ISHS Acta Horticulturae 98: Symposium on Research on Recirculating Water Culture
DISEASE IN NFT |
| Author: | J.M.L. Davies |
| Abstract:
In Jersey very few pathological problems have occurred in commercially grown NFT crops of tomatoes. Significant infections and plant losses due to stem rot Didymella lycopersici and bacterial canker Corynebacterium michiganense have occurred but not as a consequence of growing in NFT. Other problems of lesser significance, such as infections with Pythium spp. Spongospora subterranea and Verticillium sp have been observed. Non-pathological 'collar burn' accounted for high losses in 2 open line systems in 1978. Root death with subsequent Pythium infection has been overcome by the use of thicker gauge liner polythene and by heating the solutions to 20–22°C. No infections with Phytophthora spp have been detected in any NFT grown crops. Apart from a few tomato crops treated in 1978 no fungicides have been routinely added to the solutions in 1979. Tomato plants were not successfully inoculated when Didymella lycopersici and Corynebacterium michiganense were added to the solution. In small scale trials with NFT grown carnations, both Fusarium oxysporum f sp dianthi and Fusarium culmorum problems have been encountered. | |
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