Feb. '08] JOURNAL OF ECONOMIC ENTOMOLOGY 15 



interests of the crop producer. If a change in the system of cropping 

 is necessary, recommendations in keeping with the best practice should 

 be available. If postponement of the time of seeding will bring relief 

 from insect attack, the influence on yields from other causes due to 

 late seeding should be carefully studied, and estimated, and compared 

 with the losses occurring from the damage under normal conditions. 

 Some may think these matters belong to other departments of agri- 

 cultural investigation, and that the recommendations which are the 

 outcome of biological study should be turned over to other persons 

 for their execution. Such action is not in keeping with the crop pro- 

 ducer's estimate of agricultural organization, and he is an important 

 factor in the successful development of any remedial plan. Delay 

 consequent on the shifting of the execution of any method or methods 

 is destructive of the best interests of agriculture and oi the various 

 sciences which make up its multifarious structure. 



In concluding, I wish to express confidence in the opportunities 

 offered to economic entomologists for the development of preventive 

 and remedial measures against insect attack, by the timely correlation 

 of a thoroughly matured knowledge of agricultural conditions with 

 an exhaustive life-history and habit study. 



The discussion of this address was postponed until the afternoon 

 session. 



A paper was presented by Mr. Smith : 



CULTIVATION AND SUSCEPTIBILITY TO INSECT 



ATTACK 



By JoHX B. Smith, New Bruusicick, N. J. 

 (Abstract.) 



It is a common complaint in New Jersey by fruit growers that care 

 best for their orchards, that some of their neighbors that never spray 

 suffer less from the pernicious scale than they ; and there is a basis of 

 tact for the complaint. In almost every section of the state there are 

 old orchards, chiefly apple, that bear annual crops of good or fair 

 fruit, practically free from scale, though no spraying work is ever done 

 in the orchards and the trees have been infested for years. 



Investigation brought out a few facts that seem to be suggestive. 

 First, as a rule, vigorous, sappy growth is much more generally 

 infested and injured than slow, hardy growth. Second, trees grow- 

 ing in well cultivated orchards, highly fertilized, are much more likely 

 to suffer from scale attack than others. Third, trees that grow slowly, 

 or in sod, without much care, are much the more resistant to scale 



