Download or read book The Effects of Mechanical and Chemical Site Preparation on Ponderosa Pine Pinus Ponderosa Dougl Ex Laws and Lodgepole Pine Pinus Contorta Dougl Ex Loud Performance Associated Vegetation and Soil Properties in Southcentral Oregon Eight Years After Planting written by Darrell W. Ross and published by . This book was released on 1985 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of six alternative site preparation treatments were compared at three different sites in southcentral Oregon. Treatments included a logged-only control, ripping, brushblading, disking, chemical, and chemical followed by disking. Subplots containing ponderosa pine bareroot (2+0) and containerized (1+0) and lodgepole pine containerized (1+0) seedlings were also included in the experiment. The study involved the remeasurement of the plots eight growing seasons after establishment. The treatments were evaluated based on changes in selected soil chemical and physical properties, the response of non-conifer vegetation, and the survival and growth of the planted pines. Soil samples were analyzed for total N, total S, total C, and extractable phosphorus. Bulk density was also determined for each sample. In general, the brushblade and chemical/disk treatments caused the greatest reduction in nutrient levels and the greatest increase in bulk density compared to the control arid other treatments. The greatest differences in the amount of non-conifer vegetation among site preparation treatments were observed at the low elevation site (East Aspen), which supported an established shrub community prior to treatment. Total aboveground biomass of shrubs was highest on the control plot. Ripping had the second highest shrub biomass, followed by the disk, brushblade, chemical, and chemical/disk treatments. Plant communities at the higher elevation sites (Swede Cabin and Camp Nine) were primarily composed of grass, sedge, and forb species with scattered shrubs. In general, the control and rip plots had the highest canopy coverage of herbaceous vegetation at these sites, followed by the brushblade, disk, chemical/disk, and chemical treatments. Pine survival was satisfactory for all treatments except the rip and control plots at East Aspen and Swede Cabin. Survival was low for all treatments at Camp Nine. The greatest differences in conifer height growth among site preparation treatments occurred at East Aspen. At this site, the chemical/disk and chemical treatments resulted in a substantial increase in height growth compared to the control. Disking, brushblading, and ripping also increased height growth, but to a lesser extent. All of the treatments except ripping were equally effective at Swede Cabin in increasing height growth compared to the control. At Camp Nine, the effect of treatments with respect to height growth was the same as that at East Aspen, although the magnitude of the differences was less. The results of this study indicate the importance of controlling competing vegetation in order to achieve maximum survival and early growth of planted pines in southcentral Oregon.

Download or read book An Annotated Bibliography on Site Preparation written by Kate Wood and published by [Thunder Bay, Ont.] : Northwest Region Science and Technology. This book was released on 1994 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication provides the most current available information on mechanical and chemical site preparation and its subsequent effect on vegetation. Other relevant topics related to the subject were also included.

Download or read book Canadian Journal of Forest Research written by and published by . This book was released on 1989 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Bulletin written by and published by . This book was released on 1984 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Weed Control for Forest Productivity in the Interior West written by and published by . This book was released on 1986 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forestry Theses Accepted by Colleges and Universities in the United States written by and published by . This book was released on 1981 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forestry Theses Accepted by Colleges and Universities in the United States July 1981 June 1990 written by and published by . This book was released on 1994 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanical and Chemical Release in a 12 year old Ponderosa Pine Plantation written by Gary Fiddler and published by . This book was released on 1997 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Preemergent Herbicides for Preparing Ponderosa Pine Planting Sites in the Southwest written by L. J. Heidmann and published by . This book was released on 1970 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Relationship of Needle Surface Area to Needle Volume in Ponderosa Pine and Lodgepole Pine written by W. Lopushinsky and published by . This book was released on 1970 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of a Prescribed Burn in Ponderosa Pine on Inorganic Nitrogen Concentrations of Mineral Soil written by Michael G. Ryan and published by . This book was released on 1986 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Should Ponderosa Pine be Planted on Lodgepole Pine Sites written by P. H. Cochran and published by . This book was released on 1984 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Steaming Ponderosa Pine Pinus Ponderosa Laws on Its Mechanical and Chemical Properties written by Hedy Liu and published by . This book was released on 1970 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Response of Ponderosa Pine 8 Years After Fertilization written by P. H. Cochran and published by . This book was released on 1977 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ponderosa pine response to fertilization written by Robert F. Powers and published by . This book was released on 1978 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: First-year results of fertilization in a young ponderosa pine plantation on two contrasting soils were analyzed. Trees testing low in foliar nitrogen responded strongly to fertilization where brush had been removed, but failed to respond if brush remained. Height growth was doubled by certain treatment combinations on the less fertile Mariposa soil, but was not influenced by treatment on the more fertile Cohasset. Brush removal increased needle weight for trees on both soils. Increases in foliar biomass and nitrogen content of trees on treated plots suggest that rapid growth rates will continue.

Download or read book Soil Compaction and Initial Height Growth of Planted Ponderosa Pine written by P. H. Cochran and published by . This book was released on 1985 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Southwestern Ponderosa Pine Mortality on Potential Wood Product Recovery written by Ronald A. Senn and published by . This book was released on 1981 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: