Pamphlets on Forestry, Volume 121991 |
From inside the book
Results 1-3 of 82
Page 41
... extent of various tree diseases , such as rot , mistletoe infestation , witches ' brooms , leaf and seedling diseases . Similarly , while the investigations of insect infestations are in charge of the Bureau of Entomology , studies of ...
... extent of various tree diseases , such as rot , mistletoe infestation , witches ' brooms , leaf and seedling diseases . Similarly , while the investigations of insect infestations are in charge of the Bureau of Entomology , studies of ...
Page 288
... EXTENT OF DAMAGE DETERMINED BY SPECIAL INVESTIGATIONS . Within recent years the writer has conducted investigations in the principal hardwood forests of the country for the purpose of deter- mining the extent and character of damage ...
... EXTENT OF DAMAGE DETERMINED BY SPECIAL INVESTIGATIONS . Within recent years the writer has conducted investigations in the principal hardwood forests of the country for the purpose of deter- mining the extent and character of damage ...
Page 12
... extent of pri- vate cooperative work required . Mr. PETERS . We do not require it ; we only feel justified in en- couraging it . It may include the hire of patrolmen , the construction of lockouts and trails , or other effective ...
... extent of pri- vate cooperative work required . Mr. PETERS . We do not require it ; we only feel justified in en- couraging it . It may include the hire of patrolmen , the construction of lockouts and trails , or other effective ...
Contents
Object of the publication | 9 |
Description of the different lines of investigationContinued | 12 |
Wood distillation | 25 |
78 other sections not shown
Common terms and phrases
acres amount annual appraisals average bark brush burning capital cent cooperation cost cover creosote crop Department of Agriculture depreciation determine diameter district Division of Forestry Douglas fir effect Engelmann spruce equipment Experiment Station farm farmers fibers fixed investments forage forest land forest reserves Forest Service Fort Bayard furnish germination grade grazing ground growth important improvements inches investigations investment loblolly pine lodgepole pine longleaf pine lookout lumber material ment methods miles mill moisture mountain National Forests operation owners patrol piling plantations planting poles practical present profit protection railroad range rangers red spruce region reproduction season secure seedlings sheep silvicultural slope soil sowing spark arresters species spring spruce streams studies stumpage sugar pine supply Telephone Company thousand feet timber tion trail trees warden white fir white pine wood lot yellow pine