32 The Bulletin. 



not necessary to use the arsenate of lead in winter applications, but only 

 when there is fruit or foliage on the trees. 



This material is strong enough so that if used several times through 

 the season it will be quite eilective against the San Jose Scale. It gives 

 good protection from fungous diseases; the sulphur is quite effective 

 against sucking insects, such as plant lice and scale insects, and the 

 arsenate makes it effective against Codling Moth, Curculio, and leaf- 

 eating insects. 



AS TO SPRAYING PEARS. 



Pear orchards generally do not require so much spraying treatment 

 as apples, though their pests are quite similar. As a rule, two treatments 

 will stand them in good stead — first, the winter treatment (No. 1), (if 

 the orchard has scale), and, second, the treatment after the blossoms fall 

 (No. 3). But the pear grower must remember that the Fire Blight, 

 which is perhaps the one greatest enemy to the pear grower, is not 

 reached by any spraying applications. Some pear growers do not spray 

 at all except when special occasion arises. The Kieffer variety is gener- 

 ally more resistant to pests than the others, and it is seldom attacked by 

 San Jose Scale. 



SPRAYING FOR PEACHES AND PLUMS. 



Results from spraying peaches are less certain than with apples, but 

 with the mixtures and methods now in use they are more certain than 

 ever before. The control of San Jose Scale is relatively simple, the con- 

 trol of Curculio is reasonably certain, and the control of the rot is visually 

 successful by the sprayings here recommended. But if the season be 

 warm and rainy so as to Avash off the spray, the Curculio and rot may be 

 destructive despite our best efforts. 



A system of spraying treatments which will give good results in almost 

 every year is as follows : 



1. Winter Spraying. — Use Commercial Lime-sulphur at rate of 1 gal- 

 lon to 8 or 10 gallons water (see p. 19, or pp. 33 and 34) ; or, if you pre- 

 fer, you may make your own Lime-sulphur Wash at strength of 15 pounds 

 lime, 15 pounds sidphur, 50 gallons water. (See p. 19, or pp. 33 and 34.) 



This treatment is for the San Jose Scale, Avhich is very destructive in 

 many peach orchards of the State. If the scale is not present, then this 

 treatment can be omitted; but it has such a good general effect on the 

 tree that it ought to be used every two or three years anyway. If the 

 scale is present, it should be used every year. It helps against leaf-curl 

 and rot. 



2. A Week After Petals Fall. — Use the self -boiled Lime-sulphur Wash 

 (8 pounds lime, 8 pounds sulphur, 50 gallons ivater), and add 3 pounds 

 of Arsenate of Lead Paste. (See page 36.) 



Notice that here we recommend the self-boiled lime-sulphur, and not 

 the commercial material, and notice that 3 pounds of arsenate of lead 

 paste is used to the barrel (50 gallons). 



