Download or read book Pruning Dwarf Mistletoe Brooms Reduces Stress on Jeffrey Pines Cleveland National Forest California written by Robert F. Scharpf and published by . This book was released on 1987 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Western dwarf mistletoe (Arceuthobium campylopodum) is a damaging parasite of Jeffrey pines (Pinus jeffreyi) in southern California. Infected branches that develop into brooms are believed to reduce tlee vigor and increase mortality. Brooms were pruned from Jeffrey pines with varying levels of dwarf mistletoe infection and live crown. Many of the trees showed an increase in crown vigor when compared with unpruned trees after 5 years. Mortality was not reduced by pruning brooms, except during years of below-normal precipitation. Of the trees that died, most had little live crown, heavy dwarf mistletoe infection, and were also attacked by root diseases or insects or both. Reducing the stress of dwarf mistletoe by broom pruning to no less than 30 percent live crown helps to prevent mortality due to root disease and insect attack during years of below-normal precipitation.

Download or read book Pruning Dwarf Mistletoe Brooms Reduces Stress on Jeffrey Pines Cleveland National Forest California written by Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.) and published by . This book was released on 1987 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Western Dwarf Mistletoe Infects Understory Jeffrey Pine Seedlings on Cleveland National Forest California written by Robert F. Scharpf and published by . This book was released on 1986 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many young, understory Jeffrey pines (Pinus jefreyi Grev. & Balf.) were found to be infected by western dwarf mistletoe (Arcerrthobium cantpylopodurn Engelm.) on Laguna Mountain, Cleveland National Forest, in southern California. Under heavily infected overstory, about three-fourths of the young pines (about 15 years old on the average) were infected by dwarf mistletoe. Infections per tree averaged about two and a half, two-thirds of these on the bole. Attempts to regenerate Jeffrey pine under an infected overstory in southern California will probably lead to a severely infected and damaged understory. Planting nonhost species or resistant selections of Jeffrey pine would be practical in managing dwarf mistletoe on these highly valuable forest recreational areas.

Download or read book Management of Western Dwarf Mistletoe in Ponderosa and Jeffrey Pines in Forest Recreation Areas written by Robert F. Scharpf and published by . This book was released on 1988 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Management of Western Dwarf Mistletoe in Ponderosa and Jeffrey Pines in Forest Recreation Areas written by Robert F. Scharpf and published by . This book was released on 1988 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dwarf Mistletoes written by Frank G. Hawksworth and published by DIANE Publishing. This book was released on 1998-04 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: generalized life cycle; sexual reproductive biology; mechanism and trends of evolution; biogeography and paleogeographic history; host relationships; ecological relationships; biotic associates; host-parasite physiology; anatomy of the dwarf mistletoe shoot system; endophytic system; pathogenic effects; control; systematics: philosophy, problems, and criteria for classification; molecular systematics; formal taxonomy. Extensive bibliography. Scientific and common names; collecting and curating techniques; herbaria consulted; specimens examined; glossary; subject and species indexes.

Download or read book One Seed Source of Jeffrey Pine Shows Resistance to Dwarf Mistletoe written by Robert F. Scharpf and published by . This book was released on 1992 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Release of Douglas fir Seedlings written by Phillip M. McDonald and published by . This book was released on 1986 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Note RM written by and published by . This book was released on 1985 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Note RM written by and published by . This book was released on 1985 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Seed Dissemination in Small Clearcuttings in North central California written by Philip M. McDonald and published by . This book was released on 1980 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a 1964-1967 study on the Challenge Experimental Forest, seedfall was evaluated in 2-, 5-, and 10-acre circular clearcuttings. During the 4 years, 10 seed crops, ranging from light to bumper, were produced by ponderosa pine. white fir, Douglas-fir, and incense cedar. Seedfall ranged from 76 to 40,691 sound seed per acre (188 to 100,547/ha) for a single species in a given year. From 89 to 100 percent of each species' seed fell within an area 1 1/2 times the height of the average dominant tree. Overall, seed distribution was highly variable.

Download or read book Western Dwarf Mistletoe Infects Understory Jeffrey Pine Seedlings on Cleveland National Forest California written by Robert F. Scharpf and published by . This book was released on 1986 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1987 with total page 1104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1987 with total page 1108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book California Forest Health written by and published by . This book was released on 1994 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Forest Service Research Note written by United States. Rocky Mountain Forest and Range Experiment Stations, Fort Collins, Colo and published by . This book was released on 1988 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Pruning Bibliography written by Kevin Laughlin O'Hara and published by . This book was released on 1989 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: