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The above outline of treatment is for oats, wheat, and rye. Professor 

 Jensen has determined that barley must be previously soaked iu cold 

 water eight hours, otherwise the smut is not prevented. 



It is to be remembered that this treatment if universal in any section 

 of country will, besides preventing smut in the crop of the seasoHj also 

 insure clean seed for use the following year. It has been established 

 by actual count that the smut often destroys a very large percentage 

 of the crop. When the smut was reported to be inconsiderable or even 

 absent, we have determined that there may be 5 to 15 per cent, of the 

 heads smutted. These are at harvest time usually overlooked because 

 the smut has been blown away and the inconspicuous naked and clean 

 stalk only remains. It might be added in this connection that it has 

 been established recently that the smuts of barley and wheat, though 

 much resembling that of oats, are really different species. 



Finally we may mention by way of suggestion for the benefit of others 

 that farther experimentation is now being prosecuted, or about to be 

 undertaken, having in view the determination of numerous points in 

 connection with the application of fungicides for the prevention of smut. 

 Among these are the following: A comparison of the efficacy under 

 varying conditions of the hot-water treatment with other fungicides ; 

 comparison as to increase of yield when this or any other fungicides are 

 used; trial of the Jensen method with other plants besides oats and 

 wheat, as barley, rye, grasses, millet, and maize; and the determination 

 of the most favorable form of treatment, particularly with reference 

 to the degree of temperature required, the duration of the immersion 

 in hot water, and the mode of cooling. 



Kansas State Ageiculttjeal College, 



Manhattan, Kansas. 



