2011 Ohio Soybean Performance Trial Entries in Order of Relative Maturity

North Region Normal Varieties:
All Maturities

North Region Roundup Ready Varieties:
Early Maturity
Late Maturity

Central Region Normal and Liberty Link Varieties:
All Maturites

Central Region Roundup Ready Varieties:
Early Maturity
Late Maturity

South Region Normal and Liberty Link Varieties:
All Maturities

 South Region Roundup Ready Varieties:
Early Maturity
Late Maturity

Rps Genes

Directory of Companies

Soybean Trial Entry Forms



O H I O   S O Y B E A N

P E R F O R M A N C E   T R I A L S


Chris D. Kroon Van Diest, Research Associate, Dept. of Horticulture & Crop Science

Mark Sulc, Professor, Dept of Horticulture and Crop Science

John McCormick, Research Associate, Dept. of Horticulture & Crop Science

Anne Dorrance, Professor, Dept. of Plant Pathology

The Ohio State University, College of Food, Agriculture and Environmental Science

Ohio State University Extension and OARDC

Edzard van Santen, Professor, Dept. of Agronomy & Soils, Auburn University





The purpose of the Ohio Soybean Performance Trials is to evaluate soybean varieties for yield, and other agronomic characteristics. This evaluation gives soybean producers comparative information for selecting the best varieties for their unique production systems.



The entries for each test site were planted in a randomized complete-block design. Each entry was replicated four times and planted in plots 40 ft. long and 5 ft. wide containing four rows seeded at 140,000 seeds per acre.



Entries in Trials.  Performance of entries in The Ohio Soybean Performance Trials are published if seed will be available to Ohio soybean producers for the following planting season. All 2011 entries were submitted voluntarily by seed companies and the Ohio Seed Improvement Association. Entry fee charges were paid per entry and location.


Test by Type. Varieties are grouped, tested and analyzed by type and maturity. All normal and Liberty Link varieties are tested as a group. Roundup Ready varieties are tested in two groups (early and late) based on maturity. The same production, testing and evaluation techniques, except for weed control, were used for normal tests and Roundup Ready tests. The performance of normal & Liberty Link entries and Roundup Ready entries is not comparable statistically because they were not tested and analyzed together. Varieties should only be compared within a test group not between test groups.


Relative Maturity.  Relative maturity is a rating designed to account for all of the factors that affect maturity date and includes variety, planting date, weather, latitude and disease. Maturity is defined as the “95% brown pods” stage. A variety with a Relative Maturity rating of 3.5 will reach the 95% brown pod stage 5 days later than a variety with a rating of 3.0.  The varieties in each table were tested as a group, and their performance analyzed and reported for that group.


Seed size is reported as seeds per pound.


Yield. Each soybean variety was harvested when the moisture content was between 8 and 12 percent and

yields reported in bushels per acre at 13 percent moisture.


Lodging score. There was no lodging in 2011.


Protein and Oil %. Analysis was determined by near infrared transmittance technology. The test was performed by the OSU Grain Quality Lab using a Tecator Infratec whole grain analyzer calibrated with the Composition Systems Calibration developed at Iowa State University and is reported at 13% moisture. 


Phytophthora Resistance Genes. Phytophthora resistance genes were determined using a hypocotyl inoculation test.  In this test, several races of Phytophthora are used to determine the presence or absence of a particular Rps gene. The Rps genes (Rps1a, Rps1c, etc.) detected in a variety are listed in Tables 3-8. "ND" indicates that the Rps gene(s) could not be determined, and the variety has Rps6, Rps8 or a Rps gene combination of either 1c+3a or 1k+3a. "None" indicates no Rps genes were detected. See Table 12 for this information.  See Table 12 for this information.


Phytophthora Partial Resistance. All varieties were evaluated for partial resistance. Partial resistance is a multigenic characteristic that provides some level of protection against all known races of Phytophthora. Ratings of 3.0 to 3.9 are considered high levels of partial resistance and will provide good levels of control.  Ratings of 4.0 to 4.9 are considered moderate and will allow some yield loss when environmental conditions favor infection by Phytophthora. Ratings of 5.0 to 5.9 indicate low levels partial resistance or protection against Phytophthora. Ratings of 6.0 and greater indicate very low levels and severe yield losses will result when Phytophthora pressure is high.  For fields with a history of Phytophthora root and stem rot, varieties should have a combination of both an Rps gene plus good partial resistance to provide the best protection.


LSD. A Least Significant Difference (LSD) for yield was computed for each maturity group. LSD's are reported in bushels per acre at 13 percent moisture. Yields of two varieties within a maturity group are significantly different 90% of the time if their yields differ by more than the LSD value shown for that maturity group.


DATA USE.  Inclusion of entries in the Ohio Soybean Performance Trials does not constitute an endorsement of a particular entry by the Ohio State University, Ohio Agricultural Research and Development Center, or the Ohio State University Extension.


Table 1: The 2011 Ohio Soybean Performance Trials, Production Practices          

                                                      N1                    N2                        C1                          C2                       S1                    S2

                                                Henry Co.       Erie Co.          Mercer Co.        Delaware Co.     Preble Co.    Fayette Co.


      Fall                                   None                None                 Field Cult.                   None                  None                 None

      Spring                              None                None                     None                       None                  None                 None


Soil and Crop Background

      Soil Type                         Hoytville         Kibbie                      Mercer                Blount               Crosby            Westland

      Soil pH                             7.64                  7.68                          7.39                      7.62                    7.75                   7.55

      Soil Test P(ppm)             29.4                  17.3                          16.2                      21.7                    20.2                   20.0

      Soil Test K(ppm)            159.3                146.3                        129.9                    72.9                    125.1                 159.8

      Previous Crop                 Corn                Corn                        Corn                     Corn                  Corn                 Corn

      Plant Date                        6/6                   6/5                            6/3                        6/4                      6/1                     6/7                        

      Harvest Date                   11/4                 11/4                         11/6                       11/7                    10/30                 11/1


Normal Variety Weed Control

     Preemerge   (all sites)  Valor XLT /  Dual II  /  Roundup UltraMax

      Postemerge (all sites)   Basagran  /  Flexstar  /  SelectMax


Roundup Ready Variety Weed Control

      Preemerge  (all sites)  Valor XLT /  Dual II  /  Roundup UltraMax

      Postemerge (all sites)  Roundup UltraMax  /  SelectMax 



11/11       All educational programs and activities conducted by Ohio State University Extension are available to clientele on a nondiscriminatory basis without regard to race, color, creed, religion, sexual orientation, national origin, gender, age, disability or Vietnam-era veteran status. Issued in furtherance of Cooperative Extension work, Acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture, Keith L. Smith, Director, Ohio State University Extension.