56 MAINS AGRICULTURAL EXPERIMENT STATION. IOX)I. 



YIELD OF POTATOES FROM ADJOINING -PRAYED ANP OlffSPRAYED -- 



ACRE PLOT-. 



Yield of Potatoes. 





PoaDds per 1-20 Acre. Bushels per Acre. 





| 



30 



z 



1 



P i s 



2 ao 







333 

 957 

 330 

 738 



96 

 95 



-4 

 90 



101 



184 

 319 

 110 



24*5 



3-2 

 32 

 31 

 30 



34 





•>7 



READY" MADE VS. FRESHLY PREPARED BORDEAUX MIXTURE. 



Effectiveness. The Boxal and Lion brand Bordeaux mixture, 

 in the amounts used in these experiments, contained less copper 

 than the regular Bordeaux mixture. The Adler's Bordeaux 

 mixture, however, was applied so that it was of the same 

 strength as the freshly prepared Bordeaux mixture here used. 

 Both as indicated by freedom of vines from blight and tubers 

 from rot, the ready made Bordeaux (Adler's) apparently was as 

 effective as the freshly made. The Boxal and Lion brand Bor- 

 deaux mixture was not quite as effective in preventing blight 

 and subsequent rot of the tubers as the freshly prepared mix- 

 ture. This may be explained by the fact that as used, these 

 goods did not carry as much copper as the regular Bordeaux 

 mixture. 



In these experiments Bordeaux mixture which had been made 

 for weeks was as effective in preventing blight and subsequent 

 rot as the freshly prepared. Boxal and Blanchard's Lion brand 

 Bordeaux mixture protected the plants and the tubers from de- 

 struction bv blight and rot. While in these experiments they 

 were not as effective as the regular Bordeaux mixtures, they can 

 under most conditions be depended upon to protect the potato 

 plant. They would probably be more effective if used in stronger 

 mixtures. 



"The Ready for Use" Feature. The claim is justly made by 

 the manufacturers that the prepared Bordeaux mixtures are 



