Celebrating 96 years of helping Iowa farmers. CORN. Department of Agronomy. A summary of replicated research by Iowa Crop Improvement Association

Transcription

1 Celebrating 96 years of helping Iowa farmers. CORN Department of Agronomy A summary of replicated research by Iowa Crop Improvement Association

2 Iowa Crop Improvement Association Iowa Crop Performance Tests Corn is conducted each year to provide information farmers need to select the best hybrids for their production conditions. This is the 96th consecutive year for the test. trial information, testing procedures, and more can be found at Testing Procedures Seed companies, Iowa Crop Improvement Association, and Iowa State University are eligible to enter hybrids in the Iowa Crop Performance Tests Corn. There are three testing districts and five testing sites within each district (Figure 1). Entries were subdivided into experiments based on relative maturity, providing an early-season and full-season test within each district. Each entry was replicated four times in four-row plots at a planting rate of 35,000 kernels per acre at each location. Row spacing was 30 inches, plot length was 20 feet, and planted row length was 17.4 feet. The center two rows of each plot were harvested with a corn combine. No gleanings or dropped ears were included in yield data. A moisture determination was made from each plot and yields were corrected to 15.5 percent moisture for shelled corn. determinations are based on a 20 foot plot, which includes the planted row plus the alley. This is because area in alleys may contribute to the yield of plants at the ends of planted rows. 2 How Information is Presented Tables 3-5 contain two-year averages of agronomic information from a maximum of five locations each year. Current year district averages are shown in Tables 6-11, and entries are reported in either the early-season or full-season hybrid tests within each district. These tables contain a mean yield, moisture, and adjusted gross value based on all locations within the district. In addition, there are yield estimates based on the western fields and the eastern fields within a district. In these estimates, the location in the center of the district is used in both subcomponents. Each of these tables also contains the single-location yield for each entry. Lodging and other additional information from the individual locations is available at Interpretation of Results Least Squares Means All trait means in all tables were computed using least squares means. In cases where some values are missing, this provides the best estimates of trait values across replications, locations, and years. Least squares means are not equivalent to simple arithmetic means like those computed in a spreadsheet program using raw data or location means. Least squares means should always be used in multiple-comparison tests like the Iowa Crop Performance Tests.

3 Interpretation of Results Statistical analysis identifies the portion of yield differences due to variation in soil types, soil fertility, moisture availability, insect infestation, and diseases; plus any variation due to planting and harvesting techniques. The least significant difference (LSD) values for yield represent, in bushels per acre, the amount of yield variation that could be due to variations in the factors just mentioned. In comparing hybrids, yield differences greater than the LSD value can be attributed to differences in the yield potential of these hybrids; yield differences less than the LSD value are not statistically different and could have been due to other factors. Grain moistures are indications of maturity and natural drying rate. comparisons should be made among hybrids of similar maturity. Growing conditions vary at each location. Stressful conditions, such as drought, extended periods of high temperature, or excess rainfall may affect some locations more than others. It is important to select hybrids having stable performance over a range of environmental conditions because it is not certain how next year s growing season will develop. High yields for two or more consecutive years indicate stable performance. If two-year means are not available, regional averages consisting of several locations should be used to make selection decisions. Performance data from a single location have a very low predictive probability and should not be relied upon for hybrid selection decisions. Supplemental yield and agronomic information about specific hybrids may be obtained from seed dealers, crop consultants, and from neighbors who have grown these hybrids. Use of Data in Advertisements Specific advertising statements by a company about the performance of its entries must accurately reflect the published data. 3

4 Acknowledgements 2015 by the Iowa Crop Improvement Association. Used with permission. The presentation of data for the hybrids tested does not imply endorsement by the authors or the agencies conducting the test. Iowa Crop Improvement Association offers unbiased, third-party information to Iowa growers on the adaptation and performance of corn hybrids and soybean varieties. The latest results are available at Iowa State University does not discriminate on the basis of race, color, age, religion, national origin, sexual orientation, gender identity, genetic information, sex, marital status, disability, or status as a U.S. veteran. Inquiries can be directed to the Director of Equal Opportunity and Compliance, 3280 Beardshear Hall, (515) PM 660 Revised November This report would not be possible without the cooperative efforts of many organizations and people. Thanks to the following for helping make this testing program a success: Chad Arnold, Bill Fjelland, and Ryan Frasch for tireless work and brilliant ideas throughout the year; Gene Kassmeyer of NuTech, and George Kadrmas of Monsanto for providing seed for fill plots and border rows; all of our cooperators, for without their help, our lives would be more difficult they are listed in Table 1; Josh Davis, David Loupee, and Kenny Arnold, who put in long hours of hard work for very low pay; Jode Edwards, for statistical support; and a small army of great students for assisting with our seed counting and experiment layouts their efforts contributed greatly to the success of our mission. A special thanks to all of the companies who enter hybrids in our test. They are listed at the end of this report in Table 12. It is their participation and support that continues to make these tests an invaluable resource for growers. For More Information For more information about the Iowa Crop Performance Tests, see For information about Iowa Crop Improvement Association, visit For questions or comments contact: Jim Rouse Executive Director Iowa Crop Improvement Association 4611 Mortensen Rd, Suite Ames, IA croptesting@iastate.edu

5 General Information Figure 1. Test locations for the 2015 Iowa Crop Performance Test Corn Table 1. General information for the 2015 corn test Table 2. GMO, seed treatment, and other data descriptions Two-Year Means Table 3. District Table 4. District Table 5. District District and Single-Location Means Table 6. Table 7. Table 8. Table 9. Table 10. Table District, -season test District, -season test District, -season test District, -season test District, -season test District, -season test Participants Table 12. Origin and descriptive information for 2015 entries 16 Figure 1. Test locations for the 2015 Iowa Crop Performance Tests Corn Corwith Sheldon Nashua Pocahontas Glidden Ames Maynard Keystone Clarence Missouri Valley Milo Malvern Corning Crawfordsville Batavia 5

6 Table 1. General information for the 2015 corn test. Planting Harvest Location and Cooperator Soil Type Date Date Avg Sheldon, Daryl Roos Galva / Primghar silty clay loam 28-Apr 13-Oct Pocahontas, John Schott Webster clay loam-nicollett clay loam 29-Apr 14-Oct Corwith, Norm & Jonathan Chambers Webster clay loam 27-Apr 12-Oct Nashua, Ken Pecinovsky Kenyon loam 30-Apr 9-Oct Maynard, Alan Albrecht Kenyon loam 1-May 6-Oct Missouri Valley, Dean McIntosh Kennebec silt loam 28-Apr 22-Oct Glidden, David Theilen Nicollett loam-clarion loam 30-Apr N/A N/A Ames, Mark Honeyman Webster clay loam-clarion loam 2-May 10-Oct Keystone, Dennis & Steve Pohlman Tama silty clay loam 1-May 3-Oct * Clarence, Dave Elijah Muscatine silty clay loam 1-May 5-Oct 2 Malvern, Robert Hays Bremer silty clay loam 30-Apr 16-Oct Corning, David er Macksburg silty clay loam 30-Apr 17-Oct Milo, Craig Hill Macksburg silty clay loam 6-May 5-Oct Batavia, Allen McElderry Haig silt loam 4-May 14-Oct Crawfordsville, Myron Rees Taintor / Mahaska silty clay loam 4-May 29-Sep * Indicates corn-following-corn field Table 2. GMO, seed treatment, and other data descriptions. GMO Trait Package T ARTSN CB DG H1 OT RW V3 V3 YGVT2 RIB Optimum AcreMax Optimum AcreMax tra Optimum AcreMax treme Agrisure Artesian Agrisure CornBorer Genuity DroughtGard Agrisure 3000 Herculex Herculex TRA Optimum Intrasect Optimum TRIsect Agrisure Rootworm SmartStax Viptera 3 Viptera 3 Gard VT Double PRO Gard VT Triple PRO Gard VT Double Refuge-in-bag : Herbicide Technology LL Agrisure Glyphosate Tolerant Liberty Link Roundup Ready : Insecticide Seed Treatment ESC P500 PPST Acceleron 500/Poncho/VOTiVO Acceleron Acceleron mg ai / seed Cruiser Extreme Pak Escalate Maxim L + Quattro Poncho Poncho 500 VOTiVO Premium Seed Treatment : Relative maturity in days, provided by entrant : bushels per acre, standardized at 15.5% moisture Moist: harvest moisture, expressed as percent AGV: Adjusted Gross Value, based on a price per bushel of $3.50 and drying costs of 6 cents per point This year we evaluated over 260 hybrids, from 26 brand names, in more than 380 district-by-hybrid combinations. Entries were distributed in three districts and two experiments per district. Each experiment was grown at five locations, with four replicates of each entry at each location. 6

7 Table 3. district 2-year means, early-season hybrids, Brand Name Masters Choice Masters Choice 6STRIB TP STRIB DKC49-72RIB DKC52-84RIB 6318STRIB MCT RK666SST T51-01R 1663 C374 E TP SS TP A V N E0 5F-198 MC Trait Pkg -RIB -RIB -RIB -RIB -RIB -RIB ARTSN -RIB -RIB Herb Tech LL, LL, LL, LL, LL,, LL LL, LL, Experiment Mean LSD(0.25) full-season hybrids, > Brand Name Masters Choice Roeschley Beck Masters Choice Experiment Mean LSD(0.25) 5F N 5H-806 6D40 C457SS C576SS 2A627 2M04-2P E1705RR 5Z-308 DKC54-38RIB TP N C574SS M05-68G C594 MCT 5661 R215 5Z STRIB RK776SST RK712SST 6508STRIB P0636 2M07-SS RK791SST C533SS 5939T C490 TP SS 6878STRIB 2T619 RK752SST 5852D N TP SS RK699SST MCT 527 Trait Pkg H1 -RIB -RIB -RIB -RIB -RIB -RIB -RIB -RIB -RIB -RIB -RIB T-RIB -RIB -RIB -RIB -RIB V3 -RIB -RIB V3 Herb Tech LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL,, LL LL, LL, Moist % NW NE Moist % NW NE AGV $ AGV $

8 Table 4. district 2-year means, early season hybrids, Brand Name Roeschley Beck R215 5Z-906 5Z C457SS 5918STRIB C574SS C576SS 5852D2 E1705RR 6D T 5H-806 RK776SST 2A627 P STRIB 5879 RK791SST RK752SST 2M07-SS F-707 RK712SST TP C533SS TP SS 6508STRIB TP SS RK699SST Trait Pkg -RIB V3 -RIB T-RIB H1 -RIB -RIB -RIB -RIB -RIB -RIB -RIB -RIB -RIB -RIB -RIB -RIB Herb Tech LL, LL, LL, LL, LL,, LL LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, Experiment Mean LSD(0.25) full-season hybrids, > Brand Name Experiment Mean LSD(0.25) 8 M14-28BRG 5F TP A STRIB 6W80 RK935SST 5F STRIB P RK941SST 31 DKC62-77RIB 5F-510 DKC61-79RIB 6W C744SS 7198STRIB 2C F- M67-85BR M S68 P1151 C621SS RK860 RK834SST DKC60-67RIB 2V Trait Pkg -RIB CBRW -RIB DG-RIB -RIB -RIB -RIB -RIB -RIB -RIB DG-RIB -RIB -RIB -RIB CBRW -RIB -RIB -RIB -RIB -RIB -RIB Herb Tech, LL LL, LL, LL, LL, LL, LL, LL,, LL LL, LL,, LL LL, LL, LL, LL, LL, LL LL, LL, LL, LL, LL, Moist % CW CE Moist % CW B/A CE AGV $ AGV $

9 Table 5. district 2-year means, early-season hybrids, Brand Name 7268STRIB C733SS 5F-510 RK834SST DKC61-79RIB P1248 C621SS M66-23BRG DKC62-77RIB 2V709 6S STRIB M-1409F-17 5F-709 6W80 5F C728 RK M-1408F-17 M-1407D T M-909C-17 P1151 C594 M-1508P-12 Trait Pkg -RIB -RIB -RIB -RIB -RIB -RIB -RIB -RIB DG-RIB -RIB -RIB T-RIB -RIB Herb Tech LL, LL, LL, LL, LL, LL,, LL LL, LL, LL, LL, LL, LL,, LL LL, LL, LL, LL, LL, LL, Experiment Mean LSD(0.25) full-season hybrids, > Brand Name Phoenix Experiment Mean LSD(0.25) TP STRIB 3131 M15-14BRG DKC64-89RIB C744SS RK935SST M-1311R-17 2C799 M-1314D-14 RK941SST C788 5F-515 M-1413M-17 2M14-SS M-1412M A4 P1498 5F- 6W82 M-1211K Trait Pkg -RIB -RIB -RIB -RIB -RIB -RIB -RIB -RIB V3 -RIB DG-RIB Herb Tech LL,, LL LL, LL, LL, LL, LL, LL, LL,, LL LL, LL, Moist % SW SE Moist % SW SE AGV $ AGV $

10 Table 6. district, 2015 district and single-location means. -season test,. Brand Name Jacobsen Masters Choice NuTech Beck NuTech Masters Choice Experiment Mean Minimum Mean Maximum Mean LSD(0.25) Coefficient of Variability 10 Trait Pkg P0157 -RIB 2G584 DKC53-68RIB -RIB 5283STRIB -RIB 5Z-0305 TP P -RIB 6STRIB -RIB DKC49-72RIB -RIB D71-01RL -RIB A16 SS -RIB DKC52-84RIB -RIB TP RK612SST TP P -RIB JS 7279 VT2 PRO RIB -RIB RK680SST M RIB C338DGDP DG RK666SST -RIB 5R-502 OT D83-03RL -RIB 1663 MCT STRIB -RIB P0297T T-RIB 5K-0208 T 53A15 SS 5898STRIB -RIB 3074 E1003 E1310 RK633SST -RIB C374 0A-0 C380SS DKC50-82RIB DG-RIB TP SS -RIB RK629 -RIB T51-01R ARTSN 52A14 VT2 YGVT N N A3 C290 5F-002 E1302SS 50A15 VT2 PRO 2V489 -RIB TP A 5N E0 E F-198 MC 5250 D37-98RL -RIB Herb Tech LL,, LL LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL,, LL, LL LL, LL, LL,, LL, LL LL, LL, District Means NW NE Moist % Single Location AGV $ Sheldon Pocahontas Corwith Nashua Maynard

11 Table 7. district, 2015 district and single-location means. -season test, >. Brand Name Jacobsen Masters Choice Roeschley Beck Masters Choice Experiment Mean Minimum Mean Maximum Mean LSD(0.25) Coefficient of Variability DKC58-06RIB 59A16 SS P0937 RK810SST F-709 TP SS 49-09N 5819 C457SS 6S29 56A13 VT2 PRO P0993HR JS 9306 SS RIB 5Z-504 5H-806 TP M05-68G 6968STRIB 2A627 6D40 2M04-2P MCT N 5944ST 6508STRIB Z-308 E1803 DKC54-38RIB 5665 C576SS 5Z R215 D52-05RL C594 57A16 SS DKC55-20RIB 5755STRIB E1705RR C574SS SS43 DKC55-93RIB RK712SST RK791SST M07-SS P A13 SS 5939T RK776SST 6878STRIB E5712 E D2 C533SS RK752SST 2T619 TP SS TP SS TP A13 SS 30-06N 5879 C N E1610 2Y669 MCT 527 RK699SST Trait Pkg -RIB -RIB -RIB -RIB H1 -RIB H1 -RIB -RIB -RIB -RIB -RIB -RIB -RIB -RIB -RIB -RIB -RIB -RIB -RIB -RIB -RIB T-RIB -RIB -RIB -RIB V3 -RIB -RIB -RIB -RIB V3 -RIB V3 -RIB Herb Tech LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL,, LL LL, LL, LL, LL, LL, LL, LL, LL,, LL LL, LL, LL, LL, LL, District Means NW NE Moist % AGV $ Single Location Sheldon Pocahontas Corwith Nashua Maynard

12 Table 8. district, 2015 district and single-location means. -season test,. Experiment Mean Minimum Mean Maximum Mean LSD(0.25) Coefficient of Variability 12 R215 5Z-906 P0993HR 5Z A16 SS P0937 DKC58-06RIB C457SS E STRIB SS RK810SST 59A16 SS 5654 C576SS TP SS 56A13 VT2 PRO 5H-806 6S ST M D2 RK752SST 2A627 M07-25BR RK776SST 5Z-504 P F T E1705RR TP TP A13 SS DKC55-93RIB E1610 C574SS 6D40 RK791SST JS 9468 SS RIB 2M07-SS Y669 1 RK712SST M06-27BR 6878STRIB C533SS DKC55-20RIB M06-94BRGV E TP SS 6968STRIB M M08-2P 6508STRIB 57A13 SS TP SS RK699SST Herb Tech LL, LL, LL, LL, LL, LL, LL,, LL LL, LL, LL, LL,, LL LL, LL, LL LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, LL LL, LL, LL,, LL LL, LL, LL, LL, LL, District Means CW CE Moist % Single Location AGV $ Missouri Valley Glidden This test was discarded. Brand Name Roeschley Beck Jacobsen Trait Pkg H1 -RIB -RIB -RIB -RIB -RIB H1 -RIB V3 -RIB -RIB CBRW -RIB -RIB T-RIB V3 -RIB -RIB -RIB -RIB -RIB -RIB -RIB CBRW -RIB -RIB V3 -RIB -RIB -RIB -RIB -RIB -RIB -RIB Ames Keystone Clarence

13 Table 9. district, 2015 district and single-location means. -season test, >. Experiment Mean Minimum Mean Maximum Mean LSD(0.25) Coefficient of Variability Herb Tech LL, LL, LL, LL, LL,, LL, LL, LL LL, LL, LL, LL, LL,, LL LL, LL, LL, LL, LL, LL,, LL LL, LL LL, LL, LL, LL,, LL LL, LL, LL, LL, LL, District Means CW CE Moist % AGV $ Missouri Valley Single Location Glidden This test was discarded. Brand Name NuTech Jacobsen Roeschley Phoenix NuTech Jacobsen Trait Pkg 5F STRIB -RIB RK941SST -RIB 7068ST -RIB 5F-814 M14-28BRG 33 81A10 CBRW TP N-410 DKC63-60RIB -RIB RK871 6W80 DG-RIB TP P -RIB JS 7668 VT2 PRO RIB -RIB 6462STRIB -RIB RIB P1248 -RIB 6241 RK935SST -RIB E6015 -RIB F A15 VT2 YGVT2 31 2C799 -RIB P1197 -RIB 7198STRIB -RIB DKC61-79RIB -RIB 62A13 SS TP SS -RIB DKC62-77RIB -RIB RK834SST -RIB C744SS 3131 R436SS RK858 -RIB C1ST M67-85BR CBRW 5832A3 DKC61-55RIB DG-RIB 6 5F- C621SS 6S68 -RIB M F-510 6W82 DG-RIB 62A16 VT2 YGVT RIB N-914 C712DP RK860 -RIB JS 9503 SS RIB -RIB 7204 DKC60-67RIB -RIB RIB 6399STRIB -RIB P1151 -RIB 63A16 VT2 PRO C602SS 2V709 -RIB E2305RR Ames Keystone Clarence

14 Table 10. district, 2015 district and single-location means. -season test,. Brand Name MorCorn MorCorn MorCorn MorCorn Phoenix Roeschley MorCorn Experiment Mean Minimum Mean Maximum Mean LSD(0.25) Coefficient of Variability STRIB P1197 C733SS 6185STRIB RK834SST 7198STRIB MCP ST RK860 5F-510 DKC61-55RIB P1248 M66-23BRG MC4178RIB C621SS 59A16 SS TP SS RK871 5F-811 DKC62-77RIB 7355 MCP-1508 MC3966 DKC61-79RIB 31 M24763 RK A3 6W A16 VT M-1610E-14 5F-709 6S VT2RIB TP P E6015 R436SS M-1409F-17 MC3544RIB M-1407D-14 C728 2V709 C1ST 2Y669 M12-41 M-1408F-17 M-909C SS T 61A P1151 E5712 C594 M-1508P-12 62A13 SS Trait Pkg -RIB -RIB -RIB -RIB -RIB -RIB -RIB DG-RIB -RIB -RIB -RIB -RIB -RIB -RIB DG-RIB -RIB YGVT2 -RIB -RIB -RIB -RIB -RIB -RIB -RIB T-RIB -RIB -RIB -RIB Herb Tech LL, LL, LL, LL, LL, LL, LL, LL,, LL LL, LL, LL,, LL LL,, LL LL, LL, LL,, LL LL, LL, LL, LL, LL,, LL LL, LL, LL, LL, District Means SW SE Moist % Single Location AGV $ Malvern Corning Milo Batavia Crawfordsville

15 Table 11. district, 2015 district and single-location means. -season test, >. Brand Name MorCorn Beck NuTech MorCorn MorCorn Phoenix MorCorn Experiment Mean Minimum Mean Maximum Mean LSD(0.25) Coefficient of Variability MC Z-015 DKC63-60RIB 6365 P2089 M15-14BRG 7358STRIB 5F-713 RK935SST P A3 64A15 VT2 6462STRIB STRIB TP M-1311R-17 5N-914 C744SS 2C799 2C788 DKC64-89RIB 5F-515 MC4377DGRIB M-1314D-14 TP P 2M14-SS M-1413K-14 M-1413M TP SS 5F- DKC63-72RIB MC4354RIB RK941SST M-1412M-17 P CBLL 7414VT3RIB 6W A4 63A16 VT2 PRO 3145ART M-1211K E2305RR M MCP-1509 Trait Pkg -RIB -RIB -RIB -RIB -RIB -RIB YGVT2 -RIB -RIB -RIB -RIB -RIB DG-RIB -RIB -RIB -RIB DG-RIB -RIB -RIB -RIB CB -RIB DG-RIB V3 ARTSN Herb Tech LL, LL, LL, LL,, LL LL, LL, LL, LL,, LL, LL LL, LL, LL, LL, LL, LL, LL, LL, LL,, LL LL,, LL, LL District Means SW SE Moist % Single Location AGV $ Malvern Corning Milo Batavia Crawfordsville

16 Table 12. Origin and descriptive information for 2015 entries. Beck: Beck s s, Atlanta, IN 5162A3 5852D2 6948A3 115, LL V3, LL, LL ESC ESC ESC : Beck s s, Atlanta, IN -RIB LL, -RIB LL, T-RIB LL, -RIB LL, -RIB LL, ESC ESC ESC ESC ESC : Seed, Ellsworth, IA 50A15 VT2 PRO 51A16 SS 52A14 VT2 53A15 SS 56A13 VT2 PRO 57A13 SS 57A16 SS 58A13 SS 59A16 SS 61A14 62A13 SS 62A16 VT2 63A16 VT2 PRO 64A15 VT RIB YGVT2 YGVT2 YGVT2 C290 C338DGDP C374 C380SS C457SS C490 C533SS C574SS C576SS C594 C602SS C621SS C712DP C728 C733SS C744SS (317) : Seed, Bellevue, IA DG, LL LL, LL, LL, LL, LL, LL, LL, L is a registered trademark of DuPont T (317) (888) (800)

17 Table 12. Origin and descriptive information for 2015 entries. : Monsanto, St. Louis, MO DKC49-72RIB DKC50-82RIB DKC52-84RIB DKC53-68RIB DKC54-38RIB DKC55-20RIB DKC55-93RIB DKC58-06RIB DKC60-67RIB DKC61-55RIB DKC61-79RIB DKC62-77RIB DKC63-60RIB DKC63-72RIB DKC64-89RIB RIB LL, DG-RIB -RIB LL, -RIB LL, -RIB LL, -RIB LL, -RIB LL, -RIB LL, -RIB LL, DG-RIB -RIB -RIB LL, -RIB LL, DG-RIB -RIB :, Oskaloosa, IA ART 3149CBLL C1ST SS43 115, LL, LL ARTSN CB, LL, LL, LL E1003 E0 E1302SS E1310 E1410 E1610 E1705RR E1803 E2305RR E : Seed Co., Logan, IA 6D40 6S29 6S68 6W80 6W82 E5712 E6015 -RIB -RIB -RIB DG-RIB DG-RIB -RIB -RIB : Bros. s, Inc., Shell Rock, IA LL, Continued (800) (319) (800) (712)

18 Table 12. Origin and descriptive information for 2015 entries. : s, Ovid, MI 5283STRIB 5755STRIB 5918STRIB 5944ST 6185STRIB 6399STRIB 6462STRIB -RIB -RIB -RIB -RIB -RIB -RIB P500 P500 P500 P500 P500 P500 P500 Jacobsen: Jacobsen Corn Co., Inc, Lake View, IA JS 7279 VT2 PRO RIB JS 7668 VT2 PRO RIB JS 9306 SS RIB JS 9468 SS RIB JS 9503 SS RIB -RIB -RIB -RIB LL, -RIB LL, -RIB LL, Masters Choice: Masters Choice Inc., Anna, IL MC 5250 MCT 527 MCT 5371 MCT 5661 : Seeds, Inc., West Point, IA M-1211K-17 M-1311R-17 M-1314D-14 M-1407D-14 M-1408F-17 M-1409F-17 M-1412M-17 M-1413K-14 M-1413M-17 M-1508P-12 M-1610E-14 M-909C (800) (800) V3 LL, LL, LL, LL, LL, LL, LL, Continued (866) (800)

19 Table 12. Origin and descriptive information for 2015 entries. : s, Inc., Kalona, IA M05-68G M06-27BR M06-94BRGV M07-25BR M08-68 M11-52 M12-41 M14-28 M14-28BRG M15-14BRG M66-23BRG M67-85BR 115 CBRW LL V3, LL CBRW LL, LL, LL, LL CBRW LL MorCorn: MFA Inc., Columbia, MO MC3544RIB MC3966 MC4178RIB MC4319 MC4354RIB MC4377DGRIB MCP-1504 MCP-1508 MCP RIB -RIB -RIB DG-RIB 2A627 2C788 2C799 2G584 2T619 2V489 2V709 2Y669 M24763 M , LL, LL, LL (319) (573) (800) MYCOGEN NuTech: NuTech Seed, LLC, Ames, IA 0A-0 5N-0 5N-410 5N : Seeds, Indianapolis, IN -RIB LL, -RIB LL, -RIB LL,, LL -RIB LL, -RIB LL, -RIB LL, -RIB LL, LL, -RIB LL, Continued (515)

20 Table 12. Origin and descriptive information for 2015 entries. : NuTech Seed, LLC, Ames, IA 5F-002 5F- 5F-198 5F-510 5F-515 5F-707 5F-709 5F-713 5F-811 5F-814 5H-806 5K R Z-015 5Z Z-308 5Z-504 5Z LL, LL, LL, LL, LL, LL, LL, LL, LL, LL, H1 LL, T LL, OT LL, LL, LL, LL, LL, LL, LL, LL, Phoenix: Beck s s, Atlanta, IN 5832A3 6542A4 115 ESC ESC : DuPont, Johnston, IA P0157 P0297T P0636 P0937 P0993HR P1151 P1197 P1248 P1498 P1690 P RIB LL, T-RIB LL, -RIB LL, -RIB LL, H1 LL, -RIB LL, -RIB LL, -RIB LL, -RIB LL, -RIB LL, -RIB LL, PPST PPST PPST PPST PPST PPST PPST PPST PPST PPST PPST (515) Phoenix is a trademark of Syngenta, LL V3, LL Continued (317) (888)

21 Table 12. Origin and descriptive information for 2015 entries. :, Deer Grove, IL :, Battle Creek, NE 5898STRIB 6STRIB 6318STRIB 6508STRIB 6878STRIB 6968STRIB 7068ST 7198STRIB 7213VT2RIB 7268STRIB 7358STRIB 7414VT3RIB 98 -RIB LL, -RIB LL, -RIB LL, -RIB LL, -RIB LL, -RIB LL, -RIB LL, -RIB LL, -RIB -RIB LL, -RIB LL, -RIB LL, : Seed Co., Sun Prairie, WI RK612SST RK629 RK633SST RK666SST RK680SST RK699SST RK712SST RK752SST RK776SST RK791SST RK810SST RK834SST RK858 RK860 RK871 RK935SST RK941SST 100 LL, -RIB -RIB LL, -RIB LL, LL, -RIB LL, -RIB LL, -RIB LL, -RIB LL, -RIB LL, LL, -RIB LL, -RIB -RIB -RIB LL, -RIB LL, R215 R436SS (815) Roeschley: s, Inc., Kalona, IA, LL Continued (888) (800) BUY RENK (319)

22 Table 12. Origin and descriptive information for 2015 entries. : Seed Solutions, Linden, IN : SCI, Inc., Clear Lake, IA 1 2M04-2P 2M07-SS 2M08-2P 2M14-SS 81A10 TP TP A TP SS TP SS TP SS TP TP TP P TP P TP TP P TP SS TP P TP SS TP SS -RIB -RIB -RIB -RIB CBRW, LL -RIB -RIB -RIB -RIB -RIB V3 -RIB -RIB -RIB -RIB -RIB 30-06N 49-09N 57-01N 60-01N 63-05N 72-04N D37-98RL D52-05RL D71-01RL D83-03RL T51-01R (866) (641) P500 P500 P500 P500 : Albert Lea Seed House, Albert Lea, MN -RIB LL, -RIB LL, -RIB LL, -RIB LL, ARTSN Continued (800)

23 Do Your Homework SOYB EAN research Celebrating 96 years of helping Iowa farm ers. I ow Perf a Crop orm a Test nce s grow CORN A su Depar A summar y of repl tmen icated research t of A gron by Iow a Crop omy Improve ment Ass ociation mm ary Dep art of re plica ted me rese nt o fa gro by arch Iowa Cr op Im nom y prov emen t As socia tion learn We provide Iowa corn and soybean growers the information they need to make the best seed choices for their farms. You can look it up! Department of Agronomy 2015 Iowa Crop Improvement Association. All Rights Reserved 23

24 Department of Agronomy A summary of replicated research by Iowa Crop Improvement Association