Oregon State University. Extension Service; Gardner, Ernest Hugh; Mansour, N. S.; Mack, H. J. (Harry John), 1926-; Jackson, T. L. (Thomas Lloyd), 1922-; Burr, J. (Corvallis : Oregon State University, Extension Service, 1979-08)
Good management practices are essential if optimum fertilizer responses are to be realized. These practices include adequate irrigation, use
of recommended varieties, selection of adapted soils, weed control, disease an ...