How to recognize and prevent Pythium
Most pathogenic Pythium species have a large host range across most greenhouse and nursery crops. It can be introduced from infected plugs and other plant material that comes into the greenhouse, but it also hibernates in soil residues on the floor and inside used pots, benches, hoses, walkways, soil floors, potting benches, potting machines, etc. It can also be found in ponds, streams and outdoor soil, so surface water sources and dust that comes into the greenhouse can introduce Pythium.
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