The Bulletin. 19 



LIME-SULPHUR WASH.* 



In using tliis material we have the choice between buying the ingredi- 

 ents and making it up ourselves, or of buying the ready-made solutions 

 which are prepared for use merely by mixing with cold water. The 

 lime-sulphur preparations are also very effective in checking fungous 

 diseases on trees, and they form a coating on the bark which serves as a 

 partial protection during part of the growing season. 



KEADY-MADE LIME-SULPHUR. 



(Or "Commercial" Lime-sulphur.) 



The commercial lime-sulphur washes can be bought ready-made from 

 the manufacturers or from agents and dealers in some of our larger 

 towns. Most of them are of about the same strength, and can be reduced 

 to proper strength for spraying merely by adding water. 



For winter use against San Jose Scale, use one gallon of commercial 

 lime-sulphur to eight or ten gallons of water. There is no need to have 

 the water even warm — cold water is all right. When reduced to the 

 strength recommended for scale, the ready-made wash, as we apply it to 

 the trees, costs about two to six cents per gallon, depending upon the 

 quantity of the material purchased. It has the advantage of requiring 

 no special preparation, there is no sediment or particles in it to clog the 

 spray pump, and it is therefore more quickly and easily used. For these 

 reasons many prefer to use it rather than to make the home-made wash. 



Some firms which manufacture ready-made lime-sulphur washes are : 



Thomsen Chemical Company, Baltimore, Md. 



Vreeland Chemical Company, 26 Dey St., Hudson Terminal Bldg., 

 New York, JST. Y. 



James A. Blanchard Company, ISTew York, N. Y. 



Niagara Sprayer Company, Middleport, IST. Y. 



Grasselli Chemical Company, Cleveland, Ohio. 



Bowker Insecticide Company, 43 Chatham St., Boston, Mass. 



Persons desiring to use the ready-made lime-sulphur should correspond 

 with these firms as to prices, exact quantity of water to use, etc. A num- 

 ber of firms in this State sell this material at retail. 



HOME-MADE LIME-SULPHUR WASH. 



Many growers prefer to make their own lime-sulphur wash ; therefore, 

 we give the formula and directions for it : 



Stone lime (unslaked) 15 pounds 



Sulphur (flowers) 15 pounds 



Water (to make) 50 gallons 



*In this Bulletin we do not give directions for preparing ttie "Home-made Concen- 

 trated Lime-sulphur." Growers who are interested in this may apply for Farmers' Bult. 

 650, U. S. Dept. Agr., Washington, D. C. (and refer to page 16). 



