322 Report of the Horticultural Department of the 



INTRODUCTION. 



The horticultural industries of the State have been placed on a 

 more permanent basis than they were a quarter of a century ago, 

 through the introduction of modern means and methods of fighting 

 injurious insects and plant diseases. This Station has all along taken 

 an active part in the investigations in this Hne, and has published 

 from time to time information concerning various phases of the sub- 

 ject. Among other things much time has been given to the general 

 study of the preparation of spray mixtures and of the adaptability 

 of various kinds of spraying apparatus to the purposes for which 

 they are intended. This bulletin embodies the results of this study. 

 At the same time much other information has been compiled from 

 various sources, which has however been critically reviewed and 

 interpreted in the light of experience at this Station. Bulletin 170 

 treats of diseases and insects injurious to fruits, describing them and 

 recommending the best known treatment for each. The bulletin 

 now offered, on spray mixtures and spraying machinery, gives in- 

 formation as to the fungicides and insecticides which are used in 

 spraying, their preparation, and their application. It aims to give 

 an up-to-date account of these subjects. It is suggested that those 

 who are looking to this Station for information of this kind keep 

 this bulletin for reference. The following topics are treated in the 

 order named: 



Fungicides and insecticides used in spraying. 



The best kind of a spray. 



The parts of a spraying outfit, as pump, nozzle, agitator, tank, 

 etc. 



The various kinds of spraying outfits, as knapsack, barrel and 

 steam power outfits. 



