PROJECT LEADERS: Delbert D. Hemphill, North Willamette R&E Center, Richard Dick and John Hart, Dept. of Crop & Soil Science
COOPERATORS: John Luna and N.S. Mansour, Dept. of Horticulture, John Selker, Dept. of Bioresources Engineering; Marvin Kauffman, Soil Scientist, Neil Christensen, Crop and Soil Science, and 16 vegetable growers
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