Copper uptake from foliar applied copper sources by wheat plants
Ruppe, J.; Podlesak, W.
Zeitschrift fuer Pflanzenernaehrung und Bodenkunde 155(1): 39-42
Cu uptake of young wheat plants from foliar applied Cu sources such as Cu sulfate, Cu oxide chloride, Cu EDTA, and Cu lignosulphonate was studied over periods of 48 hours. Compared to Cu oxide chloride, Cu uptake from the remaining Cu compounds was approximately 3 times higher. Additives increased the adhesion of the Cu sources and supported Cu uptake. In pot experiments with Cu deficient soil, foliar applied Cu lignosulphonate with the addition of alkylphenolpolyglycolether, urea and sucrose was the most efficient Cu source. Splitting of the total Cu amount into two doses applied in intervals of 24 hours was the most effective treatment. In this case, grain yield was 90% of that obtained in the same soil with adequate Cu supply.