210 INSECT PESTS OF FARM, GARDEN AND ORCHARD 



posed. In some localities damage is severe and control measures 

 must be employed. When this is necessary the following prac- 



FIG. 175. Map showing distribution of the alfalfa 

 caterpillar. (After Wildermuth, 1. c.) 



tices are advisable: Cut the crop early and close to the ground; 

 pasture closely where possible; disk badly infested fields and 



FIG. 176. Map showing distribution of the green clover 

 worm in the United States. After Hill.) 



then run over them a roller or a brush drag; keep cultural con- 

 ditions in a high state of perfection at all times. 



