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Sampling Western Spruce Budworm Larvae By Counting Larvae On Lower Crown Branches
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Book Synopsis Sampling Western Spruce Budworm Larvae by Counting Larvae on Lower Crown Branches by : Richard R. Mason
Download or read book Sampling Western Spruce Budworm Larvae by Counting Larvae on Lower Crown Branches written by Richard R. Mason and published by . This book was released on 1989 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sampling Western Spruce Budworm Larvae by Frequency of Occurrence on Lower Crown Branches by : Richard R. Mason
Download or read book Sampling Western Spruce Budworm Larvae by Frequency of Occurrence on Lower Crown Branches written by Richard R. Mason and published by . This book was released on 1990 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monitoring Larval Populations of the Douglas-fir Tussock Moth and the Western Spruce Budworm on Permanent Plots by : Robert R. Mason
Download or read book Monitoring Larval Populations of the Douglas-fir Tussock Moth and the Western Spruce Budworm on Permanent Plots written by Robert R. Mason and published by . This book was released on 1994 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Procedures for monitoring larval populations of the Douglas-fir tussock moth and the western spruce budworm are recommended based on many years experience in sampling these species in eastern Oregon and Washington. It is shown that statistically reliable estimates of larval density can be made for a population by sampling host trees in a series of permanent plots in a geographical monitoring unit. The most practical method is to estimate simultaneously densities on a plot of both insect species by the nondestructive sampling of foliage on lower crown branches of host trees. This can be done either by counting all larvae on sample branches or by estimating the frequency of occurrence of a selected threshold number of larvae in samples. Statistics are given on the expected within- and between-plot variances and the number of sample plots needed in different sized monitoring units. In large monitoring units, plot densities of tussock moth and budworm larvae usually are not normally distributed, but they can be normalized by logarithmic transformation to predict the probability of subpopulations of any given density occurring somewhere in the unit. It is urged that sampling methods be consistent and that monitoring be done annually to accumulate continuous databases that reflect the behavior of defoliator populations over a long period.
Book Synopsis Sampling Western Spruce Budworm Larvae by Counting Larvae on Lower Crown Branches by : Richard R. Mason
Download or read book Sampling Western Spruce Budworm Larvae by Counting Larvae on Lower Crown Branches written by Richard R. Mason and published by . This book was released on 1989 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Note PNW written by and published by . This book was released on 1988 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sampling Methods for Forest and Shade Tree Insects of North America by :
Download or read book Sampling Methods for Forest and Shade Tree Insects of North America written by and published by . This book was released on 2001 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monitoring Larval Populations of the Douglas-fir Tussock Moth and the Western Spruce Budworm on Permanent Plots by : Richard R. Mason
Download or read book Monitoring Larval Populations of the Douglas-fir Tussock Moth and the Western Spruce Budworm on Permanent Plots written by Richard R. Mason and published by . This book was released on 1994 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Managing Trees and Stands Susceptible to Western Spruce Budworm by : Martha H. Brookes
Download or read book Managing Trees and Stands Susceptible to Western Spruce Budworm written by Martha H. Brookes and published by . This book was released on 1985 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sampling Populations of Western Spruce Budworm and Predicting Defoliation on Douglas-fir in Eastern Oregon by : Valentine M. Carolin
Download or read book Sampling Populations of Western Spruce Budworm and Predicting Defoliation on Douglas-fir in Eastern Oregon written by Valentine M. Carolin and published by . This book was released on 1972 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis General Technical Report PNW-GTR by :
Download or read book General Technical Report PNW-GTR written by and published by . This book was released on 1994 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comparison of Western Spruce Budworm Populations and Damage on Grand Fir and Douglas-fir Trees by : Valentine M. Carolin
Download or read book Comparison of Western Spruce Budworm Populations and Damage on Grand Fir and Douglas-fir Trees written by Valentine M. Carolin and published by . This book was released on 1975 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Forest Health in the Blue Mountains by : Boyd E. Wickman
Download or read book Forest Health in the Blue Mountains written by Boyd E. Wickman and published by . This book was released on 1992 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Population Dynamics of the Major North American Needle-eating Budworms by : Robert W. Campbell
Download or read book Population Dynamics of the Major North American Needle-eating Budworms written by Robert W. Campbell and published by . This book was released on 1993 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Technical Report PSW. written by and published by . This book was released on 1978 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guide to Testing Insecticides on Coniferous Forest Defoliators by : Carroll B. Williams
Download or read book Guide to Testing Insecticides on Coniferous Forest Defoliators written by Carroll B. Williams and published by . This book was released on 1985 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Het rapport bevat richtlijnen voor onderzoek van insekticidentoediening in naaldbossen. In het Westen van de Verenigde Staten worden naaldbossen periodiek geinfecteerd met epidemische populaties van insekten die de bomen van hun naalden ontdoen. Ofschoon deze gids primair gebaseerd is op onderzoeken van populaties van naaldboomrupsen kan veel van de weergegeven informatie gebruikt worden voor andere insekten die de bomen van hun bladeren of naalde ontdoen
Book Synopsis Integrating Fire Management Analysis Into Land Management Planning by : Thomas John Mills
Download or read book Integrating Fire Management Analysis Into Land Management Planning written by Thomas John Mills and published by . This book was released on 1983 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Literature Review of the Spruce, Western, and 2-year-cycle Budworms by : Melvin E. McKnight
Download or read book A Literature Review of the Spruce, Western, and 2-year-cycle Budworms written by Melvin E. McKnight and published by . This book was released on 1968 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers 370 literature citations on the spruce (C. fumiferana (Clemens)), western (C. occidentalis Freeman), and 2-year-cycle (C. biennis Freeman) budworms through November 1967. Citations are also organized in a suject index.