Ohio Soybean Performance Trials 2020
Allen Geyer, Matthew Hankinson, John McCormick, and Laura Lindsey
Dept. of Horticulture & Crop Science
Ohio State University Extension and OARDC
The Ohio State University, College of Food, Agriculture and Environmental Science
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.
FIELD PLOT DESIGN
The entries for each test site were planted in a randomized complete block design. Each entry was replicated four times and planted in plots 28 ft long and 5 ft wide containing four rows seeded at 15-inch row width. Seeding rate was 150,000 seeds per acre. Corn was the previous crop at all locations except C1 where a cover crop was planted into a 2019 prevent plant field. All locations were no-till except the C1 and S2 locations, which were planted into a stale seedbed. Farmer cooperators sprayed pre-emergence herbicides (varied by location). All locations were sprayed post-emergence with First Rate, Flexstar, and Select Max.
METHOD OF CONDUCTING TRIALS
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 2020 entries were submitted voluntarily by seed companies. Entry fee charges were paid per entry and region.
Test by Maturity and Type. Varieties were grouped, tested and analyzed by maturity (early and late). Conventional (CV), Liberty Link (Liberty), Xtend, Enlist, and Liberty Link/glyphosate tolerant (LLGT27) varieties were tested in the same block to allow for head-to-head comparisons. Varieties are comparable within a location and maturity grouping (early or late). Conventional herbicides were sprayed on all entries. Use the table below to find varieties by region, maturity, and type.
|Table 1: The 2020 Ohio Soybean Performance Trials, Site Descriptions|
|Soil texture||Clay||Sandy Loam||Clay||Clay loam||Clay||Silty clay loam|
|Soil Test P-Mehlich (ppm)||34||20||62||23||85||38|
|Soil Test K (ppm)||170||87||151||110||161||125|
|Plant date||June 6||June 1||June 2||May 27||May 12||May 13|
|Harvest date||Oct 13||Nov 5||Nov 6||Nov 4||Oct 14||Oct 18|
MEASUREMENTS AND RECORDS
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. Relative maturity was submitted by seed companies.
Protein, Oil Percentage. Analysis was determined by near infrared transmittance technology. The test was performed using a Foss NIR whole grain analyzer and is reported at 13 percent moisture. Protein and oil were determined from varieties grown at the C2 location.
LSD. A Least Significant Difference (LSD) for yield was computed for each location and maturity grouping. LSDs are reported in bushels per acre at 13 percent moisture. Yields of two varieties within a location and maturity grouping are significantly different 90% of the time if their yields differ by more than the LSD value shown for that maturity group. A double asterisk (**) is used to denote the variety with the highest yield within a location and maturity grouping. A single asterisk (*) is used to denote varieties with yield not statistically different than the highest yielding variety.
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 Ohio State University Extension.
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Issued in furtherance of Cooperative Extension work, Acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture, Roger Rennekamp, Director, Ohio State University Extension.