48 FUNGOID DISEASES 



Smut. Bunt. 



mycelium with oval a group at the end 



coiiidia at the side (Fi^- 9» C). 

 (Fig. 9, B). 

 Conidia multiply by No budding of conidia. 

 buddintr. 

 Preventive Measures. — 



1 . Treat with copper solution (see p. 28). 



2. Hot water treatment (see p. 29). 



3. Treat with formaldehyde solution, which is the 

 most satisfactory and is easily applied (see p. 32). 



Note. — Various species of Tilletia attack the leaves and fruits 

 of other cultivated plants, but space does not allow of their descrip- 

 tion. 



III. "Rusts." Class: Teliosporej-: ; Order: 

 Uredinales. 



Enormous damage is done annually to our wheat 

 crops by the ravages of the rust fungi ; and this 

 notwithstanding that there are varieties of wheat 

 on the market which are practically resistant to the 

 disease. It is earnestly to be hoped that the 

 efforts of the biologist at the School of Agriculture, 

 Cambridge University, to obtain, by crossing, rust- 

 resisting varieties possessed of that "strength" 

 which the miller desires, will be crowned with suc- 

 cess. Since the above was written a variety (Little 

 Joss) having these qualities has been obtained. 



A few of the most important rusts are described 

 below. 



