New York Agricultural Experiment Station. 323 



PREPARATIONS FOR SPRAY MIXTURES. 

 In farm and garden practice various spray mixtures are used 

 against injurious insects and fungi. Those materials which are used 

 to destroy insects are insecticides; those used against the fungi 

 are fungicides. Those which are noticed in this bulletin are named 

 in the following list: 



Fungicides. Insecticides. 



Bordeaux mixture Schcele's green 



Soda bordeaux Paris green 



Soda-lime bordeaux London purple 



Bordeaux dust Hellebore 



Copper sulphate Arsenite of lime 



Eau celeste and soap Arsenite of soda 



Ammoniacal copper carbonate and soap Arsenate of lead 



Potassium sulphide Arsenite of lead 



Iron sulphate and sulphuric acid Whale-oil soap 



Formalin Resin-lime soap 



Corrosive sublimate (Mercuric chloride) Lime-sulphur-salt wash 



Lime-sulphur-soda wash 

 Kerosene emulsion 

 Crude petroleum and kerosene 

 Hydrocyanic acid gas 

 Tobacco 

 Pyrethrum 

 Carbon bisulphide 



FUNGICIDES. 

 BORDEAUX MIXTURE. 



Bordeaux mixture is, and will remain, the most important fungi- 

 cide for general use against fungus diseases of fruits and farm and 

 garden crops, such as apple scab, plimi leaf spot, potato mildew, 

 cucumber mildew, etc. There is such a constant demand for informa- 

 tion as to how best to make and use bordeaux mixture that this sub- 

 ject is treated more fully than any other in the bulletin. 



The essential ingredients for making bordeaux mixture are freshly 

 slaked lime and copper sulphate solution. The fungicidal value lies 

 in the copper. 



