COST OF FUXGICIDE MATERIALS 



21 



will take up. •One-fourth of a pound of lime to a barrel 

 of water is as much as is required for the purpose of pre- 

 venting the injury to the foliage Avhich the Paris green 

 might cause. A convenient method is to put several 

 pounds of lime in a barrel, and then fill with water ; 

 after stirring vigorously allow to settle, when the clear 

 water may be used. The barrel may be filled with water 

 each time before going to the orchard, and allowed to 

 stand while gone.*^ Only suflBcient ammonia to dissolve 

 the copper carbonate and Paris green should be used, 

 and no more lime than directed. 



Care must be taken in combining the arsenites with 

 other fungicide solutions, as one is liable thus to pro- 

 duce a compound very injurious to foliage. Paris green 

 or London purple added to simple solutions of copper 

 sulphate, or to ammonia compounds without lime, in- 

 jures foliage vastly more than in simple water mixture. 



COST OF FUXGICIDE MATERIALS 



The approximate wholesale and retail price of the 

 more important substances used for fungicides is indi- 

 cated below : 







Retail. 





Per lb. 



Per lb. 



Ammonia (22- Baume) 



..$0.07 



S0.20 



Carbonate of copper (Precipitated). 



. . .40 



.60 



Carbonate of ammonia 



.. .14 



.30 





.15 



.25 



Lime, per barrel (300 ponncls) 



. 1.65 







, . .04 



.10 



Soda livpo-siilpliite 



. .06 



.15 





.0114 



.05 



Sulphate of copper (Powdered) 



. . .07 to .09 



.12 to 15 



Sulphate of copper (;Crystals) 



.. .05 



.10 





. , .03 



.10 



THE APPLICATION OF FUNGICIDES 



Fungicides may be applied to plants, either in the 

 form of a dry powder or a liquid solution. In the for- 

 mer case they are usually most easily handled by means 

 of a powder bellows — such as Leggett's powder gun — 



