CONTROL OF THE CITEOPHILTJS MEALYBUG. 
The first operation 
branches from the 
ground so as to 
force the ants to as- 
c e n d the trunks 
where the poison 
was placed. Two 
men trimming aver- 
aged 78 trees per day 
of 8 hours at a cost 
of approximately 8 
cents per tree. The 
orchard was in a 
state of clean culti- 
vation and entirely 
free of weeds be- 
neath the trees. 
Ant control was 
begun on about 1 
acre of the first 10 in 
September, and the 
remainder complet- 
ed by October 5, 
1917. " The second 10 
was covered by ant 
control in Novem- 
ber, 1917. An ar- 
s e n i c a 1 - sweetened 
sirup, known as the 
Barber formula, was 
used for the first 
distribution in this 
orchard, a small 
amount being placed 
in each container, 
one of which was at- 
tached to each tree. 
(Fig. 6.) Complete 
eradication was ef- 
fected the following 
spring at a cost of 
2.6 cents per tree on 
the first 10 acres and 
at a cost of 4.9 cents 
per tree on the second 10 acres. 
78472—32 2 
undertaken was the trimming up of the 
m 
□ 
Fig. 
Citrophilus mealybug control 
triet, 1917-1919. 
areas, Upland dis 
The control is summarized in Table 1. 
