DISEASES 



273 



cacao or coffee estates which have been planted up with rubber, 

 and where the soil, if not exhausted, is at least lacking in some 

 chemical element necessary to the health of the trees. Where 

 these growths are at all troublesome, coolies should be trained 

 to report them. They are easily cut out when quite small, and 



FIG. 79. Illustration showing Fasciation. 



the trees suffer no damage if this is carefully done, . otherwise 

 they are apt to grow to a considerable size, join together and 

 greatly interfere with tapping operations. 



On many estates where these burr growths occur on un- 

 tapped trees they are very prevalent on certain areas, while on 

 other areas the trees are scarcely subject to them. There must 

 s 



