OBSERVATIONS ON THE EFFECTS OF THE PARASITIC NEMATODES DITYLENCHUS MYCELIOPHAGUS, APHELENCHOIDES COMPOSTICOLA AND PARAPHELENCHUS MYCELIOPHTHORUS ON THE GROWTH AND CROPPING OF MUSHROOMS

The parasitic nematodes Ditylenchus myceliophagus, Aphelenchoides composticola and Paraphelenchus myceliophthorus severely damage mushroom mycelium and, in great numbers, reduce or even prevent cropping. The relationships between fluctuation of nematode population, state of the mycelium, duration of cropping and the yield of mushrooms are illustrated in a series of figures.