Treesearch

Long-term effects of site preparation, as well as effects of application timing with the new formulation, were unknown, and the information was needed for operational decisions.

Renewed efforts in longleaf pine (Pinus palustris Mill.) ecosystem restoration has increased interest in the commercial production of understory herbaceous species. Successful establishment of understory herbaceous species is enhanced when using quality nursery-grown plants that have a better chance of survival after outplanting. Nursery growing practices have not been clearly identified for propagating longleaf pine understory herbaceous species, especially for controlling weeds that can reduce plant growth in containers. To identify potential herbicides that could safely be applied...

Seedling survival in loblolly pine (Pinus taeda L.) plantation establishment is often mentioned as a justification for herbaceous weed control (HWC). However, the effects of HWC treatment during drought have been difficult to find. Sometimes this research was proprietary in nature. Also, since weather patterns vary from year to year, drought may not have coincided with a research study.In the spring of 2007, a demonstration for a HWC comparison was installed on retired pasture at the North Branch Station near Holly Springs, MS. Second-generation loblolly seedlings from Weyerhaeuser were...

The purpose of this study was to assess sprout size as a determinant of subsequent control by a standard, single rate of imazapyr +glyphosate applied during site preparation. All study sites were in the hilly upper coastal plain of Mississippi (Winston or Oktibbeha Counties) or Louisiana (Sabine or Winn Parishes) and supported loblolly pine (Pinus taeda L.) plantations prior to installation of this project.

Black willow (Salix nigra Marsh.) and eastern cottonwood (Populus deltoides Bartram ex Marsh.), two species native in the Lower Mississippi Alluvial Valley, have importance in short rotation woody crop (SRWC) systems for biomass production (Ruark 2006).

Non-native invasive Chinese tallow trees [Triadica sebifera (L.) Small,formerly Sapium sebiferum (L.) Roxb.] are rapidly spreading into natural ecosystems such as forests in the southeastern United States. Using the 2001-2010 USDA Forest Service’s Forest Inventory and Analysis (FIA) data and forest land cover data, we estimated the regional invasibility of major forest types (groups), loblolly/shortleaf pine forests and oak/gum/cypress forests, by using Geographic Information Systems (GIS) and geostatistical tools. We defined the regional invasibility of a forest ecosystem as its susceptibi...

Pondberry [Lindera melissifolia (Walt.) Blume] is a federally endangered woody shrub in the Lauraceae family. The U.S. Fish and Wildlife Service developed a recovery plan in 1993 that emphasized the need to study pondberry biology and ecology and to develop management practices that would promote recovery and conservation of this species. We initiated a large-scale study in 2005 to determine the effects of soil flooding and light availability on pondberry survival and growth. The study was conducted in Sharkey County, MS in a network of research impoundments known as the Flooding Research...

This study is part of a larger collaborative effort to determine the overall environmental sustainability of intercropping pine (Pinus taeda L.) and switchgrass (Panicum virgatum L.), both of which are promising feedstock for bioenergy production in the Lower Coastal Plain in North Carolina.

Longleaf pine (Pinus palustris Mill.) has irreplaceable ecological value in the southeastern United States. However, longleaf pine-grassland ecosystems have been dramatically declining since European settlement. From the aspect of longleaf pine restoration and management, this study calculated longleaf pine importance values in each southern county and then conducted preliminary analysis based on spatial autocorrelation statistics and quantile regression. This study estimated current longleaf pine spatial distribution characteristics and the relationship between species dominance and...

Hybrids between shortleaf pine (Pinus echinata Mill.) and loblolly pine (P. taeda L.) have dramatically increased since the 1950s (Stewart and others 2012). Fire suppression, planting nonnative seed sources, and other anthropogenic activities have the potential to break down ecological barriers that previously kept these species from interbreeding (Tauer and others 2012). We compared artificial F1 shortleaf x loblolly pine hybrids to their parents in a 3-year study in Oklahoma.