130 



THE MONTHLY BULLETIN. 



Distribution. — Occurs in every part of the entire State and has 

 become a very common pest. 



Food Plants. — Practically all of the deciduous fruit trees are 

 attacked, as well as shrubs, ornamentals, etc. The following food 



Fig. 113. — The pernicious or San Jose scale 

 on peach twig. (After Quaintance. ) 



plants are recorded in California: quince, walnut, almond, cherry, 

 plum, prune, peach, pear, apple, sand pear, currant, rose, raspberry, 

 hawthorn, privet, poplar, willow, osage orange, elm. 



Control. — The application of commercial lime-sulphur sjiray ( 1 to 9 

 or 1 to 11 of water) during the dormant season in the winter. The 

 lime-sulphur should be applied as a driving spray at a pressure of 

 from 150 to 200 pounds, care being taken to thoroughly cover every 

 portion of the tree. 



