Oregon State University. Extension Service; Mack, H. J. (Harry John), 1926-; Gardner, Ernest Hugh; Jackson, T. L. (Thomas Lloyd), 1922- (Corvallis : Oregon State University, Extension Service, 1984-11)
Good management practices are essential if optimum fertilizer responses are to be realized. These practices include use of recommended varieties, selection of adapted soils, weed control, disease and insect control, good ...