132 



EXPERIMENT STATION. 



[Jan. 



and when the observations were taken showed no Alternaria or 

 Cladosporium, the whole plot presenting a good appearance. 

 This mixture adhered to the leaves the best of any and pos- 

 sessed the advantage of not coloring the plants to any great 

 extent. 



Plot 5 was sprayed with copper phosphate and " Disparene," 

 and was in very poor condition when examined. The whole 

 plot was badly affected with both Alternaria and Cladosporium, 

 and little good seemed to result from spraying with this mix- 

 ture. 



The following table shows the relative appearance of the 

 sections of each plot : — 



Table III. — Showing the Relative Difference in the Condition of Each 

 Plot, Sept. 16, 1907. 



Of the different spraying treatments the copper phosphate 

 shows the largest percentage of dj T ing plants, and, as already 

 stated, this plot was the most severely affected with fungi. The 

 other plots which showed less infection were treated with 

 Bordeaux mixture in some form of combination. The applica- 

 tion of Bordeaux mixture is known to prolong the maturity of 

 crops, and no doubt the difference in the maturity of the plots 

 treated with the Bordeaux mixture and those treated with cop- 

 per phosphate is due in part to the tonic effect of the Bordeaux. 

 Too much reliance, however, cannot be placed upon these con- 

 clusions as they represent only one season's work, and the 

 following summary must be interpreted with caution. 



