INTRODUCTION
The 2012 UEOPN was grown at 8 locations in 6 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 overall nursery average yield omitting this location was 101.0 bu/A.  This nursery average is about 13 bu/A lower than in 2010 and about 22 bu/A lower than in 2009, but slightly higher than the nursery averages of 96.2 bu/A in 2011, 97.2 bu/A in 2008, and 98.9 bu/A in 2007.  There was a large variation in yields among locations.  Low overall yields at Madison, WI, (58.5 bu/A) and St. Paul, Minnesota (66.4 bu/A) were attributed to very hot, dry conditions preceding and during grain fill.   West Lafayette, Indiana, with an average yield of 182.3 bu/A, apparently escaped the effects of the heat due to early planting.
The South Dakota entry SD 1001198 was the highest yielding entry over all locations in 2012 at 113.1 bu/A.  This entry was also highest overall in test weight and third highest in groat percent based on the 4 locations that submitted grain samples.
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 2011 UEOPN."  This information, plus the listing of "Plot Data" and "Comments on Growing Conditions" at individual locations should help in interpreting the results.
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/GG2/Avena/UE-MOPN.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 determinations of oat groat percentages.