February, '19] CORY: ORIENTAL PEACH MOTH 83 



Control experiments are quite variable in their results. The ques- 

 tion of how much arsenical spray a peach tree will stand as well as the 

 actual value of its application is involved. 



The effect of various insecticides on the egg is interesting. Nicotine 

 sulfate at 1-500 or 1-800 alone gives about 70 per cent mortality and in 

 combination with self-boiled lime sulfur, arsenate of lime and lime 

 caseinate is equally as effective in laboratory tests. Field tests show 

 that even better results may be obtained. In one instance only three 

 infested twigs were found on a sprayed tree while thirty were taken from 

 a tree of the same size along side of the sprayed tree. Apparently the 

 timely application of the proper insecticide will control the pest but 

 the ciuestion of economy in spraying and the possible results to the 

 tree will bear close scrutiny. 



One of the most serious points to be considered is the feeding in 

 apples by the late broods. Apparently this is one of the greatest 

 sources for over wintering forms, at least in young trees adjacent to 

 apple orchards. 



The confining of the pest to its present limits seems to be scarcely 

 possible owing to the fact that infested fruit serves as the greatest po- 

 tential source of dissemination. Measures of quarantine that disre- 

 gard fruit are not likely to be successful in checking the spread of the 

 pest. Nursery stock usually has smooth bark and probably is seldom 

 used for pupation. Pupation is more likely to occur in the ground 

 than on smooth bark trees. 



In view of the facts set forth, it would seem that unless unforseen 

 circumstances alter the present habits of the pest, that it is little to be 

 feared. The insect should be considered in the same light that we con- 

 sider the codling-moth as far as the orchard is concerned and in 

 nurseries it should be treated as any other nursery pest. That is to 

 say that every precaution of inspection should be utilized to prevent 

 its dissemination on the stocks. 



Vice-President E. C. Cotton: This is one of our new pests and I 

 trust this paper will be thoroughly discussed. 



Mr. p. J. Parrott: I am wondering if there are any of the Federal 

 workers here who can report what they found in their effort to deter- 

 mine the destruction of the species. One agent visited Geneva, N. Y., 

 and spent a number of days inspecting nurseries and orchards in that 

 vicinity. He then visited Rochester and Buffalo, but I haven't heard 

 as to the results of the examinations that were made. 



Mr. W. B. Wood: I do not have the records here, but as I remem- 

 ber it, I think I can give you practically the way the inspection results 



