{"title":"Disproportionality, social marketing, and biomass availability: a case study of Virginia and North Carolina family forests.","authors":"M. Brinckman, J. Munsell","doi":"10.5849/SJAF.10-052","DOIUrl":"https://doi.org/10.5849/SJAF.10-052","url":null,"abstract":"","PeriodicalId":51154,"journal":{"name":"Southern Journal of Applied Forestry","volume":"36 1","pages":"85-91"},"PeriodicalIF":0.0,"publicationDate":"2012-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5849/SJAF.10-052","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70978497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. Blinn, T. Albaugh, T. Fox, R. Wynne, J. Stape, R. Rubilar, H. L. Allen
{"title":"A Method for Estimating Deciduous Competition in Pine Stands Using Landsat","authors":"C. Blinn, T. Albaugh, T. Fox, R. Wynne, J. Stape, R. Rubilar, H. L. Allen","doi":"10.5849/SJAF.10-034","DOIUrl":"https://doi.org/10.5849/SJAF.10-034","url":null,"abstract":"","PeriodicalId":51154,"journal":{"name":"Southern Journal of Applied Forestry","volume":"36 1","pages":"71-78"},"PeriodicalIF":0.0,"publicationDate":"2012-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5849/SJAF.10-034","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70978027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Evaluating Forest Vegetation Simulator predictions for southern Appalachian upland hardwoods with a modified mortality model","authors":"P. Radtke, Nathan Herring, D. Loftis, C. Keyser","doi":"10.5849/SJAF.10-017","DOIUrl":"https://doi.org/10.5849/SJAF.10-017","url":null,"abstract":"Prediction accuracy for projected basal area and trees per acre was assessed for the growth and yield model of the Forest Vegetation Simulator Southern Variant (FVS-Sn). Data for comparison with FVS-Sn predictions were compiled from a collection of n 1,780 permanent inventory plots from mixed-species upland hardwood forests in the Southern Appalachian Mountains. Over a 5-year projection interval, baseline FVS-Sn predictions fell within 15% of observed values in over 88% of the test plots. Several modifications to FVS-Sn were pursued, including a refitting of the background mortality equation by logistic regression. Following the modifications, FVS-Sn accuracy statistics increased to 91 and 94% for basal area and trees per acre, respectively. In plots with high initial stand densities, notable gains in accuracy were achieved by relaxing thresholds that activated a density-dependent mortality algorithm in FVS-Sn. Detailed accuracy results for forest types of the region were generated. Twenty-five-year projection results show size-density trajectories consistent with the concept of maximum stand density index.","PeriodicalId":51154,"journal":{"name":"Southern Journal of Applied Forestry","volume":"36 1","pages":"61-70"},"PeriodicalIF":0.0,"publicationDate":"2012-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5849/SJAF.10-017","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70978453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Conrad, W. Ford, M. C. Groover, M. Bolding, W. M. Aust
{"title":"Virginia Tech Forest Road and Bladed Skid Trail Cost Estimation Method","authors":"J. Conrad, W. Ford, M. C. Groover, M. Bolding, W. M. Aust","doi":"10.5849/SJAF.10-023","DOIUrl":"https://doi.org/10.5849/SJAF.10-023","url":null,"abstract":"","PeriodicalId":51154,"journal":{"name":"Southern Journal of Applied Forestry","volume":"36 1","pages":"26-32"},"PeriodicalIF":0.0,"publicationDate":"2012-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5849/SJAF.10-023","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70978338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. Wigley, C. Hedman, C. Loehle, M. Register, Jeremy R. Poirier, Paul E. Durfield
{"title":"Density of Gopher Tortoise Burrows on Commercial Forestland in Alabama and Mississippi","authors":"T. Wigley, C. Hedman, C. Loehle, M. Register, Jeremy R. Poirier, Paul E. Durfield","doi":"10.5849/SJAF.10-050","DOIUrl":"https://doi.org/10.5849/SJAF.10-050","url":null,"abstract":"","PeriodicalId":51154,"journal":{"name":"Southern Journal of Applied Forestry","volume":"36 1","pages":"38-43"},"PeriodicalIF":0.0,"publicationDate":"2012-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5849/SJAF.10-050","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70978872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Use of Glyphosate and Imazapyr for Cogongrass (Imperata cylindrica) Management in Southern Pine Forests","authors":"P. Minogue, J. H. Miller, D. Lauer","doi":"10.5849/SJAF.10-025","DOIUrl":"https://doi.org/10.5849/SJAF.10-025","url":null,"abstract":"targeted; thus, systemic herbicides offer one of the most effective tools in an integrated treatment approach. Cogongrass leaves grow directly from buds along rhizomes, without aboveground stems, and may reach 1.5 m in height (Holm et al. 1977, Bryson and Carter 1993). Because shoot meristems are below ground, cogongrass is tolerant of mowing and grazing. Cogongrass is fire tolerant, even though fires are intense during both the growing season and the winter, when the dry thatch remains standing (Dozier et al. 1998). Cogongrass rhizomes have buds at each node that are spaced 1–2 cm apart along the entire length of the rhizome. Rhizomes branch frequently, forming dense mats that can exclude most other vegetation (Ayeni 1985). Rhizome entanglements can fill the upper soil to more than 30 cm deep, they typically make up more than 60% of the total plant biomass, and they are allelopathic to some grass seeds (Sajise 1976, Koger and Bryson 2003). Rapid aboveground regrowth from the rhizomes is stimulated by mowing, disking, burning, or ineffective herbicide treatment (Sajise 1976, Willard et al. 1996, Lippincott 2000). Therefore, rhizomes must be completely killed, leaving no living segments, to achieve eradication. Difficulty in achieving eradication is thought to increase with infestation age as the rhizome mat density and depth increase, although this has not been fully tested. The influence of the soil seed bank on eradication is not a primary concern during local eradication efforts. Prolific numbers of wind-dispersed seeds are produced by cogongrass, but viability is highly variable and declines rapidly after 1 year (Shilling et al. 1997, Dozier et al. 1998). Therefore, seed longevity in the soil seed bank is not a primary concern with regrowth after treatment, whereas spread to nearby mineral soil is a concern. Repeated applications of herbicides, commonly applied in summer to early fall, are required for cogongrass control. Prescribed burning in late winter or early spring preceding treatment is common (Miller 2007b). However, the benefits of burning to eliminate winter thatch have been questioned. Although this approach may allow for more effective herbicide applications early in the spring, burning has been reported to stimulate rhizome initiation and branching, increasing plant density, flowering, and outward spread rates while killing constraining shrubs (Bryson and Carter 1993, Lippincott 2000, Yager et al. 2010). Burning can also produce bare areas favorable for cogongrass seed germination (Yager 2007). Research in Florida and Asia has identified glyphosate, imazapyr, and the combination of these herbicides as the most effective herbicides for controlling cogongrass, although to date, eradication has not been reported even with retreatments (Brook 1989, Willard et al. 1996, 1997). Both glyphosate and imazapyr are readily absorbed by the foliage and translocated to rhizomes (Townson and Butler 1990). Soil-active imazapyr is also absorbed t","PeriodicalId":51154,"journal":{"name":"Southern Journal of Applied Forestry","volume":"36 1","pages":"19-25"},"PeriodicalIF":0.0,"publicationDate":"2012-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5849/SJAF.10-025","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70978352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Rotation-Age Results from a Loblolly Pine Spacing Trial","authors":"R. Amateis, H. Burkhart","doi":"10.5849/SJAF.10-038","DOIUrl":"https://doi.org/10.5849/SJAF.10-038","url":null,"abstract":"This study reports cubic-foot volume yields for particular product definitions from a 25-year-old loblolly pine spacing trial and shows how closely, in the absence of thinning, total and merchantable wood production are linked to initial spacing. Results at the close of the study indicate that (1) high-density plantations can be managed on short rotations for woody biomass production; (2) pulpwood yields can be maximized at a planting density in the neighborhood of 680 trees/ac; (3) the production of solidwood products, without imposing thinning, requires lower establishment densities, with as few as 300 trees/ac planted resulting in a substantial proportion of the total yield recovered as large sawtimber; and (4) a ratio of between-row to within-row planting distances of at least 3:1 does not substantially affect yield production. Considered together, the results of this study suggest that no single planting density is optimal for the wide array of product objectives for which loblolly pine is managed in the South. Rather, managers must select an appropriate planting density in view of the products anticipated at harvest.","PeriodicalId":51154,"journal":{"name":"Southern Journal of Applied Forestry","volume":"161 1","pages":"11-18"},"PeriodicalIF":0.0,"publicationDate":"2012-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5849/SJAF.10-038","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70978044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}