11 March, 191S.] 



Yin ei/ard Spnii/ing. 



151 



our -wider roAvs, and tlie methods of training usually followed permit the 

 passage of outfits on Avheels at any time. They might possibly prove 

 of service, however, in yineyards, the soil of which, in a very wet 

 season^ becomes too soft for wheeled vehicles. 



HoRSE-DRAWiSr SpRAY PuMPS. 



In large spray pumps dravni by horses we no doubt have the class 

 of machine which will prove most suitable under Australian conditions, 

 especially for the treatment of large areas. 



The simplest form of traction spray outfit would consist of a cart, or 

 other suitable vehicle, bearing the reservoir of spray material and the 

 pump serving to raise the pressure to the required point ; long rubber 

 hoses convey this to the nozzles, each of which is directed by a "workman. 

 This is the type in general use in Victorian orchards. Some of our 

 vineyards have already been sprayed this season in such a manner. 

 Four rows were sprayed at a time, two on either side of the cart. The 



Fig. 16. — Perras modern wheel-driven Traction Spray Pump, the nozzles being 

 arranged to treat two rows of vines (on both sides) simultaneously. 



vines were treated in sets of twelve at a time — three in each row — after 

 which the cart moved on a few yards for the treatment of a fresh lot. 



In this way, the spray can be thoroughly and efficiently applied, but 

 the work entails too much labour, since every nozzle requires a man to 

 direct it, in addition to the one who works the pump and drives the 

 horse. It is true that the work is much less laborious for the men 

 directing the nozzles than knapsack spraying ; it has thus a better chance 

 of being properly carried out. A better pressure can also be maintained, 

 thus insuring a more efficient spray, and one which will treat rather 

 more vines, nevertheless, the number of vines which can be treated with 

 each nozzle is not much greater than in the case of the knapsack 

 machine. 



"What is really required for the economical spraying of our vineyards 

 is something more after the style of the continuous acting potato sprayer 

 (Fig. 5). In France, machines of this type have long been in general 

 use, especially in large vineyards. One very similar to Vermorel's 

 earlier traction sprayer (Fig. 15) Avas advertised as far back as 1894, 



