General Pythium is considered a ‘weak pathogen’, meaning that it can usually only affect plants that are in a sub-optimal condition or suffer from stress
damaging species. Thrips form the order Thysanoptera, a name that literally means ‘fringed wings’, and refers to the eyelash-like fringe of hairs along both
General Clavibacter is a quarantine organism in Europe, which means that strong efforts are used to prevent the bacterium from entering. When the occasional
roots. The main damage caused by damping-off is reduction of the stand, meaning it is very often necessary to replant, which increases the crop's production
spreading further. Crop rotation Crop rotation is a fundamental strategy, which means avoiding planting the same crop in the same location year after year. Rotating
honeydew. The concealed habit and the protective covering of these insects mean that they are very well protected against natural enemies and also against
emerge from the insect netting at a good rate over a longer period. This means that there is always a strong population in the greenhouse crop and control
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differ per incident. The stinger of a bumblebee or a wasp has no barbs. This means that the worker or queen can withdraw her stinger, and is able to sting again