INTRODUCTION

The 2013 UEOPN was grown at 6 locations in 5 states; however, the Aberdeen, Idaho, location data are not included in the overall nursery averages because it is out of the area of adaptation for the UEOPN. The UEOPN was not grown at the South Dakota locations this year due to a transition in project leadership. The overall nursery average yield omitting Aberdeen, Idaho, was 109.5 bu/A. This nursery average is about 8.5 bu/A higher than in 2012 and 13.3 bu/A higher than the nursery averages of 96.2 bu/A in 2011. The nursery averages ranged from a high of 133.6 bu/A at West Lafayette, Indiana, to a low of 85.6 bu/A at Waseca, MN.

The South Dakota entry SD 111753 was the highest yielding entry over all locations in 2013 at 129.6 bu/A. Entry SD111779 was second at 126.1 bu/A.

Coefficient of Variation (CV) and Least Significant Difference (LSD) values for yield are provided for each location in Table 5 "Average yield (bu/A), yield, and rank at stations reporting the 2013 UEOPN." This information, plus the listing of "Plot Data" and "Comments on Growing Conditions" at individual locations should help in interpreting the results. Crown rust pressure was reported at St. Paul and West Lafayette locations and lodging at West Lafayette and Urbana.

A list of recently released cultivars including state or program of origin, assigned name, experimental line number in testing, nurseries tested in and pedigree can be found in Appendix C. This list, in addition to being included in the annual reports, is to be maintained on the GrainGenes website: http://wheat.pw.usda.gov/GG2/Avena/Oat_releases.html

We wish to thank Mitchell Wise and Laurie Herrin, USDA Cereal Crops Research Unit,

Madison, WI, for analyses of groat protein, beta-glucan, and oil percentages, and Roger

Caspers, University of Minnesota, for groat percent determinations.

This and past years' reports are available at:

http://wheat.pw.usda.gov/ggpages/UE-MOPN.html