U.S. D. A., B. E. Bul. 68, Part VII. D. F. I. I., April 29, 1908. 
PAPERS ON DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 
DEMONSTRATION SPRAYING FOR THE CODLING MOTH. 
INTRODUCTION. 
By A. L. QUAINTANCE, 
In Charge of Deciduous Fruit Insect Investigations. 
Although the codling moth (Carpocapsa pomonella 1.) has received 
a large amount of attention from entomologists, horticulturists, and 
others during the past fifteen or twenty years, and methods for its 
satisfactory control have long been known and practiced by orchard- 
ists, itis nevertheless true that a large number of apple growers either 
do not spray for this insect or, from lack of thorough and timely 
applications, do not secure satisfactory results. In connection with 
other work at some of the field stations in the deciduous fruit insect 
investigations of the Bureau of Entomology, it has been possible to 
make demonstration sprayings in the control of the codling moth to 
serve as object lessons for the orchardists of the neighborhood. The 
usefulness of the work is shown by its popularity among fruit growers, 
and indicates that, in general, work of this character is perhaps as 
much needed as work along purely investigative lines. 
DEMONSTRATION SPRAYING IN VIRGINIA IN 1907. 
By S. W. Foster. 
The orchard of Mr. J. J. McHenry, where this demonstration was 
made, is located near the foot of the Blue Ridge Mountains near 
Afton, in Nelson County. This orchard site is very favorable, hay- 
ing a northern exposure with an elevation of about 1,000 feet, and 
being partly protected on the western side by a mixed forest. 
Mr. McHenry’s orchard consists of about 400 Yellow Newtown 
Pippin trees and 220 trees of the Winesap, Limbertwig, and Shock- 
ley varieties, all of which were reported to be 28 years of age. Some 
years ago this orchard was very profitable, but the prevalence of the 
codling moth, together with some of the more important fungous 
diseases, as bitter rot and apple scab, soon reduced and practically 
cut off all profits. Along with this the orchard for some time re- 
- ceived little or no attention, and only within the last two or three 
years had there been any attempt toward spraying and the giving 
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