300 Report op the Horticulturist of the 



What the Above Results Show. 



With lysol. — The 1 per cent and 2 per cent solutions sprinkled 

 did not injure the seed and entirely prevented smut. The 3 per 

 cent solution sprinkled injured the seed so that one-third of it 

 did not germinate, while the plants from the other two-thirds 

 were stocky, very late in maturing and very rusty. Solutions 

 stronger than 3 per cent injured the seed more in proportion to 

 their increased strengths. 



Soaking the seed for 1 hour with from 3 to 6 parts per 1,000 

 prevented the growth of smut, while untreated seed gave 8 to 10 

 per cent of smutted heads. When the seed was soaked in weaker 

 solution, the smutted heads varied from 0.7 per cent to 5.3 per 

 cent. None of the seed soaked in lysol solutions was injured. 



With formalin. — The 1 per cent solution sprinkled on the seed 

 was effective and did not injure the seed. The 2 per cent solu- 

 tion, sprinkled, killed about 95 per cent of the seed and the 3 per 

 cent solution sprinkled killed even more than this. Two to six 

 parts per 1,000 on seed soaked one hour, and 2 parts per 1,000 

 on seed soaked two hours killed all smut spores without injuring 

 the seed. Weaker solutions gave from 0.3 per cent to 0.7 per 

 cent of smut, while untreated seed gave from 4.7 per cent to 8.7 

 per cent ol smut. 



With potassium sulphide. — Seed sprinkled with from 1 per cent 

 to 5 per cent solution was not injured, but gave from 0.6 per cent 

 to 1 per cent of smut, while the untreated seed gave 6.4 per cent. 

 That soaked in a 2 per cent solution for 1.5 hours and in the 4 

 per cent solution from 0.5 to 1.5 hours prevented smut and caused 

 no injury to the seed. 



With Ceres powder. — Seed treated by sprinkling with from 1 

 per cent to 5 per cent solutions gave from 1 per cent to 2.9 per 

 cent of smutted heads, but was not injured; the untreated seed 

 gave 6.4 per cent of smut. The 2 per cent treatments soaking 

 0.5 hour and 1 hour injured the seed about 20 per cent and gave 

 0.5 per cent, or less, of smutted heads. The seed soaked in a 2 

 per cent solution 1.5 hours gave 0.2 per cent smut; that soaked 



