Ohio Soybean Performance Trials 2000

Ohio State University Extension
Ohio Agricultural Research and Development Center
The Ohio State University

Horticulture and Crop Science
Series 212
November 2000

James E. Beuerlein, Professor, Dept. of Horticulture & Crop Science
Steve St. Martin, Professor, Dept. of Horticulture & Crop Science
Anne Dorrence, Assistant Professor, Dept. of Plant Pathology
Chris D. Kroon Van Diest, Research Associate, Dept. of Horticulture & Crop Science

Ohio State University Extension /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, brands and blends for yield, and other characteristics. This evaluation gives the soybean producer comparative information for selecting the best varieties for a unique production system.

2000 Ohio Soybean Performance Trial Entries in Order of Relative Maturity

• Table 3.  Normal Varieties with Early Maturity: 2.3 - 3.4
• Table 4.  Roundup Ready Varieties with Early Maturity: 2.5 - 3.2
• Table 5.  Normal Varieties with Late Maturity: 3.5 - 4.2
• Table 6.  Roundup Ready Varieties with Late Maturity: 3.3 - 4.1

METHOD OF CONDUCTING TRIALS

Normal and Roundup Ready (RR) Test. The same production, testing and evaluation techniques, except for weed control, were used for Normal tests and Roundup Ready tests. The performance of Normal entries and Roundup Ready entries is not comparable statistically because they were not tested together and because different weed control programs were used for the two tests.

FIELD PLOT DESIGN

All field tests were planted in a randomized complete-block design for each maturity grouping.. Each entry was replicated four times and planted in plots 45 ft. long and 5 ft. wide containing four rows seeded at 170,000 seeds per acre.

MEASUREMENTS AND RECORDS

Relative maturity. Relative maturity is a rating designed to account for all of the factors that affect maturity date and number of days from planting to maturity. These factors include variety, planting date, rainfall, latitude and disease. The method used to determine maturity was the 95% brown pods reading. 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.

Yield. Each soybean variety was harvested at a moisture content between 10 and 17 percent and yields computed to bushels per acre at 13 percent moisture.

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 70% 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.

Agronomic, Disease and other performance data normally provided for each variety in this report will be added as it becomes available in early November. This report can be found on the Internet at: www.ag.ohio-state.edu/~perf.

Any data column can be sorted by clicking on the button at the top of the column.