496 INSECT PESTS OF FARM, GARDEN AND ORCHARD 



Control. In the orchard the gypsy moth is readily controlled 

 by painting the egg masses with creosote in winter and by spraying 



FIG. 420. Egg masses of the gypsy moth on the trunk of an apple tree. 



the trees with arsenate of lead, 5 pounds per barrel, just as the 

 eggs are hatching in the spring. Where this is practiced there 

 is very little trouble in controlling it in orchards. Upon shade 

 and forest trees the problem is much more difficult and the reader 



