9 



The lime used in preparing lime-sulphur wash should be a calcium 

 lime instead of a magnesia lime. The latter is not desirable. 



Sulphur may be purchased in different forms, but the grades most 

 highly recommended are "flour" or "flowers" of sulphur. 



Self-boiled lime-sulphur washes may sometimes be used with suc- 

 cess, but they are not recommended for general use on account of the 

 extra expense involved. 1 



The addition of tar, potash lye, copperas, bluestone, or any other 

 substance to the regular lime-sulphur wash, does not appear to be neces- 

 sary or desirable on account of making the mixture more costly. 



Experiments conducted by individuals often result in valuable dis- 

 coveries. Fruit growers are urged to make experiments with any remedy 

 for the San Jose^ Scale, but to- do so on a conservative basis. 



The San Jose" Scale may be kept in control if all who have infested 

 orchards will apply the remedies recommended. It is better to spray 

 orchards from one end to the other when only a few trees are actually 

 found infested, and thereby prevent injury, rather than to delay th# 

 spraying until the orchards become badly infested by the scale. 



2-157 



