150 , NUT GROWING 



tack the buds of walnuts and hickories in the very 

 early springtime and in later broods. The early 

 brood will tunnel into the buds and altogether de- 

 stroy or injure them severely before they are fairly 

 well under way. Large fruiting buds are the ones 

 which suffer the greatest damage. There are several 

 broods during the season, and the later broods of 

 some of the species spin a thin web which protects 

 them against bird enemies. In this small book no 

 attempt will be made to refer to other genera of 

 bud worms which attack nut trees. The practical 

 point relates to the fact that arsenate of lead spray- 

 ing will destroy all of the bud worms. In this con- 

 nection it is necessary to spray the buds of the wal- 

 nuts and hickories at the very first swelling of the 

 bud before the bud scales have expanded, whenever 

 we find that any one colony of bud worms has be- 

 come established in a locality. 



The fall web worm, Hyphenatria cunea, which at- 

 tacks a very large range of kinds of trees indiscrimi- 

 nately, includes the nut trees in its ravages. The 

 caterpillars make nests near the ends of branches by 

 drawing leaves together with their webs. Sometimes 

 the nest may be found as early as June, but the 

 largest number appear in July and August. The 

 worms of this species work within the protection of 

 leaves that have been drawn together and covered 

 with a web. Spraying is not so effective as with 

 most other species but the clusters of leaves that 

 have been bound together are readily recognized and 

 easily clipped off and burned. 



