Integrated control of clubroot: Clubroot can be restricted but only through careful husbandry based on quality science

摘要

3rassicas are Britain's most valuable fresh vegetable. Production is concentrated in the South West, Kent, East Anglia, south Wales, Yorkshire, Lancashire, the Lothians and Fife. In the past decade clubroot disease has reached epidemic levels in all areas and is the largest single cause of crop loss. Even parts of Lincolnshire with soils above pH of 7.2 are badly infested. One pinch of infested soil contains tens of millions of the microbe's (Plasmodio-phora bmssicae) tiny spores. The water and nutrient transport systems of infected plants are destroyed by the invading microbe. Crops turn bluish-green, wilt and massive tumours swell up in the roots, then growth stops and the plants die.