284 CONTROLLING INSECTS AND DISEASES 



hibiting effects. It is not so strong a fungicide as lime-sulfur. 

 In very wet periods it is not recommended to replace lime- 

 sulfur. Wettable sulfurs are sold under many different trade 

 names. Purchase from a concern of established reputation. 



b : 5. Self-boiled lime-sulfur is effective in the control of 

 brown rot of the peach and other stone fruits, and is used for 

 this purpose by many growers in the peach regions from New 

 England southward. It is a very safe form of sulfur from 

 the standpoint of injury to fruit or foliage. As the name im- 

 plies, its preparation is due to the action of the lime when 

 slaked. The formula is 8-8-50: 8 pounds of burned lime, 

 8 pounds of sulfur, and 50 gallons of water. The active agent 

 is the sulfur; the lime reduces the danger of burning. 



b : 6. Dry mix or New Jersey dry mix is the name given to 

 a sulfur-lime mixture used as a substitute for self-boiled lime- 

 sulfur for stone fruits and also as a summer spray for apples 

 in some sections. It is easier to prepare than self-boiled 

 lime-sulfur. Dry mix is not so strong a fungicide as concen- 

 trated lime-sulfur and may not be advisable as an apple spray 

 for the early applications in some seasons. It does not cause the 

 burning that sometimes results from lime-sulfur. It is mixed 

 in the dry state and combined with water before using. In 

 order to make the mix wettable, calcium caseinate or pow- 

 dered skim milk is added to the sulfur and lime. The usual 

 formula is 8 pounds of sulfur, 4 pounds of hydrated lime 

 (finely ground finishing lime) , and % pound of either calcium 

 caseinate or powdered skim milk to 50 gallons of water. One- 

 half pound of bread flour may be substituted for the caseinate 

 or skim milk. 



Arsenate of lead or nicotine preparations may be used with 

 this material. For use with arsenate of lead, double the 

 amount of lime. 



b : 7. Other forms of sulfur as colloidal sulfur, barium 

 tetrasulfide, etc., are available, and still others are being per- 

 fected and put forward each season. All have some, many 

 have considerable, value. The grower will do well, however, 



