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ISHS Acta Horticulturae 654: International Workshop on Models for Plant Growth and Control of Product Quality in Horticultural Production

MODELLING ION CONCENTRATION IN THE CULTURE SOLUTION OF CLOSED-LOOP HYDROPONICS

Authors:   G. Carmassi, R. Maggini, L. Incrocci
Keywords:   salinity, soilless culture, tomato, mineral nutrition, uptake concentration
Abstract:
This paper introduces a simple mathematical model for the evolution in time of the concentration of both nutrients and potentially toxic ions, such as Na+, in the recirculating culture solution in closed growing systems. The model was calibrated for tomato (Lycopersicon esculentum Mill.) using data from literature and validated with independent data sets from experiments conducted in different growing seasons using water with different NaCl concentration. The results of validation show that the model may be a useful tool for the management of closed loop hydroponics.
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