os 
the Isle of Wight disease. An exception is made of the United States, this 
being the only country from which importations are permitted. 
} 
i 
FRUIT INSSCT INVESTIGALTONS 
A. Ll. Quaintance, Entumologist in Charge 
C. P. Clausen and J. L, King, who have been working in the Orient, with 
headquarters at Yokohama, Japan, in search of parasites of the Japanese 
beetle, are now in Washington, 
Mr, Fred E. Brooks, of the French Creek, W. Va., station, states: 
"Several complaints have recently come to the station regarding injury to 
wasnuts by the wainut husk-maggot, Rhagoletis suavis Loew. Under date of 
November 1, 1923, Dr. H. EB. Hale, New York City, in writing of injury by 
this species to Persian walnuts at Princeton, N. J., says: 'This season 
they ruined the crop. The worms have made our trees valueless.' Doctor 
Hale expects to attempt the control of the maggots next season with arsenical 
Sprays. Robert Moore, Brighton, N. J., also reports injury to Persian 
Walnuts by this maggot. HE. H, Riehl, Godfrey, Ill-., writes that in the 
thinner-shelled varieties of our native black walnut the dark juice in the 
husk induced by the feeding of the maggots penetrates to the kernel, 
discoloring it and impairing the flavor. 
"In attempting to control chestnut weevils by spraying, considerable 
injury was done to several trees of hybrid varieties at Bell Station, Md., 
' with lead-a:senate sorvay used at a strength of 2 pounds of the lead to 50 gal- 
lons of water, W. R. Fickes, Wooster, Ohio, also injured trees of Boone, 
Paragon, Fuller, and Progress chestnuts, with a similar spray. Both the 
foliage and immature burs were more or less injured by the applications." 
Oliver I. Snavp reports: "A large quantity of lubricating-oil emulsion 
will be used this winter for the control of the San Jose scale on peach 
trees in the Georgia peach belt. One manufacturer has already sold 14 
carloads in the district. Some growers have constructed plants and are 
manufacturing their owmm emulsion. The laboratory has not yet had sufficient 
expérience with the new emulsion to determine definitely the effects on 
peach trees from the continued annual use of the material. Consequently 
no recommendation for its use on peach trees has been issued from the 
laboratory. Nevertheless many growers are so well satisfied with what has 
been learned about the material to date that they are using it in their 
commercial peach orchards this winter on their own responsibility. Scale 
spraying has already begun, and indications point to a heavy use of the 
| €ngine-oil emulsion here.!! 
