Mineral nutrition of ornamental plants XIII: absorption of the macronutrients by chrysanthemum cultivar Golden Polaris

Abstract

In order to obtain: The concentration of the macronutrients in the organs of the plant in accordance with its development; The accumulation of the nutrients by the plant. A field trial was carried out at Campina, State of São Paulo, Brazil. Plants well fertilized (four replication in a randomized test) with 6, 27, 55, 69, 83, 97, 111 and 125 days after planting were collected and divided into stems and leaves for macronutrient analysis. The author concluded that: In the stems and leaves the nutrient concentrations are instable and vary in accordance with the growth of the plant; The concentrations of N, P, K, Mg and S diminished in the stems and leaves while the contents of P increased in the stems and Ca in the leaves; After 125 days of planting the accumulation of nutrients by the stems and leaves of a plant is: K -689 mg; N - 458 mg; Ca - 130 mg; Mg - 52 mg; P - 46 mg; S - 35 mg.