124 Journal of the Department of Agriculture. 



In bad infec-tions the plants are seriously affected and even the 

 leaves wither. 



As a general rule treatment for these two diseases is not found 

 necessary, but observations should be given to the different cane 

 varieties in cultivation here to see which are the less susceptible to 

 these leaf funoi. 



Fig. 2. — " Eye-spot" di.scase of cine leaves. 



Stalk Diseases. 



The stalk of the cane is the region from which sugar i,-, manu- 

 factured and fungi occurring on or in it should be viewed from two 

 aspects: (1) their effect on the plant as such, (2) their elfect on the 

 sugar stored up in the cane, any loss in sugar which may be caused 

 by their presence, or products formed by them which may later cause 

 trouble in the mills. 



