CONTROL OF CODLING MOTH IN COLORADO. 35 
to have well-made hose of sufficient length and hose couplings and 
clamps that will stand the strain of the work without breaking or 
allowing the hose to be forced off during the spraying operations. 
As previously stated, it is believed that the use of spray poles 
equipped with the whirlpool-disk type of nozzles will result in a larger 
percentage of clean fruit than if the short rod and Bordeaux nozzle or 
the spray gun are used. The last two methods of spraying, however, 
will save considerable time and it is therefore a question of the value 
of time against a somewhat greater quantity of fruit free from worms. 
The choice of method will depend upon availability and cost of labor, 
weather conditions, size of orchard, and number of spray machines, 
severity of infestation, vafiety of fruit, and other factors. Under 
some circumstanees the grower may find it an advantage to use the 
spray gun for the calyx application and the first cover spray, changing 
to the poles and finer sprays for the later treatments when the fruit 
is larger and the skin is smoother, more waxy, and more difficult to 
coat with the spray liquid. 
SUPPLEMENTAL CONTROL MEASURES. 
BANDING. 
Despite the most thorough spraying some first brood larve will es- 
cape the poison, and after completing their feeding period within the 
fruit will leave it and spin their cocoons on the tree trunk and later de- 
velop into moths which will in turn produce second-brood larve. Asa 
means of catching these larve the banding method may be practiced. 
This consists of scraping the trunk to remove the loose bark, thus de- 
stroying most of the places where the larve hide, and then placing 
around the trunk a burlap band, folded into two or three thicknesses to 
a width of about 6 inches. These bands should be examined every 10 
days from about the middle of June to August 31, and all of the larvee 
and pup found beneath should be killed. A final examination 
should be made any time after the fruit is harvested. The banding 
method, if properly worked from year to year in conjunction with 
thorough spraying, will gradually reduce the number of individuals in 
the orchard so that a larger percentage of worm-free fruit will be ob- 
tained than with spraying alone. 
CODLING-MOTH TRAP. 
A codling-moth trap has been devised as a substitute for the band- 
ing method. This device will serve the same purpose as banding and 
will obviate the necessity of working the bands during the growing 
season when labor is usually much needed for other duties. While 
the spraying experiments do not indicate any pronounced benefit 
through the use of the codling-moth trap, it should be borne in mind 
that this device was used only one season and then only in a part of 
