Field-scale trials conducted over a three-year period in the Coalinga area of Fresno County show geographic source of California grown barley planting seed of the same variety has no significant effect on yield, if the quality is otherwise equal. Certified planting stock grown each year at three different geographic locations—Davis, Coalinga, and El Centro—was obtained and planted annually in replicated trials and harvested during 1958, 1959 and 1960.

Waldo W. Weeth, Weeth Ranch, Coalinga, cooperated in the above reported trials.

The above progress report is based on Research Project No. 1819.