EXPERIMENT STATION BULLETINS. ^ 517 



Lump lime 20 pounds. 



Sulphur (flour) 15 pounds. 



Water (hot) to make 50 gallons. 



The lime is slaked with a small amount of water (hot if lime is 

 sluggish) and the sulphur is added, fifteen or twenty gallons of water 

 are then added, and the mixture boiled. (It should take three-quarters 

 of an hour or an hour of good boiling Avith frequent stirring.) TVTien 

 done the liquid should be amber colored and fairly clear. Strain, 

 dilute with water (hot is preferable) to make (up to) 50 gallons, and 

 apply warm, through a coarse nozzle. 



If small quantities are required, use an iron kettle to boil it in. If 

 larger quantities are to be used, live steam is preferable for boiling pur- 

 poses, either in a tank or in barrels. 



Applied just before the buds swell, it coats the branches in such a 

 way as partially to hinder from settling down, such pests as the oyster- 

 shell, scurfy scale, some aphids, and other insects. 



HOME MADE CONCENTRATED LIME-SULPHUR AVASH, 



Growers, having cooking plants, can make the lime-sulphur wash in a 

 "concentrated" solution. This may be an economy of time, as large 

 quantities can be made early in the season and stored until needed. 



It is difficult to make this Avash of uniform strength. For this reason, 

 every batch that is made must be tested Avith a hydrometer and diluted 

 accordingly. 



The difficulty of getting a solution of uniform strength, apparently 

 depends on the lime, which varies in composition and strength. Lime 

 that contains more than five per cent of magnesium oxide and less than 

 90 per cent of calcium oxide does not combine in the cooking with the 

 sulphur in a Avay to make a good mixture. Special "spraying lime" is 

 noAV on the market. 



There are several ways of combining the lime and sulphur, but always 

 there are two parts, by Aveight, of sulphur to one of stone lime. The 

 following three formulas are in common use: 



Stone lime 75 lbs. ] f 60 lbs. ] f 40 lbs. 



Sulphur 150 " [ or ^ 120 " \ or <{ SOlbs. 



Water 50 gal. J [ 50 gal. J [ 50 gal. 



The lime is slaked to a thin paste and tlie sulphur is added. Boil 

 for one hour and stir frequently. Water enough should be added so 

 that there will be fifty gallons at the end of the boiling. 



After it is cooked, if not to be used at once, it should be strained into 

 a barrel which should be air tight, as exposure to the air causes the 

 sulphur compounds to lose their value for spraying purposes. Each lot 

 that is cooked should be tested with a hydrometer when cooled and di- 

 luted according to the dilution table when applied : 



COMMERCIAL CONCENTRATED LIME-SULPHUR WASH. 



There are several brands of the "commercial" concentrated lime-sul- 

 phur iolutiou now upon the market. The use of these instead of the 



