21 



Poirilrrii Mililcic of Grape. Apple. Peach and Rose. — Apply first just as 

 linds lire bursting, and continue at intervals throughout the season. Each 

 fruit-grower must demonstrate for himself just how many sprayings he needs, 

 for this is governed largely by seasons, location and iirevaleuce of diseases the 

 previ<.>us year. 



Peneh-lcaf Curl. — Apply just as buds are bursting, and two or three more 

 times through the early season. Instead of Bordeaux, the lime-sulphur salt 

 spray can be used for the fir.st siiraying with excellent effect. 



Apple Canker or Aiithraeiione. — I'rofessor Cordley, of the Oregon Station, 

 says: — "Spray as soon as iiossible after crop is gathered, and ri'iieat in two 

 weeks." For all spraying, in the dormant season or fall, wliether f<ir this 

 disease or others, best results arc obtained by increasing the amounts uf jxitli 

 bluestone and lime to six pounds. 



Copper Siilpliate Solution : — 



Copper sulphate 2 or 3 lt)S. 



Water 50 gallons. 



This sjira.v is nmch endorsed by experiment stations both Eastern and 

 Western, to take the place of Bordeaux during the dormant season. Though 

 of equal etticiency with Bordeaux, and more easily made and applied, it is of 

 so corrosive a nature when coming in contact with any iron or steel parts as 

 to make its use very disagreeal.ile. Iron nuts about the waggon or pump 

 becdiiie in a few days so soldered to the bolts as to make it next to impossible 

 to loosen them. Metal parts of the harness, and even tools employed, are soon 

 rendered unsightly or even spoiled. Copper sulphate solution renders its best 

 service in the treatment of grain, though formalin is largely dis]>lacing it. 



Xo. 10. — Annnoniacal Copper Carbonate: — 



Copper corbonate 5 omices. 



Ammonia (ammonia water of commerce) 3 or 4 pints. 



Water 50 gallons. 



Dissolve the copper carbimate in the ammonia and dilute with water to 

 50 gallons. The ct)ncentrated solution should l)e poured into the water. Keep 

 the anmionia in glass or stone jar tightly corked. 



Home ilanufaeturc of Copper Carbonate. — As the precipitated form of car- 

 lion;ite of copjicr is not always obtainable, the following directions are given 

 l\ir its jireparation : — 



In a ve.ssel capable of holding two or three gallons, dissolve I'o IT>s, of 

 copper sulphate in 4 pints hot water. In another vessel di,ssolve 1% lbs. sal 

 soda (washing soda) in 4 pints hot water. When both are dissolved, pour the 

 second solution into the first and stir briskly. When effervescence ceases, fill 

 the vessel with water and stir tlan-oughly. Allow this to stand 5 or hours, 

 when a precipitate or sediment will have settled at the bottom. Now pour off 

 the clear liquid without disturbing this sediment, fill up the ve.ssel again with 

 water and stir as before, then allow this to stand until the sediment has again 

 settled, and then pour off the clear liquid carefully as before ; the residue or 

 sediment is carbonate of copper, and from the quantities given there should be 

 formed 12 ounces weight. Instead of drying this (which is a slovs' process). 



