70 ANNUAL REPORTS OF DEPARTMENT OF AGRft OLTURE, 1951 
A total of 600 shipments of plants, consisting of L,447,662 units. 
imported for growth under postentry quarantine and 264,442 
plants were released after having been kepi under observation for 
ilic required period. Frequent contacts were again made with State 
officials, and field inspections of plant material grown in detention 
w ei e made in cooperai ion wit h t lain. 
Imported Plant Materia] Treated 
In addition to the fruits and vegetables treated in transit, in Hawaii 
and Puerto Rico before movement to the mainland, and in M- 
before shipment to the United States, Large quantities of plant-, plant 
products, and even nonagricultural material had to It fumigated or 
otherwise treated upon arrival to eliminate plant pests. A total of 
L,064,000 bales and 2,700 containers of cotton lint, linters, and 
ging, 2,025 containers of cottonseed cake and meal, and •_'<*> -jr.i > cotton 
samples were fumigated. Treatment was also required as a condi- 
tion of entry for 228,200 containers of fruits and vegetables, 33,500 
bales of broomcorn, .vj. s "<> containers of chestnuts, cipollini, and 
mpeas, 2,243,700 unit- and 25,900 containers of plants, cuttings, 
bulbs, roots, and other propagating materials, 23,100 pounds and 
5,560 container- <>\ -red-. 7-"..'. bales of fiber, and 297,700 !<>t- of miscel- 
laneous plant products. In addition. 84,800 bales of cotton lint, lint- 
el-, and waste were utilized in approved northern mills in lien of 
fumigation. It was also necessary to treat or clean L9,000 pie.. 
returned military equipment, because of the presence of the L r iant 
African .-nail, and 257 tons of steel contaminated with cotton waste. 
Plants and Plant Products Certified for Export 
A- with most other plant quarantine activities, there was a marked 
increase in the inspection and certification of plants and plain prod- 
ucts io meet the import requirements of the countries of destination. 
During the year 20,533 export cert ificates were issued, covering 9,095,- 
ontainers. The certificate- were issued at L5 port- and covered 
146 commodities consigned i«» l-l foreign countries. Beginning Jan- 
uary 1. L951, Venezuela required inspection and certification of all 
Hour consigned to that country, which accounted in part for the 
increase in t In- act ivity. 
TRANSIT INSPECTION 
Effective February 1. L951, transit inspection activities were trans- 
ferred from the Division of Domestic Plant Quarantines t<> the Divi- 
sion of Foreign riant Quarantines and prompt steps were taken to 
integrate the activities at places where both t ran -it and foreign plant 
inline inspections have been conducted in the past. At other 
stations steps were taken to extend the sphere of transit inspection 
io include the examination of mail shipments of foreign origin and 
oi her foreign plant quarantine work. Inspections were made of more 
than 1,522,000 shipments of quarantined material moving in inter- 
state or intrastate commerce; L,71 1 shipments were found to be mov- 
