. [Bulletins on forest pathology : from Bulletin , Washington, , 1913-1925]. Trees; Plant diseases. m BULLETIN No. 275 Contribution from the Bureau of Plant Industry WM. A. TAYLOR, Chief. Washington, D. C. PROFESSIONAL PAPER. April 7, 1916 FOREST PATHOLOGY IN FOREST REGULATION. By E. P. Meinecke, Forest Pathologist, Office of Investigations in Forest Pathology. CONTENTS. Page. Introduction 1 Regulation of yield 2 Working plans 2 Rotation 6 Cutting cycle 8 Cumulative risk 9 Period of transition 15 Condition of timber stock 16 Total loss 16 Inferior species 19 Methods of investigatio
. [Bulletins on forest pathology : from Bulletin , Washington, , 1913-1925]. Trees; Plant diseases. m BULLETIN No. 275 Contribution from the Bureau of Plant Industry WM. A. TAYLOR, Chief. Washington, D. C. PROFESSIONAL PAPER. April 7, 1916 FOREST PATHOLOGY IN FOREST REGULATION. By E. P. Meinecke, Forest Pathologist, Office of Investigations in Forest Pathology. CONTENTS. Page. Introduction 1 Regulation of yield 2 Working plans 2 Rotation 6 Cutting cycle 8 Cumulative risk 9 Period of transition 15 Condition of timber stock 16 Total loss 16 Inferior species 19 Methods of investigation 22 Choice of species and site 22 Field methods 23 Pathology of white fir 27 Description of areas 33 Page. Methods of investigation—Continued. Local pathology of white fir 35 Tabulation of data 36 Condensation of data 41 Interpretation 46 Conclusions and outlook 53 Decay in relation to wounds 54 Forest regulation 54 Care of virgin forests 54 Forest regulation through timber sales 55 Marking 57 Pathological rotation and cutting cycles 59 Outlook 62 INTRODUCTION. At the time of the creation of the national forests in the United States the Government very suddenly found itself confronted with the problem of organizing an enormous acreage of practically virgin timber. It was natural that American forestry turned to the expe- rience of the Old World for guidance in this huge task; it was quite as natural that the present state of European forestry should have served as the ideal to be reached in the shortest time possible. In organizing the administrative machinery, European precedent could be followed more or less closely, but not so in almost all other phases of forestry. Except for certain economic factors and the develop- ment of modern machinery, conditions influencing the lumber industry in the United States are very dissimilar to those in the typical forest countries of central Europe. Our virgin forests them- Note.—This bulletin discusses the bearing of modern forest pa
Size: 1712px × 1460px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashi, bookyear1913
