INTRODUCTION

The 2011 UEOPN was grown at 8 locations in 6 states;  however, the C.V. for yield at Waseca, Minnesota, was quite high due to late planting and poor growing conditions and the Aberdeen, Idaho, location is out of the area of adaptation for the UEOPN.  The overall nursery average yield omitting these locations was 96.2 bu/A.  This nursery average is about 8 bu/A lower than in 2010 and 21 bu/A lower than in 2009 but similar to the nursery averages of 97.2 bu/A in 2008 and 98.9 bu/A in 2007.  The highest location average yield was recorded at Beresfords, South Dakota, with an average yield of 118.4 bu/A.  The lowest overall yield was recorded at Rosemount, Minnesota (67.2 bu/A).

The South Dakota entry SD 090893 was the highest yielding entry over all locations in 2011 at 115.8 bu/A.  This entry was also second highest in groat percent based on the 4 locations that submitted grain samples.  Second highest yielding entry in 2011 was the repeat entry   SD 081038 at 113.7 bu/A.  This repeat entry also was the best in lodging resistance in the 2011 nurseries but was lowest in percent oil and beta-glucan.

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.

The groat percentages were determined by dehulling a 50-gram sample with a Codema oat dehuller.  The protein and oil samples were run on the Infratec 1255 Food and Feed Analyzer (whole seeds using near-infrared transmittance).  A standard regression for protein was made using a sub-set of samples, which was run on the Leco FP-428 nitrogen combustion apparatus.  The oil regression was based on NMR analyses.  Beta-glucan values were determined by chemical analysis using the calcofluor fluorescence method.

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 determinations of oat groat percentages.

This and past years' reports are available at:

http://wheat.pw.usda.gov/GG2/Avena/UE-MOPN.html.