aa ae 
quantity of wormy fruit; that the oil-—nicotine combination is a valuable 
one; and that pyrethrum, in this case dissolved in oil, may be of some 
use in ccdling—moth control. Of the fluorine ccmpounds tested, barium 
fluosilicate in the form used (Dutox) did not give especially good re=- 
sults either alone, with a spreader, or with fish 011. Potassium fluosi- 
licate was better, as was the artificial cryolite. The natural cryolite 
and potassium fluoaluminate, especially at 4 pounds to 100 gallons, were 
remarkably effective. Rotenone and cuprous cyanide gave poor control. 
The cmission of the calyx spray resulted in a very high percentage of 
wormy apples." 
E. A. McGregor, Lindsay, Calif., reports that "Nine types of sul— 
phur were tested during the 1931 season as to their relative values for 
the protection of the oranges against injury from the citrus thrips 
(Scirtothrips citri Moult.). The data were secured by comparing the 
fruit damage in treated plats with the damage in the untreated check 
plats, present in every case. In this manner we were able to compute 
in terms of percentage the 'reduction in fruit-scarring.' For the sev— 
eral sulphur plats, the reduction in scarring was found to vary from 
p4.2 per cent to 94.2 per cent." 
Concerning the gray citrus scale (Coccus pseudomagnoliarum Kuw.), 
Mr. McGregor states that the several insecticide programs——together 
with factors of natural control-—have sufficed to keep in satisfactory 
condition most orchards where the scale population was fairly low at the 
beginning of the season. "The standard dusting program, as recommended 
by the Lindsay office, has kept most of the ‘commercially clean' orchards 
commercially clean of the gray scale. * * * The check orchards Rave 
remained heavily infested." 
A. W. Cressman, New Orleans, La., reports: "Another examination of 
the fig tree treated in October with paradichlorobenzene in cottonseed 
oil and painted with asphalt showed only two places which were infested 
with (three-lined fig-—tree) borers (Ptychodes trilineatus L.) and one of 
these was on the underside of one limb, in a section which had evidently 
been missed in the treatment. One borer was found in an area which had 
been previously treated, These results indicate that when the above ap— 
plications are made after scraping the bark of the infested branches, it 
may be possible to control the borer in mcderately infested trees." 
M. A. Yothers, Wenatchee, Wash., submits the following results ob— 
tained with various canker paints for preventing infestation by the 
woolly apple aphid (Eriosoma Jlanigerum Hausm.) on perennial canker 
(Gloeosporium perennans) of the apple: "(1) No paints applied as early 
as March, April, or May gave satisfactory woolly aphid control in can— 
kers throughout the whole season; (2) several paints applied in June 
gave complete or nearly perfect control throughout the remainder of the 
season; (3) several other paints applied in August, upon cankers cleaned 
in July and August, gave satisfactory control throughout the remainder 
of the season; (4) some thirteen paints applied as repaints in July 
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