30 FUNGOID DISEASES 



Water from No. (i) is used to keep up the bulk 

 and temperature of Nos. (2) and (3). If properly 

 carried out the warm water not only kills the spores 

 of bunt or smut, but also favours subsequent ger- 

 mination of the ofrain. 



Necessary Precautiojis . — 



{a) Maintain the temperature of the water in 

 No. (3) vessel. 



(b) Never have it above 130'' F. for barley, the 

 embryo of which is easily injured by higher tem- 

 peratures. 



{c) Never allow it to rise above 135° F. for other 

 ofrain. 



(d) Have the volume of water at least eight times 

 as large as that of the sack containing the grain. 



[e) Do not fill the sack, but allow free movement 

 of the grain. 



(/) Keep the grain in No. (3) exactly 10 minutes. 



iyg) Do not leave in a thick layer after treatment, 

 but spread out to dry. 



With a badly infested sample of wheat the bunted 

 grains should be removed by throwing the whole in 

 water — they float on the surface and may be 

 skimmed off. 



(B) Jensens Modified Hot Water Treatment for 

 Loose Smut of Barley and Wheat. — Soak the 

 grain in cold water (60° to 70° F.) for 4 or 5 

 hours ; remove, dip for a moment into a vessel 

 of water at 120° F., then for barley immerse for 



