FEDERAL HORTICULTURAL BOARD. 627 



quarantine promulgated by the State permitting the intrastate move- 

 ment from licensed and inspected nurseries of all currants (except 

 cultivated black currants) and gooseberries from the tei;ritory there- 

 tofore under quarantine west of the Cascade Mountains. The need 

 for maintaining as thoroughgoing quarantine protection as possible 

 in this region is to prevent the spread of the disease to the very 

 valuable commercial stand of western white and sugar pine forests 

 of the Rocky Mountain and Pacific coast regions. 



The board is now enforcing two domestic quarantines on the sub- 

 ject of the white pine blister rust. These are Nos. 26 and 54, the 

 latter covering Washington, as just discussed. Quarantine No. 

 26 as now amended prohibits the interstate movement of five-leafed 

 pines, currant, and gooseberry plants from all of the States east of 

 and including the States of Minnesota, Iowa, Missouri, Arkansas, 

 and Louisiana to points west of these States. Within this large 

 quarantined area two supplemental quarantine districts have been 

 established, the first covering all of the New England States and 

 New York, for the protection of the States within the larger quaran- 

 tined area lying west of this group in which the pine blister rust 

 is either not established or has very limited foothold, and the sec- 

 ond to j)rotect New York from the New England States on account 

 of the fact that New York is making a thoroughgoing effort to 

 eradicate this disease within her boundaries. 



The enforcement of these quarantines is carried out by inspectors 

 working under the direction of the Bureau of Plant Industry, in 

 cooperation with the board, and with the Post Office Department, 

 State officials, common carriers, and the nurserymen concerned. 



BLACK STEM RUST OF WHEAT. 



In connection with the campaign for the eradication of the com- 

 mon barberry for the purpose of controlling epidemics of black stem 

 rust on wheat, Quarantine No. 38 was promulgated, effective May 1, 

 1919, prohibiting the shipment of the common barberry from any 

 State in which black stem rust occurred into any one of the 13 

 States comprising the eradication area, namely, Colorado, Illinois, 

 Indiana, Iowa, Michigan, Minnesota, Montana. Nebraska, North 

 Dakota, Ohio, South Dakota, Wisconsin, and Wyoming. During 

 the past year there have been but very few records of infractions of 

 this quarantine, and, in general, the nurserymen have cooperated in 

 making this quarantine effective. It should be especially noted that 

 the campaign is directed solely toward the eradication of the com- 

 mon barberry and that the Japanese barberry is harmless and its 

 use to supplant the common barberry as an ornamental is encouraged. 



From the beginning of the campaign to June 30, 1923, almost all 

 cities, towns, and villages in the 13 States have been surveyed. The 

 original survey was completed in Wyoming, and but few counties 

 remain to be covered in Colorado and Montana. The survey in the 

 other 10 States progressed rapidly and an area equivalent to 484 

 counties was covered. From time to time resurveys are made of 

 each property on which barberries have been found, and properties 

 in the vicinity of large bushes, either cultivated or escaped, which 

 are old enough to bear seeds, have been designated for especially 

 careful resurvey the next season. 



