144 



Journal of AgricuUare, Victoria. [11 March, 191^ 



Numerous other types of nozzles exist; for example, the Eaveneau jet 

 shown in Fig. 4, which appears to have given a satisfactory spray. 



Orx^hard and Potato Sprays. 



Hitherto the use of copper sprays in Victoria has been limited to 

 orchardists and potato-growers. The problems which must be solved 



Fig. 5. — Vermorel's Sprayer for potatoes or low-growing vines (from Bourcart 

 "Insecticides, Fungicides, and Weed Killers.") 



Fig. 6. — Vigouroux Knapsack Sprayer, side and back view (after Viala). 



in order to protect these crops are, however, somewhat different to those 

 which confront vine-growers. It is evident that the spraying of a large 

 apple tree, for example, is a very different operation to that of a small, 

 more or less, trailing shrub, such as a vine. In the former case the 

 pump remains stationary alongside the tree until this has been com- 

 pletely spi'ayed, an operation Avhich may require several minutes; the 

 jirogress of the ])niii]) i-<, in fnct, essontinlly interniitlent. 



