Effect of N, P, K and Zn foliar fertilization on the yield of Catharanthus roseus L. (G) Don.
Barbara Łata, Ała Sadowska
Anticancer Plant Laboratory
Warsaw Agricultural University
Nowoursynowska 166, 02-787 Warsaw, Poland
Three series of experiments were carried out to evaluate the effect of
foliar fertilization with nitrogen, phosphorus, potassium, and zinc on the
yield of raw material and alkaloid content in Catharanthus roseus.
In 1990 the plants were grown in unhheated foil tunnels, in 1991 in foil
tunnels and greenhouse. The following foliar sprayings were compared with
control (without any supplementary fertilization): CO(NH2)2,
CO(NH2)2 + Ca(NO3)2,
and CO(NH2)2 +
+ KCl. In each series of the experiment 7 sprayings were performed. Owing
to foliar fertilization, the content of N, P, K, and Zn in leaves
increased significantly in comparison with control. Among the elements
applied, Zn was absorbed most intensively. The most significant
differences caused by foliar fertilization were observed in the yield of
dry matter of leaves. In all series of the experiment foliar fertilization
resulted in a significant increase in yield. The highest yield of dry
matter of raw material (leaves and roots) and the highest yield of
alkaloids were obtained as a result of foliar fertilization with amide
nitrogen and phosphorus or amide nitrogen and zinc.
Łata B., Sadowska A., 1996. Effect of N, P, K and Zn foliar fertilization on the
yield of Catharanthus roseus L. (G) Don. Folia Horticulturae 8/2: 51-58.