1937] 
SERVICE AND REGULATORY ANNOUNCEMENTS 
.51 
A list of foreign countries in which the species of weeds above named are 
known to exist is compiled by the secretary of quarantine, People's Commis- 
sariat of Agriculture. 
List of Diseases and Pests Declared Injubious* 
[Published under the authority of decree no. 2598, of Nov. 20. 1934, entitled "Safeguard- 
ing the Territory of the U. S. S. R. Against the Introduction and Distribution of 
Agricultural and Forest Pests"] 
The list includes the principal pests and diseases of agricultural plants sub- 
ject to quarantine restrictions under the provisions of the Decree of Foreign 
Plant Quarantine. 
The quarantined insects and diseases included in the list are arranged in 
three groups in accordance with the degree of quarantine restrictions to which 
controlled imported shipments are subject. 
Group 1 includes the most injurious species of insects and diseases of agri- 
culture that are not lN;nown to occur in the Union of Soviet Socialist Republics. 
To prevent the possibility of introducing into the Union of^ Soviet Socialist 
Republics the pests named in this group an embargo is placed upon products 
that may serve as carriers of those pests and thus effect their introduction. 
A complete prohibition may be established, as for example, on potatoes and 
other tuberous products and root-crops, regardless of the country of origin. 
The prohibition may be limited to particular countries infested by certain in- 
sects and diseases within a given group, for example, in the case of citrus 
propagating material, which is excluded only from countries in which citrus 
canker occurs, etc. 
Exceptions are made for purposes of scientific research only, by the permis- 
sion, in each instance, of the Bureau of Quarantine, People's Commissariat of 
Agriculture, Union of Soviet Socialist Republics, specifying the quarantine 
measures to be observed. 
Group 2 includes not only insects and diseases not known to occur in the 
Union of Soviet Socialist Republics, but also several especially injurious spe- 
cies previously introduced into isolated regions of the Union, with respect to 
which quarantine measures are undertaken ^^ith the object of eliminating the 
foci of infection. 
The presence of the pests included in group 2 may necessitate the prohibition 
of entry against an entire imported shipment in the event that any one of the 
insects or diseases of this group is discovered upon quarantine inspection, in 
case the application of the existing quarantine measures of separation and dis- 
infection will not fully insure the freeing of the shipment from infection. 
In the latter contingency infected portions of shipments are subject to re- 
turn to the original shipper or to destruction. Appropriate legal records are 
made of such action. 
Group 3 includes both insects and diseases not known to occur in the Union 
of Soviet Socialist Republics and those present in particular parts of the 
Union and subject, therefore, to the regulations of domestic quarantines. 
Quarantine measures concerning insects and diseases of this group include 
the disinfection of shipments, regulation, restriction of areas of ultimate utili- 
zation and the promulgation of measures, through special orders, which may 
be applied to material intended for planting and sowing, in order to insure that 
the distribution of the quarantined pests shall be prevented, thus : 
Release of the material through established quarantine greenhouses, nur- 
series, and areas ; detention of plants under conditions of close supervision 
which may result in the discovery of infection not apparent at the time of 
Importation ; the adoption of aseptic methods of propagation, in some instances, 
of plants subject to control under conditions of isolation, etc. 
Plants or plant products intended for propagation found to be infested by in- 
sects and diseases not known to occur in the Union of Soviet Socialist Re- 
publics and not named in this list, may be allowed to enter under the condi- 
tions prescribed for such products under group 2. 
In accordance with the provisions of article 4 of Decree No. 2598 of the 
Soviet of People's Commissars of the Union of Soviet Socialist Republics of 
* This list includes a statement of the geographical distribution of each pest or disease, 
including distribution in the United States. Since the information with respect to distri- 
bution in foreign countries is not essential in this circular, reference is made to distribution 
in the continental United States, Hawaii, and Puerto Rico only. 
