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Farm Progress Reports

Number

RFR A1546

Farm

Western Research and Demonstration Farm

Department

Agronomy

Fields

Crops and Soils

Areas

Soybeans

Abstract

The Northern SCN Uniform/Preliminary (UT/PT) Regional Soybean Test is used to evaluate soybean varieties produced by public breeding programs in the northern portion of the United States and Canada. Lines are evaluated in locations with moderate to high SCN pressure. In 2015, five public breeding programs participated in the Northern SCN UT-PT II Trials (Uniform Test II and Preliminary Test II). Public breeders are allowed to enter varieties into the UT-PT Trials in exchange for growing locations for the trial. Material entered into the UT-PT Test is generally in advanced stages of a breeding program. Lines are evaluated one year in Preliminary Testing before being entered in Uniform Tests. Lines usually are evaluated in Uniform trials for two or three years prior to release as new varieties. The UT-PT Soybean Trials are an efficient method for soybean breeders to have a wider geographic range of field evaluations on advanced lines and to evaluate advanced lines from other public programs, which could be used as parents in future crossing. These results also are used in cultivar releases, publications, and publicity, once a variety is released.

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