INTRODUCTION
The 2006 UEOPN was grown at 10 locations in 8 states.  The nursery average yield was 112.3 bu/A, nearly 17 bu/A lower than the previous 2 years' harvests.  The highest yield was recorded at West Lafayette, Indiana, with an average yield of 154.3 bu/A.   East Lansing, Michigan, Madison, Wisconsin and Ames, Iowa recorded the next highest yields of 128.2, 126.5 and 126.3 bu/A, respectively.  The lowest yields were recorded in Minnesota with Waseca at 86.6 bu/A and Rosemount at 90.3 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 2006 UEOPN."  These values were either supplied by the cooperator, or the individual plot data were submitted and the values computed.  This informaton 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 fluorescence spectrometry.
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/oat.shtml).
We wish to thank Laurie Herrin, USDA Cereal Crops Research Unit, Madison, WI, for analyses of groat protein, beta-glucan, and oil percentages.
This and past years' reports are available at: http://wheat.pw.usda.gov/GG2/Avena/UE-MOPN.html.
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