SAP IONIC BALANCE IN TWO CARNATION CULTIVARS GROWN UNDER A FERTIGATION SYSTEM
Two carnation cultivars (Barbara and Starlight) were grown under a fertigation system in order to know the level of sap nutrients (NO-3-N; H2PO-4-P; SO2-4-S; Cl-; K+; Ca2+; Mg2+ and Na+) through the culture cycle. Both cultivars showed similar concentrations of NO-3-N, H2PO-4-P and Cl-, Starlight displayed lower contents of SO2-4-S than Barbara (105%). Moreover, Barbara and Starlight presented similar values of Na+ and Mg2+, Starlight showed the highest values of K+ and the lowest of Ca2+. Ionic balances clearly demonstrate the substantial variation between the cultivars studied. Finally, Starlight produced 97% more flower yield than Barbara. In our conditions, Starlight was more profitable.
Zornoza, P., Cadahía, C., Sarro, M.J. and Blázquez, J.A. (1989). SAP IONIC BALANCE IN TWO CARNATION CULTIVARS GROWN UNDER A FERTIGATION SYSTEM. Acta Hortic. 246, 223-226