ISHS Acta Horticulturae 98: Symposium on Research on Recirculating Water Culture
THE CHEMICAL COMPOSITION OF TOMATOES GROWN IN NUTRIENT FILM CULTURE |
| Author: | A. Granges |
| Abstract:
The chemical composition of tomatoes from plants grown in soil and nutrient film were compared on two sampling occasions in each of two experiments. In the first experiment (planted 9.3.1977), two night temperatures (12° and 16°C) were included with a common day temperature (22°C). Fruit from plants grown in the soil were more acid, but had lower reducing sugar and ash contents than those grown in NFT. The method of culture had no effect on dry matter content. The higher night temperature increased the dry matter content slightly, but reduced the ash content. Similar differences between fruit from plants grown in soil and in nutrient film were found in a second experiment (planted 15.3.1979) in which only one temperature regime was used.
The | |
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-carotene content of the fruit was 70% higher in fruit grown in soil than in those grown in nutrient film culture, but there were no differences in vitamin C content.
