49 



Self-boiled lime-sulfur is the best material for summer 

 spraying. It is made by putting 8 pounds of lime in a wooden 

 or iron container and slaking in the usual manner. When it 

 starts to boil, sift in 8 pounds of finely ground sulfur and con- 

 tinue boiling with constant stirring for a few minutes. At 

 the first appearance of a very slight reddish tinge, add cold 

 water to make up to 50 gallons and apply at once. Only the 

 best of lime should be used. If it does not start slaking 

 readily use hot water, but do not use any artificial heat to 

 cook the mixture. Better results follow if twice or four times 

 the amounts given are prepared in a single batch. 



For small operations a proprietary material known as 

 atomic sulfur is sometimes used with good results. 



No fixed spraying program will be the best under all con- 

 ditions and in all seasons, but the following will give generally 

 satisfactory results : — 



First Spraying. — Before the buds start to swell, commercial 

 lime-sulfur, 1 gallon to 9 gallons water, for San Jose scale 

 and leaf curl. Not needed if these pests do not occur. 



Second Spraying. — For the curculio, arsenate of lead, 3 

 pounds paste, or If pounds powder, to 50 gallons of water, 

 just as the shucks are falling, — a week or ten days after 

 blossoming. It is a safe thing to add 2 or 3 pounds freshly 

 slaked lime to prevent possible injury to the foliage. 



Third Spraying. — For curculio, brown rot and scab, self- 

 boiled lime-sulfur and arsenate of lead two weeks after second 

 spraying. Atomic sulfur may be used in place of the self- 

 boiled lime-sulfur, in which case it is best to add milk of lime 

 as in second spraying. 



Fourth Spraying. ■ — For brown rot, self-boiled lime-sulfur 

 four or five weeks before the fruit ripens. To be omitted with 

 Greensboro and other early varieties. Atomic sulfur may be 

 used as a substitute. 



Dusting has recently been recommended as a substitute for 

 liquid spraying and is fairly satisfactory for peaches. It is 

 generally most desirable for large growers where haste is im- 

 portant or when water is difficult to obtain. 



