ISHS Acta Horticulturae 821: International Symposium on Tomato in the Tropics
ECOLOGICAL ASPECTS OF PLANT VIRUSES IN TOMATO AND PATHOGEN RISK ASSESSMENT |
| Authors: | M. Bandte, W. Pestemer, C. Büttner, C. Ulrichs |
| Keywords: | epidemiology, control, TYLCV, PepMV, TSWV |
| Abstract:
A number of viruses are known to infect tomato (Solanum lycopersicum L.) crops and cause significant losses by reducing fruit quality and yield. Three economically important viruses selected and discussed in terms of epidemiology and control were the whitefly-transmitted Tomato yellow leaf curl virus (TYLCV) and Pepino mosaic virus (PepMV), being under official control in Europe, and Tomato spotted wilt virus (TSWV). TSWV endanger the commercial production due to its large host range and transmissibility by thrip vectors. An effective management requires the evaluation of host plant susceptibility, pathogen and favourable environment. Growth practices maintaining good plant vigour and application of pesticides or plant growth enhancers contribute to the optimal health status of plants. As a cure of virus-infected greenhouse grown tomato may not be possible, prophylactic measures while establishing a new culture and detection of viral infection at early stages followed by subsequent elimination of infected plants constitute the main approach to combat viral disorders. Prophylactic measures, such as decontamination of pots, tables and other tools by chemical disinfectants, should be routinely applied in-between crop rotation. Prospective irrigation water or nutrient solution in hydroponic systems may be decontaminated in a large scale by specific filters. | |
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