Index Catalog // ScholarsArchive@OSU

Creator:: James, Robert L., United States. Forest Health Protection, and United States. Forest Service. Northern Region
Abstract:: Soil in Field 2 at the USDA Forest Service Nursery, Coeur d'Alene, Idaho was assayed six times over a 2-year fallow period for potentially pathogenic Fusarium and Pythium spp. following incorporation of a corn cover/green manure crop. Populations of potentially disease-antagonistic Trichoderma spp. were also assayed. Soil populations of Fusarium...
Resource Type:: Technical Report
Full Text:: potentially pathogenic fungi may persist and present a threat to the future seedling crop (James et al. 1996

Creator:: James, Robert L. and United States. Forest Service. Northern Region
Abstract:: Investigations were conducted to determine importance of Fusarium as a pathogen on Douglas-fir seed and containerized seedlings at the Plum Creek Nursery during 1985. Fusarium oxvsnorum was occasionally isolated from necrotic lesions on young germinants that lacked foliar symptoms. Low levels of F. oxvsnorum were detected on three of four...
Resource Type:: Technical Report
Full Text:: cjc\n, sr d R. L. James, Plant Pathologist ":33 Lc-r u • Jr 41 CP)P f"? ABSTRACT

Creator:: James, Robert L., Woollen, R. L., and United States. Forest Service. Northern Region
Abstract:: Treating styroblock containers in hot water (68°C) with a very dilute bleach and detergent solution effectively reduced populations of Fusarium and Cylindrocarpon spp., two potential root pathogens of containerized conifer seedlings. However, the treatment did not significantly reduce levels of Phoma (another potential pathogen) nor saprophytic Penicillium and Alternaria spp....
Resource Type:: Technical Report
Full Text:: species (mostly F. oxysporum Schlect.), has been a recurring problem at this nursery (James 1986a, 1986b

Creator:: James, Robert L. and United States. Forest Service. Northern Region
Abstract:: Causes of mortality of containerized western larch seedlings at the Champion Timberlands Nursery, Plains, Montana, were investigated. Seedlings were rated for disease severity based on extent of foliar decline symptoms and fungal isolations made from their roots. Isolations were also made from selected larch seed. Consistent associations between root colonization...
Resource Type:: Technical Report
Full Text:: ABSTRACT \f o,_ tc‘ --,\.. ''261Z9GNI by Robert L. James• • • • • • AT-11-144 4A5 no. 8(9- 110

Creator:: James, Robert L. and United States. Forest Service. Northern Region
Resource Type:: Technical Report
Full Text:: 1988 A- 3 M ICROWAVE TREATMENTS TO ERADICATE SEEDBORNE FUNGI • ". 8- ON DOUGLAS-FIR SEED R. L. James

Creator:: James, Robert L., Trent, Andy, and United States. Forest Service. Northern Region
Abstract:: Tests were conducted to evaluate efficacy of dry heat (82.2°C for 10, 20, and 60 minutes) to reduce colonization by selected fungi within styroblock containers and residual seedling roots left in containers after seedling extraction. Dry heat alone was generally ineffective in significantly reducing fungal colonization. However, simply wetting container...
Resource Type:: Technical Report
Full Text:: Pest Management. Nursery Disease Notes No. 101. 4p. James, R.L. and A. Trent. 2001. Effects of radio

Creator:: James, Robert L. and United States. Forest Service. Northern Region
Abstract:: Cones of Douglas-fir and ponderosa pine with extensive mold on external portions of scales were sampled for presence of fungi potentially pathogenic to conifer seedlings in nurseries. The major colonizers of cone scales and external seedcoats for both conifer species were Trichoderma spp. Penicillium spp. were also very common. The...
Resource Type:: Technical Report
Full Text:: squirrel caches, they are likely to become infected with a number of different fungi (James 1986). Also

Creator:: James, Robert L., Woo, John You, and United States. Forest Service. Northern Region
Resource Type:: Technical Report
Full Text:: -FIR AND ENGELMANN SPRUCE GERMLINGS e by R. L. James 1/ Plant Pathologist • • and INTRODUCTION

Creator:: James, Robert L. and United States. Forest Service. Northern Region
Resource Type:: Technical Report
Full Text:: SEED FROM THE TOWNER NURSERY, NORTH DAKOT by R. L. James Plant Pathologist INTRODUCTION 51)1 1

Creator:: James, Robert L. and United States. Forest Service. Northern Region
Abstract:: Five seedlots of Colorado blue spruce and three seedlots of Black Hills spruce were sampled for Fusarium contamination. All seedlots contained some seed and/or debris with Fusarium. Levels of contamination were greatly reduced by treating seed with running water rinses for 48 hours or with chemical sterilants such as sodium...
Resource Type:: Technical Report
Full Text:: DAKOTA • by R. L. James, Plant Pathologist • • MEE= Five seedlots of Colorado blue spruce and three

ScholarsArchive@OSU