May G: 23-Oct G: Disk planting Atrazine 1.0 lb/a None Silt Loam preplant Lasso 2.0 qt/a cultivate Note: G=Grain, S=Silage

9 Table 4. Southern Zone - Early Maturity Grain Trial (page 1 of 2) 105 DAY RELATIVE MATURITY OR EARLIER, BASED ON COMPANY RATING (ARLINGTON = ARL, JANESVILLE = JAN, LANCASTER = LAN) YEAR AVERAGE ARL JAN LAN AVERAGE ARL JAN LAN AVERAGE Yield P.I. Moist Test Lodged Yield Yield Yield Yield P.I. Yield Yield Yield Yield BRAND HYBRID bu/a # % Wt. % bu/a bu/a bu/a bu/a # bu/a bu/a bu/a bu/a Wyffels W * Wyffels W Carharts Blue Top CR102RB Dahlco X NK Brand N45A Dahlco X Renk RK645RRBt Renk RK655RR Jung * AgriPro Wyffels W * Renk RK Spangler * Midwest G7101B * Kruger K La Crosse Forage LC Golden Harvest EX Kruger K Ottilie Pioneer 36N Kruger K9002Bt * * DAY HYBRID TRIAL AVERAGE## 20.7 Dekalb DKC * 191 Great Lakes Brown * 203 * * Hughes Hughes Pioneer 35R * Growmark FS Hughes * Agrigold A * * 104 * 250 * Renk RK Kaltenberg K Dynagro DG5295Bt * 209 Dynagro 55N Cornelius C489RR * 190 Croplan Genetics Wyffels W Jung 6580Bt * Dairyland Stealth Growmark FS Kruger K9306Bt 208 * 104 * * 209 * 213 Wyffels W Golden Harvest H8223Bt * 236 * Pioneer 36R * 105 * * * Stine DAY HYBRID TRIAL AVERAGE## 22.0 Pioneer 36B Dairyland Stealth Kruger EX303ABt CONTINUED.

10 Table 4 (continued). Southern Zone - Early Maturity Grain Trial (page 2 of 2) 105 DAY RELATIVE MATURITY OR EARLIER, BASED ON COMPANY RATING (ARLINGTON = ARL, JANESVILLE = JAN, LANCASTER = LAN) YEAR AVERAGE ARL JAN LAN AVERAGE ARL JAN LAN AVERAGE Yield P.I. Moist Test Lodged Yield Yield Yield Yield P.I. Yield Yield Yield Yield BRAND HYBRID bu/a # % Wt. % bu/a bu/a bu/a bu/a # bu/a bu/a bu/a bu/a US Seeds USC * Croplan Genetics 516Bt Pioneer 35R * 105 * * 204 * 239 * 232 * 107 * 239 * 237 * 219 * 222 * Ottilie * Cornelius C * Agrigold A North-Gro Carharts Blue Top CX1056A Adler Renk RK700Bt 212 * 105 * * 242 * Dairyland Stealth * Trelay LG Seeds LG Wyffels W * 105 * * 202 * 232 Agrigold A * 215 * 200 Wyffels W Kruger K9304Bt Carharts Blue Top CX1020Bt Dekalb DKC * 106 * * 214 * 231 LG Seeds LG * 104 * * 206 * * 104 * 234 * 233 * * Asgrow RX601RRYG 224 * 108 * * 211 * 253 * 223 * 104 * 242 * 242 * * OBrien OB Kruger K Croplan Genetics 503Bt 207 * 104 * * * Stine 9505Bt * 178 Spangler 5003G 210 * 104 * * North-Gro 6406Y * 224 High Cycle HC Dynagro DG5324Bt 209 * 104 * * Dairyland Stealth * Dynagro DG * 203 * 212 MEAN LSD(0.10)** # P.I. = Performance Index, evaluates hybrids by combining yield, moisture, and lodged % at a 50(yield) : 35(moisture) : 15(lodged) ratio. ## Average grain moisture of all hybrids in this trial as rated by the Minnesota Relative Maturity Rating System. Ratings are rounded to 5-day increments. * Hybrids that performed statistically similar to the highest hybrid in the trial. Shaded results provide the best estimate of relative hybrid performance.

11 Table 5. Southern Zone - Late Maturity Grain Trial (page 1 of 2) 106 DAY RELATIVE MATURITY OR LATER, BASED ON COMPANY RATING (ARLINGTON = ARL, JANESVILLE = JAN, LANCASTER = LAN) YEAR AVERAGE ARL JAN LAN AVERAGE ARL JAN LAN AVERAGE Yield P.I. Moist Test Lodged Yield Yield Yield Yield P.I. Yield Yield Yield Yield BRAND HYBRID bu/a # % Wt. % bu/a bu/a bu/a bu/a # bu/a bu/a bu/a bu/a Hughes * 104 * * 231 Cornelius C509RR North-Gro Spangler Great Lakes Renk RK772Bt * Dekalb DKC * 106 * * 219 * 241 * * 236 * * Garst 8578IT Agrigold A Golden Harvest H8662Bt Dynagro DG * 190 North-Gro Hughes Great Lakes * 184 Bio Gene BG Great Lakes Kruger K9910Bt 218 * 104 * * 105-DAY HYBRID TRIAL AVERAGE## 23.2 La Crosse Forage LC US Seeds USC Brunner S6408Bt Bio Gene BG Agrigold A * 105 * * 236 * 208 Cornelius C588YG High Cycle 7638Bt * Pioneer 35Y * 104 * * 217 * * 106 * 232 * 237 * 222 * 224 * NK Brand N58D * * 240 * Cornelius C590YG 216 * 103 * * * Spangler Kruger K LG Seeds LG Kruger K9410Bt Hughes Cornelius C * * 212 * 216 Garst / Agripro 9476Bt 222 * 105 * * 207 * 242 * Carharts Blue Top CX1080A * Wyffels W * Dynagro DG * 104 * * 232 * * Crows C438B * * 236 * Agrigold A6333Bt 233 * 107 * * 255 * * * Brown 6895Bt * * 241 * Ottilie 4777Bt * * * 241 * 236 * Great Lakes * 208 * 209 Dairyland Stealth US Seeds USC Dairyland Stealth * 238 * 236 * Growmark FS * 210 * 216 US Seeds USC1072ND High Cycle 7743Bt * Dairyland Stealth 1507Bt * * 245 * 240 * CONTINUED.

12 Table 5 (continued). Southern Zone - Late Maturity Grain Trial (page 2 of 2) 106 DAY RELATIVE MATURITY OR LATER, BASED ON COMPANY RATING (ARLINGTON = ARL, JANESVILLE = JAN, LANCASTER = LAN) YEAR AVERAGE ARL JAN LAN AVERAGE ARL JAN LAN AVERAGE Yield P.I. Moist Test Lodged Yield Yield Yield Yield P.I. Yield Yield Yield Yield BRAND HYBRID bu/a # % Wt. % bu/a bu/a bu/a bu/a # bu/a bu/a bu/a bu/a Wyffels W * Kruger K9309Bt * * 217 * 211 Carharts Blue Top CX1078Bt LG Seeds LG * Growmark FS DAY HYBRID TRIAL AVERAGE## 24.3 Kussmaul K * 104 * * 253 * Midwest G * * Wyffels W * Dynagro 57K * 223 Kruger K9310ABt * Dairyland Stealth * * 104 * 234 * * 219 Bio Gene BG Pioneer 34H * 202 Pioneer 34M * 103 * * 246 * NK Brand N65M * 215 * 214 North-Gro * Brown * 244 * North-Gro * 239 * 243 * NK Brand N65Y3 220 * 104 * * 213 * 232 Ottilie * 195 Pioneer 34N * 105 * * 213 * 246 * Crows C * * 212 Geertson GS Dekalb DKC OBrien OB Kaltenberg K Ottilie 5267Bt 216 * * * 227 * 238 * Asgrow RX708YG * Kussmaul K * Dekalb DKC * 108 * * 243 * 241 * Jung * 212 Wyffels W * 104 * * 205 * 240 * Spangler 7558G 217 * * * Jung 6710Bt 222 * 104 * * 219 * 230 Renk RK NK Brand N60B * 227 Trelay Stine Cornelius C644RR Wyffels W Pioneer 33A * 105 * * 211 * 257 * 242 * 106 * 242 * 251 * 234 * 236 * MEAN LSD(0.10)** # P.I. = Performance Index, evaluates hybrids by combining yield, moisture, and lodged % at a 50(yield) : 35(moisture) : 15(lodged) ratio. ## Average grain moisture of all hybrids in this trial as rated by the Minnesota Relative Maturity Rating System. Ratings are rounded to 5-day increments. * Hybrids that performed statistically similar to the highest hybrid in the trial. Shaded results provide the best estimate of relative hybrid performance.

13 Table 6. South Central Zone - Early Maturity Grain Trial (page 1 of 2) 100 DAY RELATIVE MATURITY OR EARLIER, BASED ON COMPANY RATING (FOND DU LAC = FON, GALESVILLE = GAL, HANCOCK = HAN) YEAR AVERAGE FON GAL HAN AVERAGE FON GAL HAN AVERAGE Yield P.I. Moist Test Lodged Yield Yield Yield Yield P.I. Yield Yield Yield Yield BRAND HYBRID bu/a # % Wt. % bu/a bu/a bu/a bu/a # bu/a bu/a bu/a bu/a Hughes Pilgrim Seed OBrien OB913RRBt Kussmaul K Dekalb DKC Brown US Seeds USC Dairyland Stealth AgriPro Dekalb DKC La Crosse Forage LC Carharts Blue Top CX1956A US Seeds USC LG Seeds LG2463Bt * Brown * 209 LG Seeds LG DAY HYBRID TRIAL AVERAGE## 21.9 Agrigold A * Geertson GS Johnson Seeds Dairyland DST10067Bt North-Gro * Dekalb DKC Jung 6455Bt * 105 * 177 * Dynagro 54K Dairyland Stealth * Dekalb DKC Dynagro DG5240RR Ragt Semences PG * Golden Harvest EX17140Bt Lemke 5021RRBt NK Brand N43M LG Seeds LG Renk RK * NK Brand N43C Brown 5941RR Jung Spangler Midwest G7101B 244 * 109 * * 251 * 265 * 222 * 108 * 187 * 221 * 259 * 233 * Renk RK * * Agrigold XA Carharts Blue Top CR102RB Kussmaul K Hughes * 106 * * 233 * 249 * Growmark FS4042Bt 236 * 107 * * 242 * 255 * CONTINUED.

14 Table 6 (continued). South Central Zone - Early Maturity Grain Trial (page 2 of 2) 100 DAY RELATIVE MATURITY OR EARLIER, BASED ON COMPANY RATING (FOND DU LAC = FON, GALESVILLE = GAL, HANCOCK = HAN) AVERAGE FON GAL HAN AVERAGE FON GAL HAN 2 YEAR AVERAGE Yield P.I. Moist Test Lodged Yield Yield Yield Yield P.I. Yield Yield Yield Yield BRAND HYBRID bu/a # % Wt. % bu/a bu/a bu/a bu/a # bu/a bu/a bu/a bu/a High Cycle 7525Bt 237 * 107 * * 242 * 249 * Pioneer DAY HYBRID TRIAL AVERAGE## 23.4 Kaltenberg K5151Bt 240 * 108 * * 249 * 247 * 218 * 107 * * 257 * 229 * Crows C217B 241 * 108 * * 246 * 258 * 211 * 105 * 178 * 227 * * Dairyland Stealth * Jung 2488A Kaltenberg K * Trelay Agrigold XA Great Lakes Dairyland Stealth * 225 Renk RK Trelay LG Seeds LG Dekalb DKC * Pioneer 37H * Dynagro DG5295Bt * North-Gro Spangler La Crosse Forage LC Lemke High Cycle 7510Bt * 240 * 212 Dairyland Stealth * High Cycle 7601Bt 231 * 105 * * 233 * 231 OBrien OB1013Bt MEAN LSD(0.10)** # P.I. = Performance Index, evaluates hybrids by combining yield, moisture, and lodged % at a 50(yield) : 35(moisture) : 15(lodged) ratio. ## Average grain moisture of all hybrids in this trial as rated by the Minnesota Relative Maturity Rating System. Ratings are rounded to 5-day increments. * Hybrids that performed statistically similar to the highest hybrid in the trial. Shaded results provide the best estimate of relative hybrid performance.

15 Table 7. South Central Zone - Late Maturity Grain Trial (page 1 of 2) 101 DAY RELATIVE MATURITY OR LATER, BASED ON COMPANY RATING (FOND DU LAC = FON, GALESVILLE = GAL, HANCOCK = HAN) AVERAGE FON GAL HAN AVERAGE FON GAL HAN 2 YEAR AVERAGE Yield P.I. Moist Test Lodged Yield Yield Yield Yield P.I. Yield Yield Yield Yield BRAND HYBRID bu/a # % Wt. % bu/a bu/a bu/a bu/a # bu/a bu/a bu/a bu/a La Crosse Forage LC NK Brand N45T * NK Brand N45A6 235 * 107 * * 272 * * 180 * Dahlco X Renk RK645RRBt Dahlman D5102Bt 238 * 108 * * 262 * 205 * 105 * 177 * 227 * * Dahlco X1021Bt 238 * 108 * * 260 * Pioneer 36N Pioneer 36R * 108 * * 272 * 206 * 105 * 177 * 228 * * Cargill 4521Bt 238 * 108 * * 264 * 211 * 106 * 183 * 228 * * Renk RK655RR AgriPro Dekalb DKC * 100-DAY HYBRID TRIAL AVERAGE## 23.9 Dahlco Johnson Seeds 2275Bt Jung Mallard UC OBrien OB Agrigold XA Spangler * 105 * 175 * 221 * 231 * 207 Renk RK * * Bio Gene BG Golden Harvest H7995Bt * 232 Dahlco Johnson Seeds Agrigold XA5014Bt Growmark FS Jung Pioneer 36B Jung 6580Bt * Pioneer 35R Great Lakes 22Z * 105 * * 261 * Dairyland Stealth * * * Johnson Seeds NK Brand N51Z7 229 * 105 * * 244 Dekalb DKC * 105 * * 247 Pioneer 35R * * Stine 9505Bt Garst * 104 * * * 104 * * DAY HYBRID TRIAL AVERAGE## 25.9 North-Gro Crows C3520B * * 175 * 231 * Midwest G7494B 233 * 105 * * 255 * * 222 * Lemke CONTINUED.

16 Table 7 (continued). South Central Zone - Late Maturity Grain Trial (page 2 of 2) 101 DAY RELATIVE MATURITY OR LATER, BASED ON COMPANY RATING (FOND DU LAC = FON, GALESVILLE = GAL, HANCOCK = HAN) YEAR AVERAGE FON GAL HAN AVERAGE FON GAL HAN AVERAGE Yield P.I. Moist Test Lodged Yield Yield Yield Yield P.I. Yield Yield Yield Yield BRAND HYBRID bu/a # % Wt. % bu/a bu/a bu/a bu/a # bu/a bu/a bu/a bu/a Pioneer 35Y * 107 * * * 218 * 106 * 188 * 233 * 232 * 229 * Renk RK700Bt Carharts Blue Top CX1056A Dynagro 55N Growmark FS US Seeds USC1052RR * 103 * * 238 * 208 Spangler 5003G 227 * 104 * * Agrigold A * Brunner S Johnson Seeds Asgrow RX601RRYG 231 * 104 * * 249 Golden Harvest H OBrien OB Dynagro 55K Trelay Kaltenberg K Mallard UC Brown North-Gro Brunner S Carharts Blue Top CX1078Bt Elk Mound Seed EMS Dekalb DKC * 104 * * 249 Carharts Blue Top CX1080A * Carharts Blue Top CX1020Bt * 243 Foundation Direct X * 217 Dynagro DG Brunner EXP102RRBt North-Gro 6406Y Dairyland Stealth 1507Bt 232 * 104 * * * 234 * 218 * Dairyland Stealth * 211 Lemke 6068Bt 241 * 105 * * 242 * 262 * MEAN LSD(0.10)** # P.I. = Performance Index, evaluates hybrids by combining yield, moisture, and lodged % at a 50(yield) : 35(moisture) : 15(lodged) ratio. ## Average grain moisture of all hybrids in this trial as rated by the Minnesota Relative Maturity Rating System. Ratings are rounded to 5-day increments. * Hybrids that performed statistically similar to the highest hybrid in the trial. Shaded results provide the best estimate of relative hybrid performance.

17 Table 8. North Central Zone - Early Maturity Grain Trial (page 1 of 2) 90 DAY RELATIVE MATURITY OR EARLIER, BASED ON COMPANY RATING (CHIPPEWA FALLS = CHP, MARSHFIELD = MAR, SEYMOUR = SEY, VALDERS = VAL) 2002 AVERAGE CHP MAR SEY VAL AVERAGE CHP MAR SEY VAL Yield P.I. Moist Test Lodged Yield Yield Yield Yield Yield P.I. Yield Yield Yield Yield Yield BRAND HYBRID bu/a # % Wt. % bu/a bu/a bu/a bu/a bu/a # bu/a bu/a bu/a bu/a bu/a Spangler Dahlco Dairyland Stealth Dekalb DKC Spangler YEAR AVERAGE Spangler Dahlco 2288Bt * * Dahlman D * North-Gro Renk RK * Mycogen * * La Crosse Forage LC Brunner B * 104 * 157 * Johnson Seeds Gold Country X62083Bt Dekalb DKC Mycogen North-Gro Carharts Blue Top CR840RB * 214 * Jung 6205RRBt * 195 * 115 Johnson Seeds Brown DAY HYBRID TRIAL AVERAGE## 24.2 Elk Mound Seed EMS Trelay * Carharts Blue Top CX8500A * 163 * Kussmaul K Dekalb DKC * * 204 * 165 * 150 * 108 * 161 * 187 * 171 * * Dahlman R Dahlco Carharts Blue Top CX820Bt Ragt Semences PG * Lemke 2041Bt * Johnson Seeds Brown 2835RR Gold Country X Carharts Blue Top CX290A * 154 * Growmark FS Dynagro CX Mallard UC Kussmaul K Jung 6210RRBt * Croplan Genetics * 191 * 173 * Carharts Blue Top CR8500RB * LG Seeds LG CONTINUED.

18 Table 8 (continued). North Central Zone - Early Maturity Grain Trial (page 2 of 2) 90 DAY RELATIVE MATURITY OR EARLIER, BASED ON COMPANY RATING (CHIPPEWA FALLS = CHP, MARSHFIELD = MAR, SEYMOUR = SEY, VALDERS = VAL) AVERAGE CHP MAR SEY VAL AVERAGE CHP MAR SEY VAL 2 YEAR AVERAGE Yield P.I. Moist Test Lodged Yield Yield Yield Yield Yield P.I. Yield Yield Yield Yield Yield BRAND HYBRID bu/a # % Wt. % bu/a bu/a bu/a bu/a bu/a # bu/a bu/a bu/a bu/a bu/a Dynagro DG * High Cycle 7495RRBt * * Gold Country 8521RRBt * Brunner S Renk RK232Bt Dairyland Stealth 1089Bt Dahlman D * 113 * * 223 * 210 * 176 * Dahlman DAY HYBRID TRIAL AVERAGE## 25.7 Johnson Seeds * Dairyland Stealth Brunner S2852RRBt * Lemke Renk RK * Kaltenberg K3535Bt High Cycle 7290Bt * * 106 * 162 * * Johnson Seeds Dahlman D4501Bt * * Ragt Semences RH * North-Gro 3741YRR Spangler 2777RG Golden Harvest H * Pilgrim Seed * 112 * * 220 * 213 * 172 * Dahlco 2335Bt * 113 Dahlco X Dahlco 2075Bt * 141 Brown Kaltenberg K * MEAN LSD(0.10)** NS 9 # P.I. = Performance Index, evaluates hybrids by combining yield, moisture, and lodged % at a 50(yield) : 35(moisture) : 15(lodged) ratio. ## Average grain moisture of all hybrids in this trial as rated by the Minnesota Relative Maturity Rating System. Ratings are rounded to 5-day increments. * Hybrids that performed statistically similar to the highest hybrid in the trial. Shaded results provide the best estimate of relative hybrid performance.