BOARD OF HORTICULTURE, MONTANA. 37 



A number of pests have attacked strawberries, the root borers being the 

 worst. There are quite a number of leaf-eating worms and caterpillars which 

 however can generally be controlled by hand picking in the younger or- 

 chards. The oyster shell bark louse infests nearly all the older orchards 

 in my section, and is a sign of neglect for where the green aphis have been 

 successfully combated there seem few, if any, of the shell. 



Borers for all fruits are very common, although the round headed borer 

 of apples does not seem to exist naturally, but comes only in nursery stock. 



The codling moth has been found in several orchards at Missoula and 

 Thompson Falls, and is probably only prevented from spreading by the mag- 

 nificent distances separating orchards in Montana. If owners of infested 

 orchards and their neighbors can be induced to assist, this awful pest can 

 be stamped out of the state. Thorough and careful cultivation is the rule 

 and not the exception in this district, depth though varies from 2 to 6 inches. 

 A few orchards are in sod. 



H. C. B. COLVILLE. 

 Missoula. Inspector Fourth and Fifth District. 



To the Honorable State Board of Horticulture: 



I found it necessary to appoint in my district assistant inspectors. To 

 facilitate the necessary work I appointed myself as one of them. I have 

 the honor to lay before you as fully as time and space will permit my re- 

 port. The rigorous action taken last year against the importation of infect- 

 ed fruit stamped out completely, in my district at least, any further impor- 

 tation of the same, and all fruits arriving in Missoula up to date, are clean 

 and healthy, and will remain so as long as the inspection and quarantine 

 system is kept up. 



The planting of young trees in my district this year has been very ex- 

 tensive. I have fumigated a great deal of nursery stock. Most of these 

 trees came from the east and Oregon, an^d some were home products. You 

 will remember that in my report last spring I spoke of a number of orchards 

 in and around Missoula having been more or less infected with the codling 

 moth, especially some old orchards where the pests hibernated for years. 

 According to the law, I notified early last spring all owners and agents of 

 such homes and orchards to spray with paris green emulsion immediately 

 after the blossoms had dropped. I found (with one or two exceptions) every 

 one willing to do so, and most of them made priv,ate arrangements with me 

 to spray their trees for them. I sprayed 74 homes and three orchards, con- 

 sisting in all of about 9,000 trees. Besides myself I employed two young 

 men from the University and carefully watched the dropping of the petals, 

 using a barrel sprayer drawn by a team of horses, whereever I could get 

 through the rows, and where I could not, I took refuge to the bucket spray- 

 er. I made my formula from four to eight ounces of paris green to fifty 

 gallons of water, and two pounds of slacked lime, I took great care to test 



