30 



SPRAYING CROPS 



The remarks on page 26 concerning late applications 

 of the Bordeaux mixture are equally applicable to 

 this combination. 



As already stated on page 25, the arsenate of 

 lead seems even better than Paris green. Add to 

 Bordeaux mixture at the rate of 2 pounds to 50 gallons. 



Arsenites and Copper Carbonate — The Ohio 

 Experiment Station recommends the following com- 

 bination : Paris green 2 ounces, carbonate of copper 

 2 ounces, dissolve in 3 pints of ammonia, add ^ 

 pound lime and i barrel of water. It is advised that 

 this be substituted for the arsenite and Bordeaux com- 

 bination for the later sprayings of apples, pears, 

 plums, etc, so as to avoid the lime coating on the fruit. 



Care must be taken in combining the arsenites 

 with other fungicide solutions, as one is liable thus 

 to produce a compound very injurious to foliage. 

 Paris green or London purple added to simple solu- 

 tions of copper sulphate, or to ammonia compounds 

 without lime, injures foliage vastly more than in 

 simple water mixture. 



COST OF SPRAYING MATERIALS 



The average retail and wholesale prices "^of the 

 various materials used in the spraying mixtures above 

 described are approximately indicated in the following 

 table : 





WHOLESALE 



Per lb 



RETAIL 



Per lb 



A^mmonia (22 degrees Baume) 



. . . , $0 07 



$0 25 



Carbonate of copper (precipitated) 



. • . . 35 



60 





. . . . 12 



30 



London purple 



. . . . 06-07 



10-15 



Paris green 



. ... 15 



25 



Pvrethrum 



. . . . 22-40 



40-70 



Soda hyposulphite 



06 



15 



Salsoda 



. ... 01^ 



05 





05-07 



10-15 



White hellebore . . . 



12 



25 



Whale-oil soap 



08-10 



15-20 



