US Pacific Northwest bread wheat variety acreages 1919 to 2011

The variety acreage data from 1919 to 1984 were obtained from the five-yearly Distribution of the Varieties and Classes of Wheat in the United States reports. Variety acreage data after 1984 were requested from the USDA National Agricultural Statistics Services. Acreages of only named varieties have been included, while acreages given under the category of "others" have not been included. Hence the total yearly acreages in this dataset can be less than the total in the original reports. Reports after 1985 also included acreages of mixtures. In these cases, the acreages were equally divided into component varieties. For example, if Breuhl-Coda mixture had 2000 acres, 1000 acres each were added to Breuhl and Coda and the entry of Breuhl-Coda was removed to keep the total constant. The acreages under the state named "PNW" is sum of the acreages of the three states: Idaho, Oregon, and Washington. Whether a variety is privately-bred or publicly-bred was determined by checking information on the ARS-GRIN database, plant variety protection records and the Washington State Crop Improvement Association's website.