552 



DISEASES OF CULTIVATED PLANTS 



to perform its function of supplying water to the above-ground 

 portion of the plant. 



The following measures for sterilising soil and checking 



FIG. 168. Heterodera radicicola (eelworm), forming galls in 

 tomato root ; slightly reduced. 



the disease, are recommended by the Board of Agriculture, 

 in Leaflet No. 75. 



i. To destroy these eelworms the soil must be thoroughly 



