Journal of Agriculture , Victoria. 



[lo Feb.. 1911. 



plants by rain. The freshly made mixture should always be used. Sul- 

 phate of copper is poisonous, therefore the vessels in which the mixture has 

 been prepared should not be used for holding food or water for con- 

 sumption. 



Application of the Mixture. 



Spraying should be done before any signs of disease have appeared. 

 It is desirable to apply the first dressing when the plants are about 6 

 inches high, although leaves are sometimes blighted as soon as they appear 

 above ground. A second spraying should be given when the foliage is well 

 developed, and if the season is a wet one, a third dressing may be advis- 

 able. The foliage should be completely covered by the spray in the form 

 of a fine mist, and this is best done when a sufficiently high pressure is 

 maintained in the sprayer. Spraying should be done during dry weather 

 and suspended when it is raining. If heavy rain has washed the mixture 

 largely off soon after spraying, then it should be repeated. 



forbes-chisholm horse-power sprayer. 



It is essential to success that the spraving material is kept intimately 

 mixed by constant agitation during the operation. 



Quantity per Acre and Cost of Materials. 



It is found in Ireland tliat an average crop with fully developed foliage 

 requires about 100 gallons per acre, and with a small amount of foliage 

 the quantity would be less. The quantity will vary, but the main point to 

 be attended to is to use sufficient to completely cover the foliage without 

 drenching the ground. 



At the present market price of the articles when bought in quantity, the 

 cost of the raw materials of spraying an acre would be as follows : — 



Sulphate of Copper, 20 ll)s. at 2d. Ofd. per lb. = 4s. 7d. 

 Washing Soda, 25 lbs. at OSd. per lb. ... =^ Is. .5d. 



Total 



6s. Od. 



