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start(February 23, 2012)end(December 31, 1969)
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[author_id] => 19
[author] => lmb843
[authorname] => Lucille Brown
[id] => 150
[title] => Soil Science Seminar Series
[content] => Monday, February 27, 2012
3:30 P.M.
Room 2E25, Agriculture Building
Zinc Speciation of a Smelter Contaminated Canadian Boreal Forest
Soil: Amendment Application Effect on Speciation Using EXAFS, XRF Mapping and µXANES
Jordan Hamilton, MSc Candidate
The Hudson Bay Mining and Smelting Co., Limited (HBMS) has operated a zinc (Zn) and copper (Cu) processing facility in Flin Flon, Manitoba Canada since the 1930’s. Located in the Boreal Shield, the area surrounding the mine complex has been severely impacted by both natural (forest fires) and anthropogenic disturbances, which has adversely affected the natural revegetation of the local forest ecosystem. Zinc is one of the most prevalent smelter-derived metals in the soils and has been identified as a key factor limiting the natural revegetation. Because metal toxicity is related more to speciation than to total concentration EXAFS, XRF mapping and µXANES where used to study Zn speciation in two soils. Zinc speciation was determined before and after amendment application (bone meal biochar, willow biochar, and zeolite) to determine: a) species of Zn contributing to toxicity and elemental associations, b) whether the amendment application influenced Zn speciation reducing overall bio-availability. In soil A (calcium carbonate un-responsive) the bulk EXAFS indicate secondary Zn species (e.g., Zn-LDH, Zn Sorption to Fe (hydr)oxides) were the dominant forms of Zn, and small but distinct changes resulted from amendment application. Soil B (calcium carbonate responsive) contained a much higher percentage of primary Zn (e.g., Franklinite) and was greatly influenced by amendment application towards secondary species. XRF mapping and subsequent µXANES substantiated the bulk EXAFS—providing spatial resolution of Zn in soils A and B. The elemental associations determined though µXANES allowed for the differentiation of individual Zn species, substantiating the standards used in modeling and fitting the bulk EXAFS and XANES
Everyone Welcome
[summary] =>
[postdate] => 2012-02-27 15:30:00
[formatpostdate] => 02/27/12
[startdate] => 2012-02-15 12:41:16
[enddate] =>
[date] => 1330378200
[category] => Soil Science
[link] => http://agbio.usask.ca/index.php?mact=News,cntnt01,detail,0&cntnt01articleid=150&cntnt01origid=52&cntnt01returnid=2645
[titlelink] => Soil Science Seminar Series
[morelink] => More
[printlink] => Print
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[28] => Array
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[author_id] => 19
[author] => lmb843
[authorname] => Lucille Brown
[id] => 151
[title] => M.Sc. Thesis Defence Seminar
[content] => Tuesday, February 28, 2012
1:30 P.M.
Room 2C71, Agriculture Building
Reduced tillage in organic cropping systems on the Canadian prairies
Clare Sullivan, MSc candidate
Organic producers on the Canadian prairies rely heavily on tillage for weed control and soil nutrient management. Intensive tillage degrades soil quality, and therefore efforts to reduce tillage in organic agriculture are growing. Research has focused on replacing tillage for green manure termination with alternative low-disturbance methods, such as the roller-crimper and flail mower.
Green manure termination by rolling, mowing and tillage was compared in three field studies to determine the effect on nutrient availability and crop yield. In Saskatchewan, termination timing and termination method of field pea (Pisum sativum) and faba bean (Vicia faba) green manures in 2009 affected soil properties in the first year, but not in 2010. Wheat (Triticum aestivum) yield in 2010 was equivalent in the rolled and mowed treatments to the tilled treatment, indicating green manure termination without incorporation does not inhibit wheat yield. In Alberta and SK, soil inorganic N and mineralizable N (N0) was measured in the spring following green manure termination in 2010 by tillage, rolling or mowing. Inorganic N was highest in the tilled plots, while N0 varied with residue placement and N content. In Manitoba, the effect of 2 yr of no-tillage or conventional tillage on soil properties and crop uptake were measured in 2010. Overall, tillage regime did not affect N and P availability, microbial biomass, or oat (Avena sativa) uptake.
This research confirms that a reduction in tillage is possible in organic systems on the Canadian prairies, and the extent of reduction varies with management practices.
Everyone Welcome
[summary] =>
[postdate] => 2012-02-28 13:30:00
[formatpostdate] => 02/28/12
[startdate] => 2012-02-17 08:55:09
[enddate] =>
[date] => 1330457400
[category] => Soil Science
[link] => http://agbio.usask.ca/index.php?mact=News,cntnt01,detail,0&cntnt01articleid=151&cntnt01origid=52&cntnt01returnid=2645
[titlelink] => M.Sc. Thesis Defence Seminar
[morelink] => More
[printlink] => Print
)
[1] => stdClass Object
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[author_id] => 11
[author] => gjg533
[authorname] => Gloria Gingera
[id] => 146
[title] => Plant Sciences 990 Seminar Series
[content] => Differentiating Aschochyta Lentis Resistance Genes by Phenotyping Lentil Recombinant Inbred Lines of Resistant by Resistant Crosses
presented by Ph.D candidate
Ehsan Sari
Dept. of Plant Sciences
University of Saskatchewan
***********************************
Biochemical and Molecular Characterization of Two Low Phytate Pea Lines
presented by Ph.D candidate
Arun Shunmugam
Dept. of Plant Sciences
University of Saskatchewan
Tuesday, February 28, 2012
Room 2E25 Agriculture Building
4:00 pm
Everyone Welcome!
[summary] => Differentiating Aschochyta Lentis Resistance Genes by Phenotyping Lentil Recombinant Inbred Lines of Resistant by Resistant Crosses
presented by Ph.D candidate
Ehsan Sari
Dept. of Plant Sciences
University of Saskatchewan
***********************************
Biochemical and Molecular Characterization of Two Low Phytate Pea Lines
presented by Ph.D candidate
Arun Shunmugam
Dept. of Plant Sciences
University of Saskatchewan
Tuesday, February 28, 2012
Room 2E25 Agriculture Building
4:00 pm
Everyone Welcome!
[postdate] => 2012-02-28 16:00:00
[formatpostdate] => 02/28/12
[startdate] => 2012-02-09 15:37:58
[enddate] =>
[date] => 1330466400
[category] => Plant Sciences
[link] => http://agbio.usask.ca/index.php?mact=News,cntnt01,detail,0&cntnt01articleid=146&cntnt01origid=52&cntnt01returnid=2645
[titlelink] => Plant Sciences 990 Seminar Series
[morelink] => More
[printlink] => Print
)
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[3] => Array
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[author_id] => 8
[author] => mlz124
[authorname] => Melissa Zink
[id] => 147
[title] => ANSC M.Sc. Defense Seminar
[content] => M.Sc. Defense Seminar
Khalil Sahtout
"Evaluation of the NRC (2000) beef model for predicting performance and energy requirements of cattle fed under western Canadian environmental conditions"
March 6, 2012, TBA
[summary] => M.Sc. Defense Seminar
Khalil Sahtout
"Evaluation of the NRC (2000) beef model for predicting performance and energy requirements of cattle fed under western Canadian environmental conditions"
March 6, 2012, TBA
[postdate] => 2012-03-06 08:30:26
[formatpostdate] => 03/06/12
[startdate] => 2012-02-13 15:08:26
[enddate] =>
[date] => 1331044226
[category] => Animal and Poultry Science
[link] => http://agbio.usask.ca/index.php?mact=News,cntnt01,detail,0&cntnt01articleid=147&cntnt01origid=52&cntnt01returnid=2645
[titlelink] => ANSC M.Sc. Defense Seminar
[morelink] => More
[printlink] => Print
)
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[4] => Array
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[24] => Array
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[author_id] => 18
[author] => klp152
[authorname] => Kira Paluck
[id] => 128
[title] => Protein Quality Workshop
[content] =>
A 1-day industry focused workshop in the Department of Food and Bioproduct Sciences aimed at improving quality testing of protein ingredients in terms of their functional attributes.
This workshop provides insight into understanding ingredient performance and offers hands-on demonstrations on testing procedures.
April 24, 2012
Department of Food and Bioproduct Sciences
College of Agriculture and Bioresources
University of Saskatchewan
51 Campus Drive, Saskatoon, SK S7N 5A8
For more information and to register, contact:
Dr. Michael Nickerson
Tel: (306) 966-5030
Email: michael.nickerson@usask.ca
Web: michaelnickerson.food.officelive.com
Attendance is free for industry.
Registration for non-industry is $50.
Space is limited.
[summary] =>
A 1-day industry focused workshop in the Department of Food and Bioproduct Sciences aimed at improving quality testing of protein ingredients in terms of their functional attributes.
This workshop provides insight into understanding ingredient performance and offers hands-on demonstrations on testing procedures.
April 24, 2012
Department of Food and Bioproduct Sciences
College of Agriculture and Bioresources
University of Saskatchewan
51 Campus Drive, Saskatoon, SK S7N 5A8
For more information and to register, contact:
Dr. Michael Nickerson
Tel: (306) 966-5030
Email: michael.nickerson@usask.ca
Web: michaelnickerson.food.officelive.com
Attendance is free for industry.
Registration for non-industry is $50.
Space is limited.
[postdate] => 2012-04-24 09:00:50
[formatpostdate] => 04/24/12
[startdate] => 2012-01-10 14:51:50
[enddate] =>
[date] => 1335279650
[category] => Food Bioproduct Sciences
[link] => http://agbio.usask.ca/index.php?mact=News,cntnt01,detail,0&cntnt01articleid=128&cntnt01origid=52&cntnt01returnid=2645
[titlelink] => Protein Quality Workshop
[morelink] => More
[printlink] => Print
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