INSECT CONTROL 333 



water to the affected roots and destroy or repel the 

 aphides. 



Lime-sulphur Solution. This is now the leading remedy 

 for the San Jose scale, as well as the pear leaf blister-mite, 

 and has been found to kill a large percentage of aphis eggs. 

 It is also an excellent fungicide, and spring applications just 

 before the buds open are very effective in killing out the 

 wintering spores of various fungous diseases. 



The usual formula is, unslaked stone lime, 20 pounds; 

 flowers (or flour) of sulphur, 15 pounds, water to make 50 

 gallons. Stir up enough water with the sulphur to make a 

 thick paste. Slake the lime in the vessel in which it is to be 

 cooked with a small quantity of hot water. Then add the 

 sulphur paste to the slaking lime. Add 10 or 15 gallons of 

 water and boil for forty-five minutes. The mixture may 

 then be diluted to make a barrel of 45 or 50 gallons, straining 

 it carefully into the spray barrel or tank. A large iron kettle 

 or hog-scalder may be used for boiling the wash, or where 

 steam can be made available a steam pipe may be run into 

 several barrels and the wash boiled in them. Such barrels 

 may well be placed upon a platform so that the wash may 

 be drawn from them directly into the spray-tank. The 

 leading manufacturers and dealers in insecticides are now 

 selling concentrated lime-sulphur solution which is all ready 

 for use by merely diluting to the desired strength. In many 

 communities a central plant makes the wash and can sell it 

 with a fair profit at a low rate. 



Home-made Concentrated Lime-sulphur. In recent years 

 many large growers have been making their own concen- 

 trated lime-sulphur solution, and where the quantity to be 

 used warrants, a considerable saving may be effected. The 

 usual formula calls for 50 pounds of fresh stone lime, 100 

 pounds of commercial ground sulphur and water sufficient 



