CONTEOL OF THE CITKOPHILUS MEALYBUG. 15 
be effecth'e, must be thorough and to accomplish this it is necessary 
to go beneath the tree. The most satisfactory work was done when 
the nozzle was connected directly to the hose, allowing free manipu- 
lation in any direction. A long rod should never be used as it does 
not allow the ready manipulation necessary on heavily branched 
trees to spray from any direction. 
The trees on the demonstration plot were of an open type with 
smooth trunks and high headed, so they could be entered with ease 
and quickly and thoroughly covered with spray. It required only 
3 J tanks of spray to cover each of the 10 acres. The cost (1918) is 
summarized herewith : 
35 gallons distillate, at $0.05 per gallon . $1. 75 
70 pounds soap powder, at $0.05 per pound 3. 50 
Team and teamster for 1* days 9. 00 
Two men spraying for 1^ days . 9. 00 
Gasoline and oil 1. 25 
Total 24. 50 
Cost per tree. $0,036. 
The time. 1| days, included considerable engine trouble. Fifty- 
two trees were sprayed in 30 minutes. A tank of spray (200 gallons) 
covered approximately 200 trees. 
Several days after the Spraying the burlap bands, now dry, were 
replaced on the tree trunks and left for a year. At no time were 
insects noted under the bands except an occasional one. which the 
natural enemies destroyed before oviposition was completed. 
Throughout the following fall and winter (1918-19) it was very 
difficult to find even individual mealybugs, and the packing house 
handling the fruit reported it to be cleaner than any that had been 
turned in during the five preceding years, with an increase of grade 
amounting to from 30 to 10 per cent. 
During the spring of 1919 an inspection was made of the demon- 
stration plot and very few mealybugs and no ants were found. 
Under the old bands not more than 10 to 12 insects were found on 
any one tree. The grove was sprayed again by the owner in June 
of 1919, as outlined above. An inspection in May. 1920. showed a 
practically clean grove, not more than 5 insects being found under 
the bands of any tree, and most of the trees were entirely free of 
mealybugs. 
EXPERIMENT NO. 2. FARLOW GROVE, 888 TREES. 
In the summer of 1919 a second demonstration plot was employed 
which consisted of 10 acres of heavily infested oranges. Ant control 
and banding had been carried on the previous spring, and the ants 
were greatly reduced at the time of spraying. In this grove, as in 
the former, a power sprayer with two leads of hose and Bordeaux 
