268 APPENDIX. 



INSECTICIDES AND FUNGICIDES 

 (From Government Reports.) 

 Standard Bordeaux Mixture. 



Copper sulphate (bluestone) 6 pounds 



Lime 4 pounds 



Water to make 50 gallons 



This mixture often injures the foliage of the peach and the 

 Japanese plum, and sometimes russets the fruits of apples and 

 pears. « 



The 5-5-50 Bordeaux Mixture Formula. 



Copper sulphate 5 pounds 



Lime 5 pounds 



Water to make 50 gallons 



When this mixture is used there is less danger of scorching or 

 russeting the fruit than when the "Standard Mixture" is used. 



Peach Bordeaux Mixture. 



Copper sulphate 3 pounds 



Lime 9 pounds 



Water to make 50 gallons 



This form of bordeaux mixture is more harmless to the foliage 

 on account of the excess of lime. 



Dust Bordeaux Mixture. 



(1) Dissolve 4 pounds of copper sulphate in 4 gallons of v^rater. 



(2) Dissolve 4 pounds of lime in 4 gallons of water. 



(3) Prepare 60 pounds of slaked lime dust. The lime dust is 

 'best prepared by slowly sprinkling a small quantity of 



water over a heap of quicklime, using bareh' enough water 

 to cause the lime to crumble into a dust. 



The first two solutions should be poured together into a tub. 

 Allow the resulting precipitate to settle, decant off the liquid, 

 pour the wet mass of material into a double flour sack, and 

 squeeze out as much water as possible. Spread out the doughlike 

 mass in the sun to dry. Then crumble the material into a powder, 

 and screen the powder through a sieve of brass wire having 80 

 meshes to the inch. Finally mix the powder with the slaked 

 lime dust. 



