34 xrKsi-:RN- ixspkctiox 



as well as those of currants and goosel)erries. besides a checking 

 u]) of all shii)inents of these forms into ^linnesota. and far as pos- 

 sil)le, their tdtimate distribution therein. To do this properly, gen- 

 erous co-o])eration upon the part of the Plant I'atholog}' Division of 

 the Experiment Station will l)e necessary. 



At a recent conference (^larch 2. while this report was wath 

 the printers) of representatives of the Minnesota Forestry Board, 

 the Minnesota Forest Ser\'ice_, the College of Forestry, the Minne- 

 sota State Forestry Association, the Horticultural and Plant Pa- 

 thology Divisions of the Minnesota Experiment Station, and the 

 Minnesota Nursery Inspector, a resolution was unanimously passed 

 to the effect that we strongly urge the Federal Quarantine Board to 

 quarantine those areas (as regards shipment of pines and Ribes ) 

 which are known to be infested with white pine blister rust, and the 

 Secretary of the Conference \\ as also instructed to write to the 

 Minnesota senators and re])resentatives. urging them to act favor- 

 al>l\- upon 11. R. 'JS02. introduced by Mr. W'ason. 



Since large consignments of pines, currants, and gooseberries 

 ha\e probabh- been receix ed froiu infected areas, b_\- large nurseries 

 in the United States, nurservmen and other importers are urged to 

 aA'oid placing orders for pines or currants or gooseberries at the 

 present time with wholesale dealers. In this connection it ma}' be 

 stated that a quarantine is just about to be issued by the h^deral 

 Horticultural Poard, nre\enting the importation of tive-leafed pines, 

 as well as all currants and gooseberries from Canada and New- 

 foundland, d'his disease is very slow to appear on plantings of 

 pine. Its first a])pearance dates i)ossibly three years after the 

 pines are set out. in this climate, although, it might not ai)i)ear until 

 considerabh- later. It is recognized b}- yellow s])ots on the bark 

 of the i)ine with irregular white edges, first a])pearing as irregular 

 s\vellings or blisters, which swellings or blisters later break open 

 The yellow color is caused by the presence of the i)ow(lery-likt 

 yellow s])ores. ( )n currants and gooseberries, it is obser\ ed in the 

 form of ver}' small, yellowish powdery masses on the under ^ide 

 of the lea\es about the size of the head of a pin. It must not lie 

 confounded with the other yellow s|)ores seen commonh- on our 

 gooseberries, the ])atches of which are much larger. 



Any nurseryman, observing anything at all suspicious upon his 

 pines, should at once report the fact to the Inspection Service. It 

 would be well to ad\ise this ofiice of an\- plantings of lTn'oi)ean 

 l)ines in one's nursery occurring at an\- time within the past eight 

 or ten vears. 



