52 FRUIT AND POTATO DISEASES 



The seed used was very scabby. Two rows of each plot were 

 planted with the seed untreated ; the other two rows, with seed 

 soaked in solution of corrosive sublimate, as above described. 



When dug, the potatoes showed the following result : The 

 figures indicate the per cent, of scabby ones. 



These results show the beneficial effect of treating the seed, 

 it do not fully bear out the stateme 

 the effect of the different fertilizers. 



but do not fully bear out the statement made above in regard to 



BORDEAUX MIXTURE 



The Bordeaux mixture continues to recommend itself as the 

 best all-round remedy for fungous diseases. It is efficient, it 

 is cheap, and it is easily prepared when one once gets the 

 " hang" of it and is willing to take pains. Directions should 

 be carefully followed by those who are unfamiliar with its 

 preparation. 



The ingredients of the Bordeaux mixture are blue vitriol, 

 lime, and water. The ingredient which kills the fungus is the 

 blue vitriol. The purpose of the lime is to prevent the injury 

 to the foliage which a simple solution of blue vitriol would 

 cause. 



The proportion of the ingredients may be varied considera- 

 bly. The formula which was recommended in Bulletin 27 of 

 this Station still seems to us a satisfactory one, namely : 



Blue vitriol ...... i lb. 



Lime, fresh . . . . . • 70 " 



Water 10 gals. 



As the quantity most frequently prepared would be a barrel, 

 the formula may be given as follows : 



Blue vitriol ... 5 lbs. 



Lime .... 3J^ lbs. 



Water .... i bbl. (45 to 50 gals.) 



