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Sept.-Oct. 1989
Vol. 13, Issue 5
Page 9-13

Richard Regan, OSU Extension Horticulturist, Salem, Oregon

Robert L. Ticknor and Delbert D. Hemphill, North Willamette Experiment Station, Aurora, Oregon.

George Clough and Gary L. Reed, Hermiston Agricultural Research and Extension Center, Hermiston, Oregon.