NO ONE METHOD for the control of the common mealybug 

 can be recommended under all conditions. The remedy 

 or remedies to be used will depend upon whether the trees 

 are in house lots or orchards, whether few or many, and the 

 infestation light or severe. In the case of severe infestation 

 it will depend also upon the kind of fruit. This insect infests 

 oranges of all varieties, grapefruit, lemons, and all other kinds 

 of citrus fruit grown in California, causing deformity, weak- 

 ening and dropping of much immature fruit, and the dis- 

 coloration and weakening of the rind of the fruit maturing. 



This bulletin discusses the three remedies which have been 

 widely used; namely, fumigation, spraying, and the artificial 

 spread of insect enemies, points out the sphere of usefulness 

 of each method, and shows, on pages 14-15, how they may be 

 combined so as to secure complete control. 



An important part of the procedure recommended is the 

 banding of trees with a mixture consisting of sulphur and a 

 sticky material used to protect trees from insects. This keeps 

 off the Argentine ant and other ants which attend and foster 

 the mealybug and hinder or prevent the good work of insect 

 enemies which otherwise might hold it in check. The method 

 of preparing the mixture and applying the bands is described 

 on pages 12-14. 



Where the insect enemies are few or absent, or where they 

 are themselves heavily parasitized, the trees should be sprayed 

 or fumigated, and colonies of effective enemies should be in- 

 troduced. 



