346 



BULLETIN No. 189 



[June, 



The resistance of the rooted carnation plants to the fungus, as 

 shown in Table 4, was much more marked than with the cuttings. In 

 the few exceptions the fungus appeared able to infect the plants al- 

 most as readily as it had the cuttings. 



In 1914 this experiment was essentially repeated. Thirty young car- 

 nation plants (Rosette) were placed in each of a number of flats 

 (12x18 inches) . On April 26, after the plants were rooted, some of the 

 old infected sand from the inoculated flats used in Experiment la was 

 mixed with the soil in which the plaftts were growing. The experiment 

 was continued until June 1. The results, which are presented in 

 Table 4, were similar to those of Experiment 2. As in that experiment, 

 the plants in the check flat remained healthy, with the exception of 

 two that wilted and died from attacks of a Fusarium. 



TABLE 4. SUSCEPTIBILITY OF YOUNG ROOTED CARNATION PLANTS TO VARIOUS 

 STRAINS OF RHIZOCTONIA: EXPERIMENTS 2 AND 2A 



"Killed by Fusarium. 



