APPENDIX B 



INSECTICIDES AND FUNGICIDES 



Bordeaux Mixture. This is the fungicide used every- 

 where to reduce damage to fruits and vegetables caused 

 by fungi. The proportions in which the substances 

 are mixed are but rarely varied from the following: 



Copper Sulfate, or Bluestone 4 pounds 



Fresh lime 4 " 



Add water to make about 50 gallons 



In preparing, use two half-barrels, one for copper 

 sulfate and one for lime. Fig. 178. The copper sulfate 

 should be pulverized and put in a coarse burlap sack 

 and suspended in water until dissolved. Use wooden 

 vessels only for copper 

 sulfate. The fresh lime 

 should be dissolved in 

 another vessel, using 

 only a small amount of 

 water at first, adding 

 more as the slaking pro- 

 gresses. Care should be 

 taken to see that the 

 lime is stirred into a 

 very thin batter, free 

 from even small lumps. 

 It is advisable to strain through a burlap sack, or a 

 copper strainer with eighteen or twenty meshes to the 

 inch. Dilute the milk of lime and the solution of copper 

 sulfate up to about twenty-five gallons and mix. Do not 



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Fig. 178. Making Bordeaux mixture. 



