The Bulletin, 17 



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. Made according to the above directions, 

 this wash, as we apply it to the trees, costs about 1 1-2 to 3 cents per 

 gallon, depending upon the quantities of the ingredients purchased. It 

 has the advantage of being cheaper than the ready-made. It also makes 

 a whiter coating on the twigs, so that missed portions can be more read- 

 ily noticed (and corrected), and for these reasons many prefer it, though 

 it requires the trouble of boiling, straining, etc., which in the minds of 

 many offsets the cheaper cost. 



SOLUBLE OILS. 



The soluble oils share popularity with the lime-sulphur prepara- 

 tions as remedies for the San Jose Scale. They are so prepared that 

 they mix readily with either hot or cold water, and are therefore very 

 convenient to use. They will penetrate into cracks and crevices even 

 better than the lime-sulphur mixtures, and they corrode and rust the 

 spray pumps less, but they do not have so good an effect in checking 

 fungous diseases. 



The soluble oils are usually used in winter for San Jose Scale at the 

 rate of one gallon to ten gallons of water. 



The two firms which do most trade in this State in the soluble oil 

 preparations are: 



B. G. Pratt Co 50 Church St., New York City, 



who make a material called "Scalecide." 

 Thomsen Chemical Co Baltimore, Md. 



''Orchard Brand Soluble Oil." 



If interested correspond direct with them as to all details, 



OTHER REMEDIES, 



The other remedies referred to can be discussed briefly : 

 Whale Oil Soap. — The brand that is almost wholly depended upon is 

 Good's Caustic Potash Whale Oil Soap, No, 3, made and sold by Jas, 

 Good, 939 N, Front St,, Philadelphia, Pa, If interested, correspond 

 direct in regard to prices, method of using, etc. 



Kerosene Emulsion. — This was the standard remedy in the eastern 

 States before the lime-sulphur wash came into use, and is still used for 

 many other insects. Its disadvantage is that it is quite troublesome to 

 prepare and if at all carelessly used is liable to injure the trees. For 

 use in winter on peach and plum, we advise that it be used not stronger 

 than 15 per cent oil. For use in winter on apple and pear it may be 

 used as strong as 25 per cent. Full directions for preparing this wash 

 are given on page 32, 



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