BUREAU OF ENTOMOLOGY AND PLANT QUARANTINE 19 
Salem, Ohio. Examination of soil accompanying a single flowering plant being 
moved from Philadelphia, Pa., to Inkster, Mich., resulted in collection of 12 
larvae. From numerous larvae taken from soil about the roots of 2 zinnias, 
9 pansy plants, and 1 ivy plant being transported from Westtown, Pa., to 
Chautauqua. N. Y., there were identified 9 Japanese beetle grubs. Nine larvae 
were taken from sqil about the roots of two evergreens found in the possession 
of a motorist traveling from Woodstown, N. J., o Carmel, Ind. One of the 
summer interceptions consisted of nine adults taken from the cab of a truck 
en route from Lime Rock, Pa., to Woodstock, Va. All suspected larvae inter- 
cepted by road patrolmen are forwarded to field headquarters for identification. 
Among nursery stock surrendered at the road stations were 130 lots of 
five-leafed pines seized while being transported in violation of Quarantine 
No. 63. 
Inspection of small lots of plants and farm products by road inspectors 
was continued. The practice of removing uncertified soil and replacing it 
with fumigated soil on hand at the posts has met with very favorable public 
response and has materially reduced the frequent complaints that formerly were 
received from drivers who were obliged to surrender their products or return 
to a designated center for inspection and certification. 
Motor vehicles stopped for inspection at the road stations during the year 
numbered 2,455,072. Of the cars and trucks examined, 16,695 were found to be 
transporting uninspected quarantined products. 
CERTIFICATION AND TREATMENT OF NURSERY STOCK 
Nursery and greenhouse scouting in the summer of 1934 resulted in the 
finding of adult beetles on a larger number of theretofore uninfested premises 
than were determined as infested in 1933. Infestations were found for the 
first time on 64 classified establishments, as compared with first-record finds 
on 33 such premises the preceding summer. Beetles have been found on 
the premises of 80 percent of the 363 classified establishments in New Jersey. 
This condition is largely a result of natural spread of the insect. Among 
2,241 nurseries and greenhouses fulfilling the quarantine requirements for 
classification, 555 are infested and the owners are obliged to grow their stock 
in screened greenhouses, free it from soil, or chemically treat it before 
shipping to noninfested territory. This is a net decrease of 135 in the number 
of establishments on the classified list. There w T as a large reduction in in- 
fested classified establishments, many of which relinquished their classified 
status rather than conform to the conditions necessary for keeping their stock 
free from beetle infestation. 
Spring demands for inspection and certification of nursery stock were 
consistently heavy in all States under regulation. A number of shippers 
that had been inactive for the past 3 years suddenly began shipping, with a 
consequent need for detailed examination of plant material from an unex- 
pected source. This required that additional inspectors be hired to supple- 
ment the regular inspection force. 
Soil samples collected from nursery plots treated with lead arsenate were 
submitted to the Japanese beetle research laboratory for analyses. For the 
purpose of determining the present toxicity of poisoned nursery plots. 873 
samples were collected during April and the early part of May. Results of 
the analyses were available in time to permit nurseries to restore their 
treated sections to the required dosage of 1,500 pounds of the soil insecticide 
per acre by the dates prescribed in the treating instructions. A total of 
76.7 acres, containing 362,048 items of growing nursery stock, is involved in 
the poisoned areas treated during the year. This acreage includes plots newly 
treated, those re-treated and brought back to their original dosage, and plots 
found upon analyses to have carried over a sufficient concentration of the 
lead arsenate. Seventeen tons of powdered lead arsenate were distributed 
on nursery plots by the owners in completing initial treatments and re-treat- 
ments. Some 1.200 pounds of this amount was applied to 94.4t'.3 square feet 
of heeling-in areas and coldframes. 
Cooperative experiments with the Japanese beetle research laboratory re- 
sulted in the adoption of a treatment whereby certain species of azalea may 
be rid of Japanese beetle infestation by means of paradichlorobenzene fumiga- 
tion. Interested nurseries furnished plants used in the tests, and were very 
anxious to have such a method approved. This new method permits certifica- 
tion of types of plants that are not tolerant to the commonly employed chemical 
