INTRODUCTION

The 2010 UEOPN was grown at 8 locations in 6 states;  however, no reliable data was obtained from the Beresford, South Dakota, location due to excessive rainfall, the C.V. for yield at Madison, Wisconsin, was quite high due to excess rainfall and high lodging, and Aberdeen, Idaho, is out of the area of adaptation for the UEOPN.  The overall nursey average yield omitting these locations was 114.5 bu/A.  This nursery average is about 9 bu/A lower than in 2009 but about 16 bu/A higher than 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 Brookings, South Dakota, with an average yield of 135.9 bu/A.  The lowest overall yield was recorded at Madison, Wisconsin (65.5 bu/A).

The South Dakota entry SD 081038 was the highest yielding entry over all locations.  This entry was also highest in groat yield based on 4 of the locations that submitted grain samples (Appendix B), third highest in test weight, and best in lodging resistance..

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 2010 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 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/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.