34 The Bulletin. 



For winter use against San Jose Scale use 1 gallon of commercial lime- 

 sulphur to 8 or 10 gallons of water. 



For use in spring and summer on foliage and fruit of apples, use only 

 1% gallons of commercial lime-sulphur to 50 gallons (one barrel) of 

 water. 



Arsenate of lead paste may be added to the lime-sulphur wash and 

 should be used at rate of about 3 pounds to the barrel. If the dry pow- 

 dered form of arsenate of lead is used, use only one-half the amount, by 

 weight. It must be remembered that the lime-sulphur alone, while ex- 

 cellent against fungous diseases and some insects, is not effective against 

 Codling Moth and Curculio; for them the poison (arsenate of lead) must 

 be added. Dip out a pailful of the liquid and stir the arsenate in it until 

 it is thoroughly dissolved into the solution, then pour back and stir. 



* 



HOME-MADE LIME-SULPHUR WASH. 



Many growers still prefer to make their own lime-sulphur wash ; there- 

 fore, we give the formula and directions for it : 



Stone lime (unslaked) 15 pounds. 



Sulphur 15 pounds. 



Water (to make) 50 gallons. 



Heat from 4 to 6 gallons of water to boiling over fire in large iron or 

 brass kettle. Mix the sulphur with enough hot water to make a thin 

 paste and pour it into the kettle with the hot water. ISTow add the lime, 

 part at a time, and as it slakes dash in a little cold water as needed, to 

 keep it from boiling over or to keep it from becoming dry. Keep the fire 

 going and stir the mixture frequently. As the slaking ceases, keep it 

 boiling from the fire for half an hour longer, then dilute with water 

 (cold is all right) to make 50 gallons; strain through a fine wire screen 

 or cloth to remove all sediment, and spray. 



This wash, which contains 15 pounds sulphur to the barrel, is only for 

 use in winter when the trees are dormant. It is an excellent remedy for 

 San Jose Scale, but all treatments with it should be finished before the 

 buds open in spring. The later the treatment is made the better, just so 

 the buds are not open. 



BORDEAUX MIXTURE. 



(Poisoned ivith Arsenate of Lead.) 



Let it be plainly understood that the exact position that Bordeaux 

 Mixture should take in orchard spraying is now open to some question. 

 It is pretty well agreed that it is better not to use it at all on peaches, 

 and on apples only after the young fruits are well formed- — say, about 1 

 inch in diameter or larger. 



*See note at bottom of page 19 for reference to the Home-made Concentrated Lime- 

 sulphur. 



