Spray Calendar. 127 



for grape antliracnose, the dormant vines being treated by means of 

 sponges or bruslies, but it should be applied with caution. 



Potassium Sulfide Solution. 



Potassium sulfide (Liver of sulfur) -J-l oz. 



Water 1 gallon 



This preparation loses its strength upon standing, and should 



therefore be made immediately before using. Particularly valuable 



for surface mildews. 



Hellebore. 



Fresh white hellebore 1 ounce 



Water 3 gallons 



Apply when thoroughly mixed. This poison is not so energetic 

 cs the arsenites, and may be used a short time before the sprayed 

 parts mature. For insects which chew. 



Kerosene Emulsion. 



Hard soap -J pound 



Boiling soft water 1 gallon 



Kerosene . . . , .... 2 gallons 



Dissolve the soap in the water, add the kerosene, and chnrn with 

 a pump for 5 to 10 minutes. Dilute 4 to 25 times before applying. 

 Use strong emulsion for all scale insects. For such insects as plant 

 lice, mealy bugs, red spider, thrips, weaker preparations will prove 

 effectiv^e. Cabbage worms, currant worms and all insects which 

 have soft bodies can also be successfully treated. It is advisable to 

 make tlie emulsion shortly before it is nsed. 



Kerosene and Water (suggested for San Jose scale — see nnder 

 Apple) may be used in all cases where kerosene emulsion is men- 

 tioned. Dilute to the strength recommended in each particular case. 

 It must be applied with a pump having a kerosene attachment. 



Tobacco Water. 



This solution may be prepared by placing tobacco stems in a 

 water-tight vessel, and then covering them with hot water. Allow 

 to stand several hours, dilute the liquor from 3 to 5 times, and 

 apply. For soft bodied insects. 



