DISPOSAL OF INFECTED SLASH 55 



cut-over areas. These sporophores produce innumerable spores annu- 

 ally so long as they continue alive, and are grave sources of infec- 

 tion to the remaining susceptible trees of the stand. This danger 

 threatens seed trees, reproduction and all surrounding mature trees. 

 The more moist and shadier sale areas recorded are found to develop 

 a larger percentage of live sporophores than the drier and more open 

 one, and logs in close contact v^-ith the ground develop sporophores 

 more readily than logs raised above the ground and receiving less 

 moisture. 



A high percentage of live sporophores, as well as of new sporo- 

 phores formed since the cutting, is found on all of the areas recorded. 

 Tramctcs pini fruiting bodies are found to be more numerous than 

 those of other species of fungi, and have a high percentage alive. 

 All manner of slash (excepting brush) is found bearing fruiting 

 bodies. Slash left upon sale areas acts as a fire menace and as a 

 disease-infection menace. It is, therefore, highly desirable to dispose 

 of all such material in order to improve the health of the forest. 



Suggestions are made for the disposal of infected slash left upon 

 cut-over areas by means of piling and burning of brush and stacking 

 of remaining infected material so as to prevent sporophore produc- 

 tion. These suggestions are adapted to the various forest types accord- 

 ing to the moisture conditions of the sites, the cutting methods used, 

 the presence of undesirable inferior species, and the available brush. 



This study agrees with the timber sale policy of the Forest Service 

 in regard to forest sanitation and hygiene as practiced in the forests 

 of the Northwest, and tends to emphasize the necessity of protecting 

 the future timber crop from its numerous diseases. 



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