APPLE GROWING 



alone as a poison lime should be added. Both 

 these arsenlcals should be thoroughly wet up 

 by stirring in a smaller receptacle before they 

 are put into the spray tank, in order to get 

 them in as complete suspension as possible. 

 They may be used in the same mixture with 

 Bordeaux or lime sulphur. 



Contact Sprays. — Four compounds are 

 used as contact sprays in combating sucking in- 

 sects, namely, lime sulphur, soaps such as whale 

 oil soap, kerosene emulsion, and tobacco extract. 

 Of these lime sulphur is the most used and for 

 winter spraying is probably the best. This 

 preparation is made by boiling together for one 

 hour or until they unite, twenty pounds of quick 

 lime, fifteen pounds of flower of sulphur, and 

 fifty gallons of water. Although the home 

 made mixture is much cheaper than the com- 

 mercial form which may be purchased on the 

 market, many people prefer the latter because 

 of the inconvenience and trouble of preparing 

 the mixture, although there is nothing diflicult 

 about it. 



This contact spray is used chiefly for the San 

 Jose scale and the blister mite, and In order to 

 control these must be applied strong on the dor- 

 mant wood. The strength necessary will vary 



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