Explains the relationship between high soil pH and nutrient deficiencies in blueberries, rhododendrons, azaleas, and other ornamental crops. Color photos illustrate symptoms of pH-induced nutrient deficiency. Presents step-by-step instructions for lowering soil pH, either before a crop is planted or after establishment.
Discusses the processes of manganese (Mn) reaction in the soil, Mn movement in plants, Mn function in plants, results of studies of Mn in Oregon nursery fields, and management practices to prevent Mn deficiency in field-grown red maple. Management practices covered include site selection, nutrient applications, adjusting soil pH, promoting healthy root growth, and soil and foliar applications of Mn.
A dipstick reveals the presence of the disease within minutes