STATE POMOLOGICAL SOCIETY. 59 



Concentrated stock solutions, properly made and stored, have 

 been found entirely satisfactory. Does it pay, then, for the 

 orchardist to make his own spray? That depends largely up- 

 on the amount of spray to be used. The commercial preparation 

 is a convenience, requiring nothing but a knowledge of its 

 density before diluting with water. On the other hand these 

 proprietary sprays cost from three to four times as much as 

 an equal volume of home made material. The home-boiled 

 concentrated stock solution if properly made and barreled, can 

 be cooked in winter and stored for future use. It is largely a 

 question of the man and his willingness to save money by using 

 his own time, labor and care. Lime-sulphur sprays must be 

 correctly made and correctly diluted when using. This point 

 must be emphasized. 



Another advantage of concentrated lime-sulphur solutions, 

 either commercial or home made, over other fungicides, is that 

 the same preparations are used as insecticides on dormant trees. 

 These lime-sulphur sprays, used in greater strengths, are ef- 

 fective in controllng sucking insects which cannot be fought 

 with arsenicals. At such strengths they are used when the 

 leaves are ofif the trees and no injury to the latter results. 



DIRECTIONS FOR MAKING SPRAYS. 



The materials needed for making either of the home made 

 sprays are good stone lime, free from grit or dirt, containing 

 the least possible amount of magnesium, and sulphur. Do not 

 use a magnesium lime. Sulphur may be either in the form of 

 flowers of sulphur or sulphur flour. 



SELF-BOILED LIME-SULPHUR. 



The directions for making this so-called self-boiled prepara- 

 tion are adapted from several publications of Mr. W. M. Scott 

 of the Bureau of Plant Industry, United States Department of 

 Agriculture, who first devised and used it. 



Use 8 lbs. of sulphur and 8 lbs. of good stone lime to 50 gal- 

 lons of water. The amount of lime and sulphur may be multi- 

 plied by any amount, provided the volume of water finally 

 used is likewise increased. Thus, 40 lbs. of lime can be used 

 with 40 lbs. of sulphur and diluted at the end of the process 

 to a total of 250 gallons of water. 



