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Fluid Journal : Fluid Journal 1993-1995
3 Fluid Journal Summer 1995 Solubility of nutrient elements in solution is important to increase absorption by the foliage and prevent injury. Solution pH has an effect on solubility of nutrient elements, but if too low or too high, may be toxic to the foliage. Not a substitute The major benefits generally given for the use of foliar nutrient application on potatoes are increased yields (preventing yield losses) and improved quality. Foliar-applied nutrients taken up by plants and increased concentrations can indeed be a benefit to plants. Foliar nutrition is ideally designed to provide many elements to a crop that may be limiting production at a time when nutri-ent uptake from the soil is inefficient or nonexistent. While there is ample evidence to indicate that the mechanisms of foliar absorption and translocation largely resemble those of root absorption, foliar fertilization is not a substitute for soil-applied fertilizers. Dr. Hiller is professor in the Depart-ment of Horticulture and Landscape Architecture at Washington State University.
Fluid Journal 1996-1998