Search results for: Ferrell, George T.

Showing 1 - 14 results of 14 Refine Results
  1. 1

    Growth of white firs defoliated by modoc budworm in northeastern California

    Authors: Ferrell, George T.
    Published: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station, 1980
    Physical Description: 9 pages : illustrations ; 28 cm.
    Government Document Book
  2. 2

    Black pineleaf scale

    Authors: Ferrell, George T.
    Published: U.S. Department of Agriculture, Forest Service, 1986
    Physical Description: 4 unnumbered pages : color illustrations, 1 map ; 24 cm.
    Government Document Book
  3. 3

    Fir engraver

    Authors: Ferrell, George T.
    Published: U.S. Department of Agriculture, Forest Service, 1986
    Physical Description: 7 pages, 1 unnumbered page : illustrations (some color), 1 map ; 24 cm.
    Government Document Book
  4. 4

    Using indicator plants to assess susceptibility of California red fir and white fir to the fir engraver beetle

    Authors: Ferrell, George T.
    Published: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station, 1986
    Physical Description: 5 pages : illustrations ; 28 cm.
    Government Document Book
  5. 5

    Gouty pitch midge damage to ponderosa pines planted on fertile and infertile soils in the western Sierra Nevada

    Authors: Ferrell, George T.
    Published: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station, 1987
    Physical Description: 3 pages ; 28 cm.
    Government Document Book
  6. 6

    Differential susceptibility of White Fir provenances to balsam twig aphid

    Authors: Ferrell, George T.
    Published: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station, 1989
    Physical Description: 4 pages : map ; 28 cm.
    Government Document Microfilm Book
  7. 7

    Risk-rating systems for mature red fir and white fir in northern California

    Authors: Ferrell, George T.
    Published: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station, 1980
    Physical Description: 29 pages : illustrations (some color) ; 22 cm.
    Government Document Book
  8. 8

    Stem volume losses in grand firs topkilled by western spruce budworm in Idaho

    Authors: Ferrell, George T.
    Published: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station, 1982
    Physical Description: 10 pages : illustrations ; 28 cm.
    Government Document Book
  9. 9

    Growth classification systems for red fir and white fir in northern California

    Authors: Ferrell, George T.
    Published: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station, 1983
    Physical Description: 18 pages : color illustrations ; 22 cm.
    Government Document Book
  10. 10

    Stand and tree characteristics influencing density of fir engraver beetle attack scars in white fir

    Authors: Ferrell, George T.
    Published: Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture, 1973
    Physical Description: 8 pages : illustrations ; 27 cm.
    Government Document Book
  11. 11

    Weather and tree growth associated with white fir mortality caused by fir engraver and roundheaded fir border.

    Book
  12. 12

    Ten-year risk-rating systems for California red fir and white fir : development and use

    Authors: Ferrell, George T.
    Published: U.S. Dept. of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station, 1989
    Physical Description: 12 pages : digital, PDF file.
    Connect to online resource - All users (Federal Depository Library Program Persistant URL)
    Government Document Electronic eBook
  13. 13

    Incidence and effects of endemic populations of forest pests in young mixed-conifer forests of the Sierra Nevada

    Authors: Williams, Carroll B.
    Published: U.S. Dept. of Agriculture, Forest Service, Pacific Southwest Research Station, 1992
    Other Authors:
    Physical Description: iii, 8 pages : digital, PDF file.
    Connect to online resource - All users (Federal Depository Library Program Persistant URL)
    Government Document Electronic eBook
  14. 14

    Insects and related arthropods associated with greenleaf manzanita in montane chaparral communities of northeastern California

    Authors: Valenti, Michael A.
    Published: U.S. Dept. of Agriculture, Forest Service, Pacific Southwest Research Station, 1997
    Other Authors: “…Ferrell, George T.…”
    Physical Description: 26 pages : digital, PDF file.
    Connect to online resource - All users (Federal Depository Library Program Persistant URL)
    Government Document Electronic eBook