1921.] Prevention of Bunt and Smut. 731 



of the above figures were derived from actual counts of carefully 

 selected samples, the others were from estimates made by com- 

 petent persons. When it is remembered that affected ears are 

 totally destroyed, the lamentable waste involved is obvious. 



The Smuts of Barley and Oats play similar havoc with the 

 two cereals involved, and in this case again, careful pickling with 

 Formalin will reduce the disease to practically nil. 



Treatment for Bunt. — The Ministry strongly recommends 

 the use of Formalin, which can be purchased from any chemist. 

 Careful experiments carried out at Wye showed that Formalin 



Fig. I.— Bunt. 



(1 and 2) Bunted ears. (3) Spore-containing grains. 

 (4) Spores of Bunt (Tilletia tritici). (5) Spore germinating. 



was found to be superior to Copper Sulphate, as with it it was 

 possible to obtain absolute control of Bunt with less injury to the 

 grain. 



Formalin is easy to use and gives complete control. Formalin 



