Treesearch

This paper describes satellite data collected as part of the 2002/03 Cold Land Processes Experiment (CLPX). These data include multispectral and hyperspectral optical imaging, and passive and active microwave observations of the test areas. The CLPX multispectral optical data include the Advanced Very High Resolution Radiometer (AVHRR), the Landsat Thematic Mapper/Enhanced Thematic Mapper Plus (TM/ETM ), the Moderate Resolution Imaging Spectroradiometer (MODIS), and the Multi-angle Imaging Spectroradiometer (MISR). The spaceborne hyperspectral optical data consist of measurements acquired...

Concern has been noted over the lack of qualified applicants for vacancies in forest nursery positions. The University of Idaho Center for Forest Nursery and Seedling Research is uniquely qualified to address the issue of training given its faculty, staff, and resources. The keystone resource in this regard is the Franklin H. Pitkin Forest Nursery, a seedling production facility that operationally grows up to 500,000 plants per year for forestry, conservation, and restoration use in the Inland Northwest. This facility has an on-site research laboratory for conducting seedling quality...

(Please note: This paper only contains the abstract.) Trust is particularly vital in the leadership of organizations. Trust is built by working through "joy, fear, and vulnerability," especially as it relates to trust in others and in teams. Key is learning to trust the right people in the right way in the right circumstances. In addition to proven competence and confidence in a fellow employee's or teammate's ability to get a job done, creating a "trust space" requires 4 "people" practices: being truly open; really listening; developing common passion and/or purpose; and collaboratively...

Douglas-fir bark is a common waste product of forest industry, and has potential use as a substrate in container nurseries. Douglas-fir bark (DFB) is strongly acidic and contains amounts of phosphorus, potassium, iron, copper and manganese within or above the levels recommended for growing container crops. As the pH of DFB decreases, electrical conductivity and amounts of extractable phosphorus, calcium, magnesium, boron, and iron increase. Although liming unfertilized DFB with calcium carbonate up to 3 kg/m3 (5 lb/yd3) is effective at raising pH, the resulting pH is higher than desired...

Dry, south-facing slopes, such as those commonly found in north-central Idaho, often need to be planted more than once due to poor seedling survival. The Idaho State Forest Practices Act requires minimum stocking levels to be achieved within 5 years following harvest. However, this requirement can be difficult to meet based on seedling mortality due to moisture stress, vegetative competition, and animal browse. As container seedlings are useful in revegetating harsh sites (Walker and Kane 1997), a strong industry interest exists in determining optimal stocktypes for regenerating inland...

This review provides a brief biological outline of some species in the genus Fusarium and how these can be implicated as seedborne organisms leading to conifer seed and seedling losses in British Columbia. Fusarium spp. are implicated with pre- and post-emergence damping-off, seedling wilt, late damping-off, root rot, and seedling mortality after outplanting. Current understanding of Fusarium spp., with regard to cone and seed pest management in British Columbia, is outlined. Shortfalls that still exist and how these might be addressed with the development of a vision for better understandi...

We studied the short-term (7-day) physiological responses of planting thawed and frozen root plugs of Douglas-fir (Pseudotsuga menziesii) seedlings in 2 separate experiments under cool-moist and warm-dry growing conditions, respectively. Our results showed that shoot water potential, root hydraulic conductance, net photosynthesis (A), and transpiration (E) were significantly lower in frozen seedlings compared with thawed seedlings under both growing conditions. Chlorophyll fluorescence values in frozen and thawed seedlings were similar throughout the measurement period at both growing...

The use of tree improvement practices to enhance the genetic characteristics of planted seedlings is a forestry practice that consistently shows a high return on investment by increasing yields obtained from planted forests. The use of improved seeds is an effective way of bringing genetic improvement to forest regeneration programs. Seed orchards are currently used to produce seeds in large commercial quantities from trees having desired genetic traits. However, improved seeds do not provide a method to multiply specific varieties that have desirable traits. Vegetative propagation...

Forest tree nurseries rely on a tight scheduling of operations to be able to deliver vigorous seedlings to the planting site. Cooler or freezer storage is often used to maintain planting stock in an inactive condition and to ensure a plant supply for geographically diverse planting sites, which is a requirement for large-scale or internationally operating nurseries.

Protecting planted western redcedar (Thuja plicata) seedlings from deer browse in the Pacific Northwest and British Columbia is estimated to cost up to CAN$ 25 million annually. Recent studies linking deer browse and needle monoterpenes has resulted in the initiation of a breeding program for deer-resistant western redcedar at Cowichan Lake Research Station on Vancouver Island. Selections that are not preferred by deer are currently going through "non-preferred" rapid breeding and testing cycles for enhanced needle monoterpene concentrations. However, planting stock with increased monoterpe...