Download or read book The Effects of Fertilization and Competition Control on Loblolly Pine written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We studied the effects of annual fertilization (F) and eliminating inter-specific competition via herbicides (H) on loblolly pine productivity and growth allocation. Both treatments increased above ground growth, alone and in combination, relative to the control treatment. The primary effect seems to have been the result of a reallocation of growth above ground from roots, due especially to a reduction in fine root production. Fertilization with nitrogen had the greatest single effect, and the stands we studied are continuing to respond to annual fertilization, largely through the positive effect nitrogen is having on leaf area (and hence photosynthetic area) and canopy nitrogen (which is directly related to ability of the canopy to fix carbon). Herbicide, alone or with fertilizer, caused the greatest reduction in fine root mass and production, but the above ground effects were relatively short-lived. In the combined treatment, trees benefited from the significant reduction in roots associated with herbicide and the enhanced canopy development associated with fertilization. We have used the results of our field research to both construct a new process-based model of forest growth, and to parameterize an existing model for use in our ecosystems. The results of our field experiments and modeling efforts are helping forest managers to better understand the effects of forest management practices on forest growth, and ultimately will help improve the efficacy of such practices.

Download or read book The Effects of Fertilization and Competition Control on Carbon and Nutrient Allocation and Physiology in Loblolly Pine Plantation Quarterly Report for the Period July September 1999 written by and published by . This book was released on 1999 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Fertilization and Competition Control on Carbon and Nutrient Allocation and Physiology in Loblolly Pine Plantation Quarterly Report for the Period October December 1999 written by and published by . This book was released on 1999 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fertilization to accelerate loblolly pine foliage growth for erosion control written by Paul D. Duffy and published by . This book was released on 1977 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Leaf Area and Net Photosynthesis in Loblolly Pine written by Gregory Todd Munger and published by . This book was released on 2001 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fertilizer Responses of Longleaf Pine Trees Within a Loblolly Pine Plantation written by Peter H. Anderson and published by . This book was released on 2009 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Evidence is mixed on how well longleaf pine (Pinus palustris Mill.) responds to increased soil nitrogen via fertilization. We examined growth and physiological responses of volunteer longleaf pine trees within an intensive loblolly pine (P. taeda L.) fertilization experiment. Fertilizer was applied annually following thinning at age 8 years (late 1992) at rates tailored to maintain a high needle nitrogen concentration. We measured the annual growth of 20 volunteer longleaf pine trees per treatment. We took bimonthly gas exchange measures on 12 longleaf pine trees per treatment from June 1999 through June 2000, after which we estimated carbon isotope discrimination and foliar nitrogen concentration on foliage. The impact of fertilization in both growth and gas exchange was dependent on competition for light with neighboring loblolly pine trees. When fertilized longleaf pine trees were separated into categories with respect to being dominant or suppressed (relative to the loblolly pine trees) dominant-fertilized trees had the lowest carbon isotope discrimination, increased photosynthesis, and decreased stomatal conductance, indicating greater water use efficiency in these trees. Compared to loblolly pine, longleaf pine growth is restricted less by poor soil nutrition. However, early rotation longleaf pine appears to have the potential to increase growth rate via fertilization to almost the same extent as loblolly pine.S3.

Download or read book The Effects of Fertilization on Growth and Nutrient Concentration in Young Loblolly Pine written by Robert Glenn Merrifield and published by . This book was released on 1967 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fertilizer Responses of Volunteer Longleaf Pine Trees Within a Loblolly Pine Plantation written by Peter H. Anderson and published by . This book was released on 2009 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evidence is mixed on how well longleaf pine (Pinus palustris Mill.) responds to increased soil nitrogen via fertilization. We examined growth and physiological responses of volunteer longleaf pine trees within an intensive loblolly pine (P. taeda L.) fertilization experiment. Fertilizer was applied annually following thinning at age 8 years (late 1992) at rates tailored to maintain a high needle nitrogen concentration. We measured the annual growth of 20 volunteer longleaf pine trees per treatment. We took bimonthly gas exchange measures on 12 longleaf pine trees per treatment from June 1999 through June 2000, after which we estimated carbon isotope discrimination and foliar nitrogen concentration on foliage. The impact of fertilization in both growth and gas exchange was dependent on competition for light with neighboring loblolly pine trees. When fertilized longleaf pine trees were separated into categories with respect to being dominant or suppressed (relative to the loblolly pine trees) dominant-fertilized trees had the lowest carbon isotope discrimination, increased photosynthesis, and decreased stomatal conductance, indicating greater water use efficiency in these trees. Compared to loblolly pine, longleaf pine growth is restricted less by poor soil nutrition. However, early rotation longleaf pine appears to have the potential to increase growth rate via fertilization to almost the same extent as loblolly pine.

Download or read book Competition density effects in a loblolly pine seedling stand written by William R Harms and published by . This book was released on 1977 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Site Preparation Fertilization and Weed Control Effects on Two year Old Loblolly Pine written by North Carolina State Forest Fertilization Cooperative and published by . This book was released on 1984 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Harvest Utilization Site Preparation and Vegetation Control on Growth of Loblolly Pine on a Piedmont Site written by and published by . This book was released on 1995 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the 13th Biennial Southern Silvicultural Research Conference written by Kristina Frances Connor and published by . This book was released on 2006 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book General Technical Report SO written by and published by . This book was released on 1977 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Seasonal and Cumulative Loblolly Pine Development Under Two Stand Density and Fertility Levels Through Four Growing Seasons written by James D. Haywood and published by . This book was released on 1994 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Biennial Southern Silvicultural Research Conference written by and published by . This book was released on 2006 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Site Preparation and Early Fertilization and Weed Control on 14 year Old Loblolly Pine Growth written by North Carolina State Forest Nutrition Cooperative and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Site Preparation and Early Fertilization and Weed Control on 14 year Loblolly Pine Growth written by and published by . This book was released on 1996 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: