Download or read book Proceedings Forest Defoliator host Interactions written by Michael Montgomery and published by . This book was released on 1983 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings written by and published by . This book was released on 1983 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings Forest Defoliator host Interactions written by Northeastern Forest Experiment Station (Radnor, Pa.) and published by . This book was released on 1983 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings written by and published by . This book was released on 1983 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings Forest Defoliator host Interactions written by and published by . This book was released on 1983 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings written by and published by . This book was released on 1983 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advancing Knowledge of Forests and Rangelands written by United States. Forest Service and published by . This book was released on 1985 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings written by Michael L. McManus and published by . This book was released on 1998 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Technical Report NE written by and published by . This book was released on 1980 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tree Defects written by Alex L. Shigo and published by . This book was released on 1983 with total page 882 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recent Reports written by and published by . This book was released on 1977 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Paper PNW written by and published by . This book was released on 1978 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Variation in Phenology and Monoterpene Patterns of Defoliated and Nondefoliated Douglas fir pseudotsuga Menziesii Var Glauca written by and published by . This book was released on 1993 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Technical Report WO written by and published by . This book was released on 1975 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanisms of Woody Plant Defenses Against Insects written by William J. Mattson and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
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:
