1932] SERVICE AND REGULATORY ANNOUNCEMENTS 33 
40° F. by the date in column 1, treatment must be delayed until this point is 
reached. 
Preparation of plant for treatment. — Remove all weeds and debris from the 
soil about the plant. Tie low-hanging branches so they will not dip into the 
solution. Level the soil. After the size of the mass of soil to be lifted has 
been determined, place a galvanized-iron collar about the plant and force it 
3 inches into the soil. The size of the collar to be used is shown in Table 1. 
Firm the soil carefully on each side of the metal. 
Application. — Measure the diameter of the collar, find from Table 3 or 
Table 4 the number of gallons of water and the cubic centimeters of miscible 
carbon disulphide required, and mix with a stick. Pour into the collar, avoid- 
ing splashing or unnecessary disturbance of the soil. 
Period of treatment. — The collar and the soil must not be disturbed for 48 
hours. The plant must be dug between two and five days after treatment. 
Handling after treatment. — The plant may be dug and handled according to 
the usual nursery practice, except that no soil outside the collar must be 
taken up with it. 
CONDITIONS UNDER WHICH THE CARBON DISULPHIDE TREATMENT MAY BE APPLIED 
1. The minimum soil temperature 6 inches below the surface in the nursery 
must be 40° F. or higher for the 48-hour period immediately following the 
application of the carbon disulphide emulsion. 
2. The surface of the soil around the base of the plant to be treated must 
be level and the treatment must not be applied where the ground has a slope 
of more than 1 inch in 10 inches. 
3. The collars must be carefully placed in strict accordance with the direc- 
tions in order to assure that no seepage occurs. Especial care must be taken 
on plowed and stony land to prevent loss of the solution. 
4. An examination of the soil must be made by digging to a depth of at 
least 12 inches, outside of the collar, to determine whether a hardpan of clay, 
rock formation, high-water table, newly transplanted plant, mole hole, or other 
unfavorable condition is present which would prevent the proper penetration 
of the solution. 
5. A record must be made of the time of penetration of the solution on each 
plant treated. If the solution disappears from the surface in less than 10 
minutes or requires more than 5 hours the treatment will not be successful. 
6. An examination must be made during the treatment and after the solution 
has disappeared to determine the uniformity of penetration. Uniform pene- 
tration must be obtained. 
Lee A. Strong, 
Chief of Administration. 
UNITED STATES TO MAINTAIN JAPANESE-BEETLE QUARANTINE 
(Press notice) 
June 7, 1932. 
Lee A. Strong, Chief of the Plant Quarantine and Control Administration, 
announced to-day that the United States Department of Agriculture has decided 
to continue the Federal regulations to prevent the spread of the Japanese beetle. 
A conference was held in March to consider the possible revocation of this 
and other quarantines. Representatives from 28 States, the District of Colum- 
bia, and the Dominion of Canada attended. Among those present were commis- 
sioners of agriculture, State entomologists, or quarantine officers of the States 
and countries mentioned, in some cases all three ; the official representatives of 
the National Association of Commissioners, secretaries and departments of agri- 
culture ; representatives of the American Association of Nurserymen ; the East- 
ern Nurserymen's Association ; the Long Island Nurserymen's Association ; the 
Western Plant Quarantine Board ; the National Plant Board ; the Southern 
Plant Board ; the New England Nurserymen's Association ; the Society of 
American Florists and Ornamental Horticulturists; the New York Florist Club; 
the Crop Protection Institute ; the Ohio Nurserymen's Association ; the National 
Canners Association; a number of nurserymen not officially representing asso- 
ciations; newspaper reporters and editors; and Members of Congress. 
