ISHS Acta Horticulturae 98: Symposium on Research on Recirculating Water Culture
THE RESPONSES OF CHRYSANTHEMUM TO VARIATIONS IN SALT CONCENTRATION WHEN GROWN IN RECIRCULATED NUTRIENT SOLUTION |
| Authors: | H.R. Gislerod, A.R. Selmer-Olsen |
| Abstract:
Six cultivars of Chrysanthemum were grown in nutrient solutions at three different salt concentrations. They corresponded at the beginning to 1.2, 2.0 and 3.7 mmho cm-1 and increased during the growing period to 2.0, 4.6 and 10.0 mmho cm-1 respectively. A nutrient film system with sloping gullies and recirculating solution was used. The plants had the best growth in the medium concentration which corresponds to what might be called a "normal" concentration. At this concentration the plants were tallest and had the highest fresh weight. They also had the best quality but it was not significantly different from that of the other concentrations. The results proved that Chrysanthemum can be grown over a wide range of concentrations when using nutrient film culture. The growth was not severely affected by increasing the total concentration to twice that of a normal concentration. A decrease in concentration on the other hand led to deficiency symptoms. | |
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