Der zeitliche Verlauf der Aufnahme von Kupfer und Mangan durch den Sproß junger Weizenpflanzen

Uptake of foliar applied copper and manganese by young wheat plants in the course of time Efficiency of foliar applied nutrients depends strongly on the influence of time on the rate of uptake. Rates of uptake of applied elements were determined by dipping shoots of young wheat plants into Cu or Mn sulphate solutions (0,02% Cu; 0,1% Mn) and subsequent washing off the nutrient film in intervals. Initial influx of nutrients was found to be very high, followed by a period of slow uptake after few hours. 28% Cu, but 80% Mn of the applied amounts were absorbed during the 7-day study. 11% of the absorbed Cu and 14% of the Mn were transferred from shoots to roots within two weeks.