INSECTICIDES AND FUNGICIDES 



1015 



Dissolve the Milestone in 25 gallons of water, slake the lime separately, 

 and add water to make 25 gallons; then pour the two, bucket by bucket, 

 into a third barrel so as to mix thoroughly. For peach and plum, which are 

 more tender than apple and grape, the above formula may be changed to 

 the following: 



Bluestone 2.5 pounds 



Fresh lime 2.5 pounds 



Water 50 gallons 



These are the best preparations known for mildews, rots, scabs, smuts 

 and the like, and where one is dealing with a fungous trouble and is uncer- 

 tain as to how to proceed, the chances are that he will accomplish as much 



Efficiency of Bordeaux Mixture on Potatoe 

 Not Sprayed. 1 



One Row 



by using this preparation as with anything that could be recommended. 

 It is the best general-purpose fungicide we have at present. 



Copperas, or Iron Sulphate. — While this is less often used than blue- 

 stone, yet it has decided fungicide and antiseptic value, and because of its 

 cheapness may sometimes be found serviceable. As now used it generally 

 comes to the market as a waste product in the manufacture of steel wire, and 

 may be bought for a cent or less per pound. 



Formalin, or Formaldehyde. — This very valuable preservative and 

 antiseptic has been much used of late as a remedy for potato scab and to 

 some extent for wheat smut. It is sold as a fluid containing forty per cent 

 of formalin. In this condition it is very acrid, and gives off fumeS that 

 affect the eyes and nostrils unpleasantly. Used on the hands, it quickly 

 destroys the outer skin. It cannot, therefore, be employed except when 



1 Courtesy of New York Agricultural Experiment Station, Geneva, N. Y. 



