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Book Vegetation Trends in a Young Ponderosa Pine Plantation Treated by Manual Release and Mulching

Download or read book Vegetation Trends in a Young Ponderosa Pine Plantation Treated by Manual Release and Mulching written by Philip M. McDonald (Research forester) and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Timing and Duration of Release Treatments Affect Vegetation Development in a Young California White Fir Plantation

Download or read book Timing and Duration of Release Treatments Affect Vegetation Development in a Young California White Fir Plantation written by Philip M. McDonald and published by . This book was released on 2001 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Development of Vegetation in a Young Ponderosa Pine Plantation

Download or read book Development of Vegetation in a Young Ponderosa Pine Plantation written by Philip M. McDonald and published by . This book was released on 2007 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: The density and development of deerbrush (Ceanothus integerrimus Hook. & Arn.), other shrubs, forbs, graminoids, and ponderosa pine (Pinus ponderosa Dougl. ex Laws. var. ponderosa) seedlings were evaluated in a young plantation in northern California from 1988 through 1997. Treatment regimes consisted of manual release (grubbing) over 3 to 6 years and resulted in vegetation recovery times of 4 to 10 years. Revegetation was remarkably diverse, rapid, and vigorous. At the end of the study, the dominant shrub, deerbrush, had significantly lower average density and foliar cover relative to the control when treated either the first 3 years or the second 3 years, but average height was similar regardless of treatment. Average density of the 11 other shrubs was statistically higher in the control relative to other treatments, but cover and height did not differ. Density, foliar cover, and height of the forbs and graminoids did not differ among treatments at the end of the study. In the control, deerbrush plants numbered 6,100 per acre; other shrubs, 2,550 per acre; forbs, 27,300 per acre; and graminoids, 5,800 plants per acre in 1997. Foliar cover of deerbrush at 22,700 ft2 per acre was more than five times that of all other naturally established species combined and slightly exceeded that of pine seedlings in all treatments.

Book Proceedings National Silvicultural Workshop

Download or read book Proceedings National Silvicultural Workshop written by and published by . This book was released on 2001 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Publications List

Download or read book Publications List written by and published by . This book was released on 1993 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Proceedings RMRS

Download or read book Proceedings RMRS written by and published by . This book was released on 1998 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Publications Quarterly List

Download or read book Publications Quarterly List written by and published by . This book was released on 1998 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Ponderosa Pine Seedlings and Competing Vegetation

Download or read book Ponderosa Pine Seedlings and Competing Vegetation written by Philip M. McDonald and published by . This book was released on 1990 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foresters often need information on the cost effectiveness of manual and chemical release treatments for individual and combined species in young mixed-shrub communities. A study in northern Califomia evaluated five manual and chemical treatments and their effect on several shrubs and grasses. Treatments were grubbing at age 1 to 2- and 4 ft (0.6- and 1.2-m) radii, regrubbing and expanding the 2-ft radii to 4 ft, regrubbing and expanding the 4-ft radii to 6 A (1.8 m) at age 4, and applying Velpar herbicide to the entire plot at age 2. Five years after initial manual release and 4 years after chemical release, ponderosa pine (Pinus ponderosa Dougl. ex Laws. var. ponderosa) stem caliper at 12 in. (30 cm) above mean ground line differed significantly between Velpar and the untreated control, 2-ft radius, 4-ft radius, and 2-ft radius expanded to 4 ft. Expanding the radius from 4 to 6 feet provided a pine stem caliper that differed significantly from that in the control, and the 2-ft and 4-ft radii treatments. Additional analyses with ponderosa pine seedling height also indicated significant differences among treatmenu that were generally similar to those above. Differences among the six treatments, which are presented in 15 comparisons of stem caliper and treatment production rates, provide forest managers with growth and cost comparisons, and should aid them in selecting the release treatment best suited to their particular situation.

Book Bibliography of Agriculture

Download or read book Bibliography of Agriculture written by and published by . This book was released on 1998 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt: