Common Sawflies Feeding on White Birch in the Forested Areas of Manitoba and Saskatchewan

1954 ◽  
Vol 86 (4) ◽  
pp. 154-158 ◽  
Author(s):  
H. R. Wong
Keyword(s):  
United States ◽  
The United States ◽  
Biological Information ◽  
Betula Papyrifera ◽  
White Birch ◽  
Forested Areas

Twelve species of sawflies are common on white birch (Betula papyrifera Marsh.) in the forested areas of Manitoba and Saskatchewan. They also occur in Fastern Canada and the United States. A key is presented at the end of the paper by which the late instars of these twelve species can be identified. The immature forms of these species were described by Dyar (1893, 1895a, 1895b, 1895c), Middleton (1915, 1922) and Riley (1890). Unfortunately these descriptions are scattered in several publications, and in most cases the names of the genera or species in the original descriptions have been changed (Ross 1951). This paper brings together the current nomenclature and some biological information on these species.

The biology of Canadian weeds. 108. Erucastrum gallicum (Willd.) O.E. Schulz

1998 ◽  
Vol 78 (1) ◽  
pp. 155-165 ◽  
Author(s):  
Suzanne I. Warwick ◽  
David A. Wall
Keyword(s):  
United States ◽  
Reproductive Output ◽  
Agronomic Traits ◽  
Crop Improvement ◽  
The United States ◽  
Biological Information ◽  
Close Relative ◽  
Weed Biology ◽  
Germplasm Resource ◽  
Winter Annual

A review of biological information is provided for Erucastrum gallicum (Willd.) O.E. Schulz. A European native, it was introduced into Canada and the United States in the early 1900s and spread rapidly along the railroads. The species occurs in all the provinces and the Northwest Territories and is particularly abundant in the Prairie provinces and mid-western United States. It is a summer annual, rarely a winter annual or biennial species, and is characterized by high reproductive output. Plants occur most commonly on waste ground and along roadsides and railroads, followed by agricultural fields. Erucastrum gallicum is of allopolyploid origins (n = 15, 7 + 8 chromosomes), and contains a single multi-locus isozyme genotype. The species is a close relative of Brassica and is capable of limited genetic exchange with the canola species, B. rapa and B. napus. The possible transfer of genes from transgenic canola varieties to Erucastrum gallicum poses a remote, but potential, environmental risk. Populations of Erucastrum gallicum, including both Old World and North American populations, constitute a valuable germplasm resource as potential sources of beneficial agronomic traits, such as disease resistance for canola crop improvement. Key words: Dog mustard, Erucastrum gallicum, weed biology, risk assessment, germplasm, canola

THE BIOLOGY OF CANADIAN BARK-BEETLES: THE SEASONAL HISTORY OF DENDROCTONUS RUFIPENNIS KY. IN NORTHERN ONTARIO

1931 ◽  
Vol 63 (6) ◽  
pp. 126-127
Author(s):  
E. B. Watson
Keyword(s):  
United States ◽  
Bark Beetles ◽  
The United States ◽  
Red Pine ◽  
White Pine ◽  
Northern Ontario ◽  
Dendroctonus Rufipennis ◽  
Forested Areas ◽  
History Of ◽  
Seasonal History

This bark-beetle is locally distributed over the forested areas of Quebec and Ontario, extending westward into Manitoba; in the United States, it has been recorded from Wisconsin and Michigan.The insect has been found breeding in fallen white pine and jack pine, and, within recent years, has also been recorded from red pine.

Control of Japanese stiltgrass (Microstegium vimineum) in golf course natural areas

2020 ◽  
Vol 34 (5) ◽  
pp. 776-778
Author(s):  
Josh R. Weaver ◽  
Philip J. Brown ◽  
Lambert B. McCarty ◽  
Nathaniel Gambrell
Keyword(s):  
United States ◽  
Invasive Species ◽  
The United States ◽  
Microstegium Vimineum ◽  
Golf Course ◽  
Future Research ◽  
Japanese Stiltgrass ◽  
Growing Seasons ◽  
Forested Areas

AbstractJapanese stiltgrass is regarded as one of the most troublesome invasive species in the United States. It is commonly found invading forested areas; however, more recently it has been noted to be invading golf course roughs and out-of-play areas. The purpose of this study was to evaluate POST herbicide control of Japanese stiltgrass in golf course and highly maintained turfgrass facilities. None of the treatments provided >80% Japanese stiltgrass control 2 wk after treatment (WAT). At 4 WAT >80% Japanese stiltgrass control was observed with MSMA, MSMA + metribuzin, amicarbazone, and sethoxydim, whereas metsulfuron, pinoxaden, and imazapic provided minimum control. By 8 WAT, MSMA, MSMA + metribuzin, amicarbazone, and sethoxydim provided >98% control, whereas quinclorac, metsulfuron, pinoxaden, and imazapic provided no visible control. Thiencarbazone-methyl + foramsulfuron + halosulfuron-methyl, and sulfentrazone provided limited (≤60%) control. This study indicates that POST control of Japanese stiltgrass can be achieved with MSMA, MSMA + metribuzin, amicarbazone, and sethoxydim. Future research should include long-term control over multiple growing seasons, repeat applications of herbicides, and evaluation of herbicides in combination for increased and longer-term Japanese stiltgrass control.

Water resource use and management by the United States forest products industry

2009 ◽  
Vol 60 (3) ◽  
pp. 751-760 ◽  
Author(s):  
P. S. Wiegand ◽  
C. A. Flinders ◽  
G. G. Ice ◽  
B. J. Malmberg ◽  
R. P. Fisher
Keyword(s):  
United States ◽  
Water Quality ◽  
Fresh Water ◽  
Best Management Practices ◽  
Management Practices ◽  
Forest Products ◽  
The United States ◽  
Large Scale Disturbance ◽  
Groundwater Yield ◽  
Forested Areas

The connections between forest products operations and water resources in the United States is considered and, where possible, quantified. Manufacture of wood, pulp, and paper products and the influences of forest management and forest products manufacture on water quality are discussed. Most fresh water in the US originates in forested areas. Responsible harvesting strategies, best management practices, and forest re-growth combine to minimize or eliminate changes in water availability and degradation of water quality due to harvesting. Relative to alternative land uses and large-scale disturbance events, forested areas produce the highest quality of fresh water. Water inputs for the manufacture of forest products total about 5.8 billion m3 per year, an amount equal about 0.4% of the surface and groundwater yield from timberland. Approximately 88% of water used in manufacturing is treated and returned directly to surface waters, about 11% is converted to water vapor and released during the manufacturing process, and 1% is imparted to products or solid residuals. Extensive study and continued monitoring of treated effluents suggest few or no concerns regarding the compatibility of current effluents with healthy aquatic systems.

scholarly journals Fire Ants (Solenopsisspp.) and Their Natural Enemies in Southern South America

2012 ◽  
Vol 2012 ◽  
pp. 1-19 ◽  
Author(s):  
Juan Briano ◽  
Luis Calcaterra ◽  
Laura Varone
Keyword(s):  
United States ◽  
Biological Control ◽  
South America ◽  
Natural Enemies ◽  
The United States ◽  
Fire Ants ◽  
Fire Ant ◽  
Biological Information ◽  
Southern South America ◽  
Field Release

We review the fire ant research conducted by the ARS-South American Biological Control Laboratory (SABCL) since 1987 to find a complex of natural enemies in southern South America and evaluate their specificity and suitability for field release as self-sustaining biological control agents. We also include those studies conducted by the ARS-Center for Medical, Agriculture, and Veterinary Entomology in the United States with the SABCL collaboration. Ecological and biological information is reported on local fire ants and their microsporidia, nematodes, viruses, phorid flies, eucharitid wasps, strepsiptera, and parasitic ants. Their biology, abundance, distribution, detrimental effect, field persistence, specificity, and phenology are discussed. We conclude that the objectives of the ARS program in South America are being achieved and that the pioneering studies have served to encourage further investigations in the United States and other countries and advanced the implementation of biological control programs to decrease imported fire ant densities and damage. Still, several promising organisms should be further investigated for eventual field release in the near future.

Correlative microscopy in distrubuted (client/server) computing environments: tools for catalyzing the rapid dissemination of information about the cell biology of the human prostate

1995 ◽  
Vol 53 ◽  
pp. 682-683
Author(s):  
A. Hakam ◽  
J.T. Gau ◽  
M.L. Grove ◽  
B.A. Evans ◽  
M. Shuman ◽  
...  
Keyword(s):  
United States ◽  
Cell Biology ◽  
Tissue Bank ◽  
The United States ◽  
Prostate Adenocarcinoma ◽  
Correlative Microscopy ◽  
Client Server ◽  
Critical Elements ◽  
Transplant Organ

Prostate adenocarcinoma is the most common malignant tumor of men in the United States and is the third leading cause of death in men. Despite attempts at early detection, there will be 244,000 new cases and 44,000 deaths from the disease in the United States in 1995. Therapeutic progress against this disease is hindered by an incomplete understanding of prostate epithelial cell biology, the availability of human tissues for in vitro experimentation, slow dissemination of information between prostate cancer research teams and the increasing pressure to “ stretch” research dollars at the same time staff reductions are occurring.To meet these challenges, we have used the correlative microscopy (CM) and client/server (C/S) computing to increase productivity while decreasing costs. Critical elements of our program are as follows:1) Establishing the Western Pennsylvania Genitourinary (GU) Tissue Bank which includes >100 prostates from patients with prostate adenocarcinoma as well as >20 normal prostates from transplant organ donors.

Digital image acquisition, processing, and analysis in a polymer microscopy laboratory

1994 ◽  
Vol 52 ◽  
pp. 454-455
Author(s):  
Vinod K. Berry ◽  
Xiao Zhang
Keyword(s):  
United States ◽  
Image Analysis ◽  
Digital Image ◽  
Image Acquisition ◽  
Image Transmission ◽  
The United States ◽  
Quantitative Image Analysis ◽  
Quantitative Image

In recent years it became apparent that we needed to improve productivity and efficiency in the Microscopy Laboratories in GE Plastics. It was realized that digital image acquisition, archiving, processing, analysis, and transmission over a network would be the best way to achieve this goal. Also, the capabilities of quantitative image analysis, image transmission etc. available with this approach would help us to increase our efficiency. Although the advantages of digital image acquisition, processing, archiving, etc. have been described and are being practiced in many SEM, laboratories, they have not been generally applied in microscopy laboratories (TEM, Optical, SEM and others) and impact on increased productivity has not been yet exploited as well.In order to attain our objective we have acquired a SEMICAPS imaging workstation for each of the GE Plastic sites in the United States. We have integrated the workstation with the microscopes and their peripherals as shown in Figure 1.

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